this provision for ibnr is based on an actuarial estimate provided by our independent actuary . we believe our operational policies and internal claims reporting system help to limit the amount of incurred but unreported claims . beginning in the first quarter of 2015 , we began offering healthcare coverage to eligible staffing employees in compliance with the employer mandate provision of the patient protection and affordable care act and the health care and education reconciliation act of 2010 ( collectively , the acts ) . the acts represent comprehensive u.s. healthcare reform legislation . in addition to other provisions , the acts subject us to potential penalties unless we offer to our employees minimum essential healthcare coverage that is affordable . while it is still early in the adoption phase of the acts ' employer mandate provision , initial price increases included in our contracts with clients appear to be sufficient to cover implementation and operating costs of offering healthcare coverage to staffing employees , but there can be no assurance that will continue to be the case . selling , general and administrative expenses represent both branch office and corporate-level operating expenses . branch operating expenses consist primarily of branch office staff payroll and personnel related costs , advertising , rent , office supplies , professional and legal fees and branch incentive compensation . corporate-level operating expenses consist primarily of executive and office staff payroll and personnel related costs , professional and legal fees , travel , occupancy costs , information systems costs , and executive and corporate staff incentive compensation . - 35 - depreciation and amortization represent depreciation of property and equipment and amortization of intangible assets consisting of the amortization of software costs , covenants not to compete , and if material , customer related intangibles . property and equipment are depreciated using the straight-line method over their estimated useful lives , which range from one to 39 years . intangible assets are amortized using the straight-line method over their estimated useful lives , which generally range from two to 15 years . critical accounting policies we have identified the following policies as critical to our business and the understanding of our results of operations . for a detailed discussion of the application of these and other accounting policies , see note 1 in the notes to the consolidated financial statements incorporated into item 8 of part ii of this report . the preparation of this annual report on form 10-k requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities at the date of the financial statements , and the reported amounts of revenue and expenses during the reporting period . management bases its estimates on historical experience and on various other assumptions that are believed to be reasonable under the circumstances , the results of which form the basis for making judgments about the carrying values of assets and liabilities that are not readily apparent from other sources . actual results may differ from these estimates under different assumptions or conditions . revenue recognition . we recognize peo service and staffing service revenue as services are rendered by our workforce . peo services are normally used by organizations to satisfy ongoing needs related to the management of human capital and are governed by the terms of a client services agreement which covers all employees at a particular work site . our client services agreements have a minimum term of one year , are renewable on an annual basis and typically require 30 days ' written notice to cancel or terminate the contract by either party . in addition , our client services agreements provide for immediate termination upon any default of the client regardless of when notice is given . we report peo revenues on a net basis because we are not the primary obligor for the services provided by our clients to their customers pursuant to our client services agreements . we reduce these service fee revenues by the amounts invoiced to our clients for direct payroll expenses such as salaries , wages , health insurance , employee out-of-pocket expenses incurred incidental to employment and safety incentives . safety incentives represent cash incentives paid to certain client companies for maintaining safe-work practices and minimizing workplace injuries . the safety incentive is based on a percentage of annual payroll and is paid annually to clients who meet predetermined workers ' compensation claims cost objectives . workers ' compensation reserves . we are self-insured for workers ' compensation coverage in a majority of our employee work sites in oregon , maryland , delaware and colorado and for staffing services and management employees only in washington . we were self-insured in california through december 31 , 2014. we now maintain individual policies for all california-based clients , along with clients in delaware , virginia , pennsylvania and the district of columbia , through our fronted insurance arrangement with ace . our employees working in arizona , utah and nevada are eligible for coverage through ecole , our wholly owned insurance company . - 