revenues generated by our other professionals , or full-time equivalents , are largely dependent on the number of consultants we employ , their hours worked and billing rates charged , as well as the number of pages reviewed and amount of data processed in the case of our document review and electronic data discovery groups , respectively . we generate the majority of our revenues from providing professional services under three types of billing arrangements : time-and-expense , fixed-fee , and performance-based . time-and-expense billing arrangements require the client to pay based on either the number of hours worked , the number of pages reviewed , or the amount of data processed by our revenue-generating professionals at agreed upon rates . we recognize revenues under time-and-expense billing arrangements as the related services are rendered . time-and-expense engagements represented 44.2 % , 45.9 % and 42.3 % of our revenues in 2011 , 2010 and 2009 , respectively . in fixed-fee billing arrangements , we agree to a pre-established fee in exchange for a predetermined set of professional services . we set the fees based on our estimates of the costs and timing for completing the engagements . it is the client 's expectation in these engagements that the pre-established fee will not be exceeded except in mutually agreed upon circumstances . we recognize revenues under fixed-fee billing arrangements using a proportionate 23 performance approach , which is based on work completed to-date versus our estimates of the total services to be provided under the engagement . for the years ended december 31 , 2011 , 2010 and 2009 , fixed-fee engagements represented approximately 35.4 % , 40.3 % and 39.4 % , respectively , of our revenues . in performance-based fee billing arrangements , fees are tied to the attainment of contractually defined objectives . we enter into performance-based engagements in essentially two forms . first , we generally earn fees that are directly related to the savings formally acknowledged by the client as a result of adopting our recommendations for improving operational and cost effectiveness in the areas we review . second , we have performance-based engagements in which we earn a success fee when and if certain predefined outcomes occur . often , performance-based fees supplement our time-and-expense or fixed-fee engagements . we do not recognize revenues under performance-based billing arrangements until all related performance criteria are met . performance-based fee revenues represented 17.6 % , 11.6 % and 16.5 % of our revenues in 2011 , 2010 and 2009 , respectively . performance-based fee engagements may cause significant variations in revenues and operating results depending on the timing of achieving the performance-based criteria . we also generate revenues from licensing two types of proprietary software to clients . license revenue from our research administration and compliance software is recognized in accordance with fasb asc topic 985-605 , generally in the month in which the software is delivered . license revenue from our revenue cycle management software is sold only as a component of our consulting projects , and the services we provide are essential to the functionality of the software . therefore , revenues from these software licenses are recognized over the term of the related consulting services contract in accordance with fasb asc topic 605-35. clients that have purchased one of our software licenses can pay an annual fee for software support and maintenance . annual support and maintenance fee revenue is recognized ratably over the support period , which is generally one year . these fees are billed in advance and included in deferred revenues until recognized . support and maintenance revenues represented 2.8 % , 2.2 % and 1.8 % of our revenues in 2011 , 2010 and 2009 , respectively . our quarterly results are impacted principally by our full-time consultants ' utilization rate , the number of business days in each quarter , the number of our revenue-generating professionals who are available to work and the amount of performance-based fees recognized which often vary significantly between quarters . our utilization rate can be negatively affected by increased hiring because there is generally a transition period for new professionals that results in a temporary drop in our utilization rate . our utilization rate can also be affected by seasonal variations in the demand for our services from our clients . for example , during the third and fourth quarters of the year , vacations taken by our clients can result in the deferral of activity on existing and new engagements , which would negatively affect our utilization rate . the number of business work days is also affected by the number of vacation days taken by our consultants and holidays in each quarter . we typically have fewer business work days available in the fourth quarter of the year , which can impact revenues during that period . time-and-expense engagements do not provide us with a high degree of predictability as to performance in future periods . unexpected changes in the demand for our services can result in significant variations in utilization and revenues and present a challenge to optimal hiring and staffing . moreover , our clients typically retain us on an engagement-by-engagement basis , rather than under long-term recurring contracts . the volume of work performed for any particular client can vary widely from period to period . reimbursable expenses reimbursable expenses that