36 - the estimated liability for unsettled workers ' compensation claims represents our best estimate , utilizing actuarial expertise and projection techniques , at a given reporting date . our estimate is based on an evaluation of information provided by our internal claims adjusters and tpa , coupled with management 's use of an independent actuary to provide an actuarial estimate of future ibnr costs . these elements serve as the basis for our overall estimate for workers ' compensation claims liabilities , which include more specifically the following components : case reserve estimates for reported losses , plus additional amounts for estimated future adverse cost development of ibnr , legal costs and mcc expenses , as well as estimates for unallocated loss adjustment expenses . story_separator_special_tag during 2015 , the company served approximately 4,195 peo clients , compared to approximately 3,665 peo clients during 2014. during 2015 , the company served approximately 1,770 staffing services customers , compared to 1,825 during 2014. gross margin for 2015 totaled approximately $ 129.5 million or 17.5 % of revenue compared to $ 33.4 million or 5.2 % of revenue for 2014. the 12.3 % increase in gross margin percentage was primarily due to decreases in workers ' compensation expense and direct payroll costs , partially offset by a slight increase in payroll taxes and benefits . workers ' compensation expense , in terms of dollars and as a percentage of revenues , decreased from $ 213.5 million or 33.5 % in 2014 to $ 171.1 million or 23.1 % in 2015. the increase was primarily driven by the company 's large worker 's compensation expense change of $ 84.7 million taken in the second quarter of 2014 ( as restated ) . in 2014 after extensive analysis , management concluded that a significant increase of workers ' compensation liability was needed , primarily to reflect the potential adverse development of prior period claims . management 's primary considerations in determining to record a large increase in the company 's estimate of workers ' compensation liability in 2014 included the large increase in the company 's business in recent years , the potential for large future adverse development of open claims , and the increasing complexity and uncertainty surrounding healthcare costs . in 2015 as the actuarial data began to stabilize we did not see the significant adverse development on prior years ' claims as seen in 2014. the company recorded $ 255.7 million and $ 225.3 million at december 31 , 2015 and 2014 , respectively , as an estimated future liability for unsettled workers ' compensation claims liabilities . the estimated liabilities for unsettled workers ' compensation claims represent management 's best estimate based upon an actuarial valuation provided by a third party actuary at december 31 , 2015 and 2014. included in the estimate for workers ' compensation claims liabilities are case reserve estimates for reported losses , plus additional amounts for estimated future adverse cost development of ibnr claims , legal costs , mcc expenses , and unallocated loss adjustment expenses , including future administrative fees to be paid to third party service providers . these estimates are reviewed at least quarterly and adjustments to estimated liabilities are reflected in current operating results as they become known . management believes it has improved the company 's procedures in many areas of its workers ' compensation program over the past three years . see note 6 to the consolidated financial statements incorporated into item 8 of part ii of this report . we believe these efforts have improved management 's ability to estimate workers ' compensation expense . - 43 - direct payroll costs as a percentage of revenues decreased to 17.3 % for 2015 from 19.9 % for 2014 , primarily due to the increase in our mix of professional employer services in the company 's customer base compared to 2014. payroll taxes and benefits as a percentage of revenues for 2015 was 42.1 % compared to 41.4 % for 2014. the percentage rate increase was primarily due to the effect of growth in professional employer services , where payroll taxes and benefits are presented at gross cost , whereas the related direct payroll costs are netted against professional employer services revenue . the effect of the growth in professional employer services on payroll taxes and benefits was partially offset by a decline in the overall state unemployment tax rates where the company does business . selling , general and administrative ( sg & a ) expenses consist of compensation and other expenses relating to the operation of our headquarters and our branch offices and the marketing of our services . sg & a expenses for 2015 amounted to approximately $ 90.2 million , an increase of $ 16.1 million or 21.8 % over 2014. the increase was primarily attributable to an increase in management payroll , incentive bonus pay to field personnel , legal fees , and other variable expense components within sg & a to support our business growth . sg & a expenses as a percentage of revenues increased from 11.6 % in 2014 to 12.2 % in 2015. other expense for 2015 totaled approximately $ 1.3 million as compared to other income of $ 522,000 for 2014 due to an increase in