are billed to clients , primarily relating to travel and out-of-pocket expenses incurred in connection with engagements , are included in total revenues and reimbursable expenses , and typically an equivalent amount of these expenses are included in total direct costs and reimbursable expenses . reimbursable expenses also include those subcontractors who are billed to our clients at cost . we manage our business on the basis of revenues before reimbursable expenses . story_separator_special_tag ( 6 ) consists of consultants who work variable schedules as needed by our clients , as well as contract reviewers and other professionals who generate revenues primarily based on number of hours worked and units produced , such as pages reviewed and data processed . also includes full-time employees who provide software support and maintenance services to our clients . see note 4 discontinued operations under part iiitem 8. financial statements and supplementary data for additional information . non-gaap measures we also assess our results of operations using certain non-gaap financial measures . these non-gaap financial measures differ from gaap because the non-gaap financial measures we calculate to measure adjusted ebitda , adjusted 30 net income from continuing operations and adjusted diluted earnings per share exclude a number of items required by gaap , each discussed below . these non-gaap financial measures should be considered in addition to , and not as a substitute for or superior to , any measure of performance , cash flows or liquidity prepared in accordance with gaap . our non-gaap financial measures may be defined differently from time to time and may be defined differently than similar terms used by other companies , and accordingly , care should be exercised in understanding how we define our non-gaap financial measures . our management uses the non-gaap financial measures to gain an understanding of our comparative operating performance , for example when comparing such results with previous periods or forecasts . these non-gaap financial measures are used by management in their financial and operating decision-making because management believes they reflect our ongoing business in a manner that allows for meaningful period-to-period comparisons . management also uses these non-gaap financial measures when publicly providing our business outlook , for internal management purposes , and as a basis for evaluating potential acquisitions and dispositions . we believe that these non-gaap financial measures provide useful information to investors and others ( a ) in understanding and evaluating huron 's current operating performance and future prospects in the same manner as management does , ( b ) in comparing in a consistent manner huron 's current financial results with huron 's past financial results and ( c ) in understanding the company 's ability to generate cash flows from operations that are available for taxes , capital expenditures , and debt repayment . the reconciliations of these non-gaap financial measures from gaap to non-gaap are as follows : replace_table_token_6_th 31 replace_table_token_7_th these non-gaap financial measures include adjustments for the following items : non-cash compensation : as discussed in note 3 restatement of previously-issued financial statements under part iiitem 8. financial statements and supplementary data ,  we recorded non-cash compensation expense related to shareholder payments and employee payments in conjunction with certain acquisitions . we have excluded the effect of the non-cash compensation expense from our non-gaap measures because these items are non-cash and non-recurring in nature . restatement related expenses : we have incurred significant expenses related to our financial statement restatement . we have excluded the effect of these restatement related expenses from our non-gaap measures due to the non-recurring nature of the underlying event as a means to provide comparability with periods that were not impacted by the restatement related expenses . restructuring charges : we have incurred charges due to the restructuring of various parts of our business . these restructuring charges have primarily consisted of severance charges , costs associated with office space reductions including the accelerated depreciation of certain leasehold improvements , and the write-off of impaired intangible assets . we have excluded the effect of the restructuring charges from our non-gaap measures as a means to provide comparability with periods that were not impacted by a restructuring charge . additionally , the amount of each restructuring charge is significantly affected by the timing and size of the restructured business or component of a business . litigation settlements , net and goodwill impairment charges : we have excluded the effects of the litigation settlement expense in 2011 and 2010 and goodwill impairment charges in 2011 and 2009 from our non-gaap measures because their exclusion permits comparability with periods that were not impacted by these charges . other gain : we recorded a gain in 2009 related to a release of certain employees from their non-solicitation agreements with the company and a settlement of certain other contractual obligations . we have excluded the effect of the other gain from our non-gaap measures due to the fact that it is unusual and infrequent in nature as a means to provide comparability with the periods that were not impacted by the other gain . 32 amortization of intangible assets : we have excluded the effect of amortization of intangible assets from the non-gaap measures presented above . amortization of intangibles is inconsistent in its amount and frequency and is significantly affected by the timing and size of our acquisitions . tax effect : the non-gaap income tax adjustment reflects the incremental tax rate applicable to the non-gaap adjustments . income tax expense , interest and other expenses , depreciation and amortization : we have excluded the effects of income tax expense , interest and other expenses , and depreciation and amortization in the calculation of ebitda as these are customary exclusions as defined by the calculation of ebitda to arrive at meaningful earnings from core operations excluding the effect of such items . year ended december 31 , 2011 compared to year ended december 31 , 2010 revenues revenues increased $ 90.6 million , or 17.6 % , to $ 606.3 million for the year ended december 31 , 2011 from $ 515.7 million for the year ended december 31 , 2010. of the overall $ 90.6 million increase in revenues , $ 67.4 million was attributable to our full-time consultants , while $ 23.2 million was attributable to our full-time equivalents . the $ 67.4 million increase in full-time billable consultant revenues was attributable to

liquidity and capital resources cash and cash equivalents decreased $ 1.2 million , from $ 6.3 million at december 31 , 2010 , to $ 5.1 million at december 31 , 2011. cash and cash equivalents decreased $ 0.2 million , from $ 6.5 million at december 31 , 2009 , to $ 6.3 million at december 31 , 2010. cash and cash equivalents included $ 0.1 million and $ 0.7 million of cash related to discontinued operations as of december 31 , 2010 and 2009 , respectively . our primary sources of liquidity are cash flows from operations and debt capacity available under our credit facility . 41 operating activities cash flows provided by operating activities totaled $ 108.6 million , $ 50.1 million and $ 113.9 million for the years ended december 31 , 2011 , 2010 and 2009 , respectively . our operating assets and liabilities consist primarily of receivables from clients and unbilled services , accounts payable and accrued expenses , and accrued payroll and related benefits . the volume of services rendered and the related billings and timing of collections on those billings , as well as payments of our accounts payable affect these account balances . the increase in cash provided by operations in 2011 when compared with 2010 was primarily attributable to higher revenues partially offset by increases in direct costs and selling , general and administrative costs in combination with an increase in the accrued payroll and related benefits liability . the increase in the accrued payroll and related benefits liability is the result of lower bonus payments in 2011 for the 2010 performance year compared to the amount accrued in 2011 that will not be paid out until 2012. the decrease in cash flow from operations in 2010 was attributable to the increased payment of 2009 performance-based bonuses during the first quarter of 2010 as compared to the same period in 2009 coupled with an increase in accounts payable payments in 2010 compared to 2009 , primarily related to the timing of when payments were made .


 Write a concise suspicious activity report of the following text delimited by triple backquotes. Return your response as a formal report which covers the key points highlighting the location,dates,entity names and account holder information in chronological order of the text.
     ```liquidity and capital resources cash and cash equivalents decreased $ 1.2 million , from $ 6.3 million at december 31 , 2010 , to $ 5.1 million at december 31 , 2011. cash and cash equivalents decreased $ 0.2 million , from $ 6.5 million at december 31 , 2009 , to $ 6.3 million at december 31 , 2010. cash and cash equivalents included $ 0.1 million and $ 0.7 million of cash related to discontinued operations as of december 31 , 2010 and 2009 , respectively . our primary sources of liquidity are cash flows from operations and debt capacity available under our credit facility . 41 operating activities cash flows provided by operating activities totaled $ 108.6 million , $ 50.1 million and $ 113.9 million for the years ended december 31 , 2011 , 2010 and 2009 , respectively . our operating assets and liabilities consist primarily of receivables from clients and unbilled services , accounts payable and accrued expenses , and accrued payroll and related benefits . the volume of services rendered and the related billings and timing of collections on those billings , as well as payments of our accounts payable affect these account balances . the increase in cash provided by operations in 2011 when compared with 2010 was primarily attributable to higher revenues partially offset by increases in direct costs and selling , general and administrative costs in combination with an increase in the accrued payroll and related benefits liability . the increase in the accrued payroll and related benefits liability is the result of lower bonus payments in 2011 for the 2010 performance year compared to the amount accrued in 2011 that will not be paid out until 2012. the decrease in cash flow from operations in 2010 was attributable to the increased payment of 2009 performance-based bonuses during the first quarter of 2010 as compared to the same period in 2009 coupled with an increase in accounts payable payments in 2010 compared to 2009 , primarily related to the timing of when payments were made .