interest expense of $ 1.8 million resulting from the company 's $ 40.0 million term loan entered into on december 29 , 2014. our effective income tax rate for 2015 was 27.5 % , compared to ( 40.1 ) % for 2014. our income tax rate typically differs from the federal statutory tax rate of 35 % primarily due to federal and state tax credits . see note 10 to the consolidated financial statements incorporated into item 8 of part ii of this report for additional information regarding income taxes . years ended december 31 , 2014 and 2013 net loss for 2014 ( as restated ) was $ 25.5 million compared to net income of $ 15.7 million for 2013. the net loss in 2014 was primarily due to the large increase in workers ' compensation expense . diluted loss per share for 2014 was $ 3.57 compared to a diluted earnings per share of $ 2.12 for 2013. revenues for 2014 of $ 636.4 million reflect an increase in the company 's professional employer service fee revenue of $ 77.4 million or 19.7 % , coupled with an increase in staffing services revenue of $ 22.0 million or 15.3 % . approximately 77 % and 74 % , respectively , of our total net revenues during 2014 and 2013 was attributable to our california operations . our growth in professional employer service revenues was attributable to both new

liquidity and capital resources the company 's cash position of $ 25.2 million at december 31 , 2015 increased $ 13.7 million compared to december 31 , 2014. the increase in cash at december 31 , 2015 , as compared to december 31 , 2014 , was primarily due to net income of $ 25.5 million , proceeds from sales and maturities of securities of $ 291.7 million and an increase in workers ' compensation claims liabilities of $ 30.4 million , partially offset by purchases of securities of $ 344.3 million and payments of long-term debt of $ 25.2 million . net cash provided by operating activities for 2015 amounted to $ 100.6 million , compared to $ 69.6 million for 2014. for 2015 , cash flow was primarily provided by net income of $ 25.5 million , an increase in workers ' compensation claims liabilities of $ 30.4 million and safety incentive liability of $ 7.0 million , and a decrease in trade accounts receivable of $ 12.1 million and income taxes receivable of $ 10.5 million . net cash used in investing activities totaled $ 55.6 million for 2015 , compared to $ 182.5 million for 2014. for 2015 cash used in investing activities consisted primarily of purchases of restricted marketable securities of $ 211.7 million , restricted certificates of deposit of $ 124.3 million and marketable securities of $ 8.2 million , partially offset by proceeds from sales and maturities of restricted certificates of deposit of $ 228.7 million , marketable securities of $ 53.0 million and restricted marketable securities of $ 10.0 million . the company presently has no material long-term capital commitments . to monitor our overall investment risk and to assess the fair values of assets within our investment portfolio , we review our investment portfolio on a quarterly basis for significant unrealized gains or losses . we define significant to be in excess of 5 % of cost basis . when we identify significant unrealized gains or losses , we inquire as to the reasons with our investment advisors .


 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 the company 's cash position of $ 25.2 million at december 31 , 2015 increased $ 13.7 million compared to december 31 , 2014. the increase in cash at december 31 , 2015 , as compared to december 31 , 2014 , was primarily due to net income of $ 25.5 million , proceeds from sales and maturities of securities of $ 291.7 million and an increase in workers ' compensation claims liabilities of $ 30.4 million , partially offset by purchases of securities of $ 344.3 million and payments of long-term debt of $ 25.2 million . net cash provided by operating activities for 2015 amounted to $ 100.6 million , compared to $ 69.6 million for 2014. for 2015 , cash flow was primarily provided by net income of $ 25.5 million , an increase in workers ' compensation claims liabilities of $ 30.4 million and safety incentive liability of $ 7.0 million , and a decrease in trade accounts receivable of $ 12.1 million and income taxes receivable of $ 10.5 million . net cash used in investing activities totaled $ 55.6 million for 2015 , compared to $ 182.5 million for 2014. for 2015 cash used in investing activities consisted primarily of purchases of restricted marketable securities of $ 211.7 million , restricted certificates of deposit of $ 124.3 million and marketable securities of $ 8.2 million , partially offset by proceeds from sales and maturities of restricted certificates of deposit of $ 228.7 million , marketable securities of $ 53.0 million and restricted marketable securities of $ 10.0 million . the company presently has no material long-term capital commitments . to monitor our overall investment risk and to assess the fair values of assets within our investment portfolio , we review our investment portfolio on a quarterly basis for significant unrealized gains or losses . we define significant to be in excess of 5 % of cost basis . when we identify significant unrealized gains or losses , we inquire as to the reasons with our investment advisors .