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 Suspicious Activity Report : revenues generated by our other professionals , or full-time equivalents , are largely dependent on the number of consultants we employ , their hours worked and billing rates charged , as well as the number of pages reviewed and amount of data processed in the case of our document review and electronic data discovery groups , respectively . we generate the majority of our revenues from providing professional services under three types of billing arrangements : time-and-expense , fixed-fee , and performance-based . time-and-expense billing arrangements require the client to pay based on either the number of hours worked , the number of pages reviewed , or the amount of data processed by our revenue-generating professionals at agreed upon rates . we recognize revenues under time-and-expense billing arrangements as the related services are rendered . time-and-expense engagements represented 44.2 % , 45.9 % and 42.3 % of our revenues in 2011 , 2010 and 2009 , respectively . in fixed-fee billing arrangements , we agree to a pre-established fee in exchange for a predetermined set of professional services . we set the fees based on our estimates of the costs and timing for completing the engagements . it is the client 's expectation in these engagements that the pre-established fee will not be exceeded except in mutually agreed upon circumstances . we recognize revenues under fixed-fee billing arrangements using a proportionate 23 performance approach , which is based on work completed to-date versus our estimates of the total services to be provided under the engagement . for the years ended december 31 , 2011 , 2010 and 2009 , fixed-fee engagements represented approximately 35.4 % , 40.3 % and 39.4 % , respectively , of our revenues . in performance-based fee billing arrangements , fees are tied to the attainment of contractually defined objectives . we enter into performance-based engagements in essentially two forms . first , we generally earn fees that are directly related to the savings formally acknowledged by the client as a result of adopting our recommendations for improving operational and cost effectiveness in the areas we review . second , we have performance-based engagements in which we earn a success fee when and if certain predefined outcomes occur . often , performance-based fees supplement our time-and-expense or fixed-fee engagements . we do not recognize revenues under performance-based billing arrangements until all related performance criteria are met . performance-based fee revenues represented 17.6 % , 11.6 % and 16.5 % of our revenues in 2011 , 2010 and 2009 , respectively . performance-based fee engagements may cause significant variations in revenues and operating results depending on the timing of achieving the performance-based criteria . we also generate revenues from licensing two types of proprietary software to clients . license revenue from our research administration and compliance software is recognized in accordance with fasb asc topic 985-605 , generally in the month in which the software is delivered . license revenue from our revenue cycle management software is sold only as a component of our consulting projects , and the services we provide are essential to the functionality of the software . therefore , revenues from these software licenses are recognized over the term of the related consulting services contract in accordance with fasb asc topic 605-35. clients that have purchased one of our software licenses can pay an annual fee for software support and maintenance . annual support and maintenance fee revenue is recognized ratably over the support period , which is generally one year . these fees are billed in advance and included in deferred revenues until recognized . support and maintenance revenues represented 2.8 % , 2.2 % and 1.8 % of our revenues in 2011 , 2010 and 2009 , respectively . our quarterly results are impacted principally by our full-time consultants ' utilization rate , the number of business days in each quarter , the number of our revenue-generating professionals who are available to work and the amount of performance-based fees recognized which often vary significantly between quarters . our utilization rate can be negatively affected by increased hiring because there is generally a transition period for new professionals that results in a temporary drop in our utilization rate . our utilization rate can also be affected by seasonal variations in the demand for our services from our clients . for example , during the third and fourth quarters of the year , vacations taken by our clients can result in the deferral of activity on existing and new engagements , which would negatively affect our utilization rate . the number of business work days is also affected by the number of vacation days taken by our consultants and holidays in each quarter . we typically have fewer business work days available in the fourth quarter of the year , which can impact revenues during that period . time-and-expense engagements do not provide us with a high degree of predictability as to performance in future periods . unexpected changes in the demand for our services can result in significant variations in utilization and revenues and present a challenge to optimal hiring and staffing . moreover , our clients typically retain us on an engagement-by-engagement basis , rather than under long-term recurring contracts . the volume of work performed for any particular client can vary widely from period to period . reimbursable expenses reimbursable expenses that are billed to clients , primarily relating to travel and out-of-pocket expenses incurred in connection with engagements , are included in total revenues and reimbursable expenses , and typically an equivalent amount of these expenses are included in total direct costs and reimbursable expenses . reimbursable expenses also include those subcontractors who are billed to our clients at cost . we manage our business on the basis of revenues before reimbursable expenses . story_separator_special_tag ( 6 ) consists of consultants who work variable schedules as needed by our clients , as well as contract reviewers and other professionals who generate revenues primarily based on number of hours worked and units produced , such as pages reviewed and data processed . also includes full-time employees who provide software support and maintenance services to our clients . see note 4 discontinued operations under part iiitem 8. financial statements and supplementary data for additional information . non-gaap measures we also assess our results of operations using certain non-gaap financial measures . these non-gaap financial measures differ from gaap because the non-gaap financial measures we calculate to measure adjusted ebitda , adjusted 30 net income from continuing operations and adjusted diluted earnings per share exclude a number of items required by gaap , each discussed below . these non-gaap financial measures should be considered in addition to , and not as a substitute for or superior to , any measure of performance , cash flows or liquidity prepared in accordance with gaap . our non-gaap financial measures may be defined differently from time to time and may be defined differently than similar terms used by other companies , and accordingly , care should be exercised in understanding how we define our non-gaap financial measures . our management uses the non-gaap financial measures to gain an understanding of our comparative operating performance , for example when comparing such results with previous periods or forecasts . these non-gaap financial measures are used by management in their financial and operating decision-making because management believes they reflect our ongoing business in a manner that allows for meaningful period-to-period comparisons . management also uses these non-gaap financial measures when publicly providing our business outlook , for internal management purposes , and as a basis for evaluating potential acquisitions and dispositions . we believe that these non-gaap financial measures provide useful information to investors and others ( a ) in understanding and evaluating huron 's current operating performance and future prospects in the same manner as management does , ( b ) in comparing in a consistent manner huron 's current financial results with huron 's past financial results and ( c ) in understanding the company 's ability to generate cash flows from operations that are available for taxes , capital expenditures , and debt repayment . the reconciliations of these non-gaap financial measures from gaap to non-gaap are as follows : replace_table_token_6_th 31 replace_table_token_7_th these non-gaap financial measures include adjustments for the following items : non-cash compensation : as discussed in note 3 restatement of previously-issued financial statements under part iiitem 8. financial statements and supplementary data ,  we recorded non-cash compensation expense related to shareholder payments and employee payments in conjunction with certain acquisitions . we have excluded the effect of the non-cash compensation expense from our non-gaap measures because these items are non-cash and non-recurring in nature . restatement related expenses : we have incurred significant expenses related to our financial statement restatement . we have excluded the effect of these restatement related expenses from our non-gaap measures due to the non-recurring nature of the underlying event as a means to provide comparability with periods that were not impacted by the restatement related expenses . restructuring charges : we have incurred charges due to the restructuring of various parts of our business . these restructuring charges have primarily consisted of severance charges , costs associated with office space reductions including the accelerated depreciation of certain leasehold improvements , and the write-off of impaired intangible assets . we have excluded the effect of the restructuring charges from our non-gaap measures as a means to provide comparability with periods that were not impacted by a restructuring charge . additionally , the amount of each restructuring charge is significantly affected by the timing and size of the restructured business or component of a business . litigation settlements , net and goodwill impairment charges : we have excluded the effects of the litigation settlement expense in 2011 and 2010 and goodwill impairment charges in 2011 and 2009 from our non-gaap measures because their exclusion permits comparability with periods that were not impacted by these charges . other gain : we recorded a gain in 2009 related to a release of certain employees from their non-solicitation agreements with the company and a settlement of certain other contractual obligations . we have excluded the effect of the other gain from our non-gaap measures due to the fact that it is unusual and infrequent in nature as a means to provide comparability with the periods that were not impacted by the other gain . 32 amortization of intangible assets : we have excluded the effect of amortization of intangible assets from the non-gaap measures presented above . amortization of intangibles is inconsistent in its amount and frequency and is significantly affected by the timing and size of our acquisitions . tax effect : the non-gaap income tax adjustment reflects the incremental tax rate applicable to the non-gaap adjustments . income tax expense , interest and other expenses , depreciation and amortization : we have excluded the effects of income tax expense , interest and other expenses , and depreciation and amortization in the calculation of ebitda as these are customary exclusions as defined by the calculation of ebitda to arrive at meaningful earnings from core operations excluding the effect of such items . year ended december 31 , 2011 compared to year ended december 31 , 2010 revenues revenues increased $ 90.6 million , or 17.6 % , to $ 606.3 million for the year ended december 31 , 2011 from $ 515.7 million for the year ended december 31 , 2010. of the overall $ 90.6 million increase in revenues , $ 67.4 million was attributable to our full-time consultants , while $ 23.2 million was attributable to our full-time equivalents . the $ 67.4 million increase in full-time billable consultant revenues was attributable to