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 Suspicious Activity Report : this provision for ibnr is based on an actuarial estimate provided by our independent actuary . we believe our operational policies and internal claims reporting system help to limit the amount of incurred but unreported claims . beginning in the first quarter of 2015 , we began offering healthcare coverage to eligible staffing employees in compliance with the employer mandate provision of the patient protection and affordable care act and the health care and education reconciliation act of 2010 ( collectively , the acts ) . the acts represent comprehensive u.s. healthcare reform legislation . in addition to other provisions , the acts subject us to potential penalties unless we offer to our employees minimum essential healthcare coverage that is affordable . while it is still early in the adoption phase of the acts ' employer mandate provision , initial price increases included in our contracts with clients appear to be sufficient to cover implementation and operating costs of offering healthcare coverage to staffing employees , but there can be no assurance that will continue to be the case . selling , general and administrative expenses represent both branch office and corporate-level operating expenses . branch operating expenses consist primarily of branch office staff payroll and personnel related costs , advertising , rent , office supplies , professional and legal fees and branch incentive compensation . corporate-level operating expenses consist primarily of executive and office staff payroll and personnel related costs , professional and legal fees , travel , occupancy costs , information systems costs , and executive and corporate staff incentive compensation . - 35 - depreciation and amortization represent depreciation of property and equipment and amortization of intangible assets consisting of the amortization of software costs , covenants not to compete , and if material , customer related intangibles . property and equipment are depreciated using the straight-line method over their estimated useful lives , which range from one to 39 years . intangible assets are amortized using the straight-line method over their estimated useful lives , which generally range from two to 15 years . critical accounting policies we have identified the following policies as critical to our business and the understanding of our results of operations . for a detailed discussion of the application of these and other accounting policies , see note 1 in the notes to the consolidated financial statements incorporated into item 8 of part ii of this report . the preparation of this annual report on form 10-k requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities at the date of the financial statements , and the reported amounts of revenue and expenses during the reporting period . management bases its estimates on historical experience and on various other assumptions that are believed to be reasonable under the circumstances , the results of which form the basis for making judgments about the carrying values of assets and liabilities that are not readily apparent from other sources . actual results may differ from these estimates under different assumptions or conditions . revenue recognition . we recognize peo service and staffing service revenue as services are rendered by our workforce . peo services are normally used by organizations to satisfy ongoing needs related to the management of human capital and are governed by the terms of a client services agreement which covers all employees at a particular work site . our client services agreements have a minimum term of one year , are renewable on an annual basis and typically require 30 days ' written notice to cancel or terminate the contract by either party . in addition , our client services agreements provide for immediate termination upon any default of the client regardless of when notice is given . we report peo revenues on a net basis because we are not the primary obligor for the services provided by our clients to their customers pursuant to our client services agreements . we reduce these service fee revenues by the amounts invoiced to our clients for direct payroll expenses such as salaries , wages , health insurance , employee out-of-pocket expenses incurred incidental to employment and safety incentives . safety incentives represent cash incentives paid to certain client companies for maintaining safe-work practices and minimizing workplace injuries . the safety incentive is based on a percentage of annual payroll and is paid annually to clients who meet predetermined workers ' compensation claims cost objectives . workers ' compensation reserves . we are self-insured for workers ' compensation coverage in a majority of our employee work sites in oregon , maryland , delaware and colorado and for staffing services and management employees only in washington . we were self-insured in california through december 31 , 2014. we now maintain individual policies for all california-based clients , along with clients in delaware , virginia , pennsylvania and the district of columbia , through our fronted insurance arrangement with ace . our employees working in arizona , utah and nevada are eligible for coverage through ecole , our wholly owned insurance company . - 36 - the estimated liability for unsettled workers ' compensation claims represents our best estimate , utilizing actuarial expertise and projection techniques , at a given reporting date . our estimate is based on an evaluation of information provided by our internal claims adjusters and tpa , coupled with management 's use of an independent actuary to provide an actuarial estimate of future ibnr costs . these elements serve as the basis for our overall estimate for workers ' compensation claims liabilities , which include more specifically the following components : case reserve estimates for reported losses , plus additional amounts for estimated future adverse cost development of ibnr , legal costs and mcc expenses , as well as estimates for unallocated loss adjustment expenses . story_separator_special_tag during 2015 , the company served approximately 4,195 peo clients , compared to approximately 3,665 peo clients during 2014. during 2015 , the company served approximately 1,770 staffing services customers , compared to 1,825 during 2014. gross margin for 2015 totaled approximately $ 129.5 million or 17.5 % of revenue compared to $ 33.4 million or 5.2 % of revenue for 2014. the 12.3 % increase in gross margin percentage was primarily due to decreases in workers ' compensation expense and direct payroll costs , partially offset by a slight increase in payroll taxes and benefits . workers ' compensation expense , in terms of dollars and as a percentage of revenues , decreased from $ 213.5 million or 33.5 % in 2014 to $ 171.1 million or 23.1 % in 2015. the increase was primarily driven by the company 's large worker 's compensation expense change of $ 84.7 million taken in the second quarter of 2014 ( as restated ) . in 2014 after extensive analysis , management concluded that a significant increase of workers ' compensation liability was needed , primarily to reflect the potential adverse development of prior period claims . management 's primary considerations in determining to record a large increase in the company 's estimate of workers ' compensation liability in 2014 included the large increase in the company 's business in recent years , the potential for large future adverse development of open claims , and the increasing complexity and uncertainty surrounding healthcare costs . in 2015 as the actuarial data began to stabilize we did not see the significant adverse development on prior years ' claims as seen in 2014. the company recorded $ 255.7 million and $ 225.3 million at december 31 , 2015 and 2014 , respectively , as an estimated future liability for unsettled workers ' compensation claims liabilities . the estimated liabilities for unsettled workers ' compensation claims represent management 's best estimate based upon an actuarial valuation provided by a third party actuary at december 31 , 2015 and 2014. included in the estimate for workers ' compensation claims liabilities are case reserve estimates for reported losses , plus additional amounts for estimated future adverse cost development of ibnr claims , legal costs , mcc expenses , and unallocated loss adjustment expenses , including future administrative fees to be paid to third party service providers . these estimates are reviewed at least quarterly and adjustments to estimated liabilities are reflected in current operating results as they become known . management believes it has improved the company 's procedures in many areas of its workers ' compensation program over the past three years . see note 6 to the consolidated financial statements incorporated into item 8 of part ii of this report . we believe these efforts have improved management 's ability to estimate workers ' compensation expense . - 43 - direct payroll costs as a percentage of revenues decreased to 17.3 % for 2015 from 19.9 % for 2014 , primarily due to the increase in our mix of professional employer services in the company 's customer base compared to 2014. payroll taxes and benefits as a percentage of revenues for 2015 was 42.1 % compared to 41.4 % for 2014. the percentage rate increase was primarily due to the effect of growth in professional employer services , where payroll taxes and benefits are presented at gross cost , whereas the related direct payroll costs are netted against professional employer services revenue . the effect of the growth in professional employer services on payroll taxes and benefits was partially offset by a decline in the overall state unemployment tax rates where the company does business . selling , general and administrative ( sg & a ) expenses consist of compensation and other expenses relating to the operation of our headquarters and our branch offices and the marketing of our services . sg & a expenses for 2015 amounted to approximately $ 90.2 million , an increase of $ 16.1 million or 21.8 % over 2014. the increase was primarily attributable to an increase in management payroll , incentive bonus pay to field personnel , legal fees , and other variable expense components within sg & a to support our business growth . sg & a expenses as a percentage of revenues increased from 11.6 % in 2014 to 12.2 % in 2015. other expense for 2015 totaled approximately $ 1.3 million as compared to other income of $ 522,000 for 2014 due to an increase in interest expense of $ 1.8 million resulting from the company 's $ 40.0 million term loan entered into on december 29 , 2014. our effective income tax rate for 2015 was 27.5 % , compared to ( 40.1 ) % for 2014. our income tax rate typically differs from the federal statutory tax rate of 35 % primarily due to federal and state tax credits . see note 10 to the consolidated financial statements incorporated into item 8 of part ii of this report for additional information regarding income taxes . years ended december 31 , 2014 and 2013 net loss for 2014 ( as restated ) was $ 25.5 million compared to net income of $ 15.7 million for 2013. the net loss in 2014 was primarily due to the large increase in workers ' compensation expense . diluted loss per share for 2014 was $ 3.57 compared to a diluted earnings per share of $ 2.12 for 2013. revenues for 2014 of $ 636.4 million reflect an increase in the company 's professional employer service fee revenue of $ 77.4 million or 19.7 % , coupled with an increase in staffing services revenue of $ 22.0 million or 15.3 % . approximately 77 % and 74 % , respectively , of our total net revenues during 2014 and 2013 was attributable to our california operations . our growth in professional employer service revenues was attributable to both new

