our revenues consist of storage revenues as well as service revenues . storage revenues , which are considered a key performance indicator for the information management services industry , consist primarily of recurring periodic charges related to the storage of materials or data ( generally on a per unit basis ) that are typically retained by customers for many years and have accounted for over 55 % of total consolidated revenues in each of the last three years . our annual revenues from these fixed periodic storage fees have grown for 23 consecutive years . service revenues are comprised of charges for related core service activities and a wide array of complementary products and services . included in core service revenues are : ( 1 ) the handling of records , including the addition of new records , temporary removal of records from storage , refiling of removed records and the destruction of records ; ( 2 ) courier operations , consisting primarily of the pickup and delivery of records upon customer request ; ( 3 ) secure shredding of sensitive documents ; and ( 4 ) other recurring services , including hybrid services and recurring project revenues . our complementary services revenues include special project work , customer termination and permanent withdrawal fees , data restoration projects , fulfillment services , consulting services , technology services and product sales ( including specially designed storage containers and related supplies ) . a by-product of our secure shredding and destruction services is the sale of recycled paper ( included in complementary services revenues ) , the price of which can fluctuate from period to period , adding to the volatility and reducing the predictability of that revenue stream . our consolidated revenues are also subject to variations caused by the net effect of foreign currency translation on revenue derived from outside the u.s. for the years ended december 31 , 2009 , 2010 and 2011 , we derived approximately 31 % , 32 % and 34 % , respectively , of our total revenues from outside the u.s. we recognize revenue when the following criteria are met : persuasive evidence of an arrangement exists , services have been rendered , the sales price is fixed or determinable and collectability of the resulting receivable is reasonably assured . storage and service revenues are recognized in the month the respective storage or service is provided , and customers are generally billed on a monthly basis on contractually agreed-upon terms . amounts related to future storage or prepaid service contracts for customers where storage fees or services are billed in advance are accounted for as deferred revenue and recognized ratably over the applicable storage or service period or when the service is performed . revenue from the sales of products , which is included as a component of service revenues , is recognized when products are shipped to the customer and title has passed to the customer . revenues from the sales of products have historically not been significant . cost of sales ( excluding depreciation and amortization ) consists primarily of wages and benefits for field personnel , facility occupancy costs ( including rent and utilities ) , transportation expenses ( including vehicle leases and fuel ) , other product cost of sales and other equipment costs and supplies . of these , wages and benefits and facility occupancy costs are the most significant . trends in total wages and benefits in dollars and as a percentage of total consolidated revenue are influenced by changes in headcount and compensation levels , achievement of incentive compensation targets , workforce productivity and variability in costs associated with medical insurance and workers compensation . trends in facility occupancy costs are impacted by the total number of facilities we occupy , the mix of properties we own versus properties we occupy under operating leases , fluctuations in per square foot occupancy costs , and the levels of utilization of these properties . 30 the expansion of our european and secure shredding businesses has impacted the major cost of sales components . our european operations are more labor intensive than our north american businesses and , therefore , add incremental labor costs at a higher percentage of segment revenue than our north american business . our secure shredding operations incur lower facility costs and higher transportation costs as a percentage of revenues compared to our core physical businesses . selling , general and administrative expenses consist primarily of wages and benefits for management , administrative , information technology , sales , account management and marketing personnel , as well as expenses related to communications and data processing , travel , professional fees , bad debts , training , office equipment and supplies . trends in total wage and benefit dollars as a percentage of total consolidated revenue are influenced by changes in headcount and compensation levels , achievement of incentive compensation targets , workforce productivity and variability in costs associated with medical insurance . the overhead structure of our expanding european and asian operations , as compared to our north american operations , is more labor intensive and has not achieved the same level of overhead leverage , which may result in an increase in selling , general and administrative expenses , as a percentage of consolidated revenue , as our european and asian operations become a more meaningful percentage of our consolidated results . our depreciation and amortization charges result primarily from the capital-intensive nature of our business . the principal components of depreciation relate to storage systems , which include racking , building and leasehold improvements , computer systems hardware and software , and buildings . amortization relates primarily to customer relationship acquisition costs and is impacted by the nature and timing of acquisitions . story_separator_special_tag when calculating the allowance , we consider our past loss experience , current and prior trends in our aged receivables and credit memo activity , current economic conditions and specific circumstances of individual receivable balances . if the financial condition of our customers were to significantly change , resulting in a significant improvement or impairment of their ability to make payments , an adjustment of the allowance may be required . we consider accounts receivable to be delinquent after such time as reasonable means of collection have been exhausted . we charge-off uncollectible balances as circumstances warrant , generally no later than one year past due . as of december 31 , 2010 and 2011 , our allowance for doubtful accounts and credit memos balance totaled $ 20.7 million and $ 23.3 million , respectively . impairment of tangible and intangible assets assets subject to amortization : we review long-lived assets and all amortizable intangible assets for impairment whenever events or changes in circumstances indicate the carrying amount of such assets may not be recoverable . recoverability of these assets is determined by comparing the forecasted undiscounted net cash flows of the operation to which the assets relate to their carrying amount . the operations are generally distinguished by the business segment and geographic region in which they operate . if the operation is determined to be unable to recover the carrying amount of its assets , then intangible assets are written down first , followed by the other long-lived assets of the operation , to fair value . fair value is determined based on discounted cash flows or appraised values , depending upon the nature of the assets . goodwillassets not subject to amortization : goodwill and intangible assets with indefinite lives are not amortized but are reviewed annually for impairment , or more frequently if impairment indicators arise . we have selected october 1 as our annual goodwill impairment review date . we performed our annual goodwill impairment review as of october 1 , 2009 , 2010 and 2011 and noted no impairment of goodwill . however , as a result of interim triggering events as discussed below , we recorded provisional goodwill impairment charges in each of the third quarters of 2010 and 2011 in conjunction with the digital sale and associated with our european operations , respectively . these provisional goodwill impairment charges were finalized in the fourth quarters of the 2010 and 2011 fiscal years , respectively . as of december 31 , 2011 , no factors were identified that would alter our october 1 , 2011 goodwill assessment . in making this assessment , we relied on a number of factors including operating results , business plans , anticipated future cash flows , transactions and market place data . there are inherent uncertainties related to these factors and our judgment in applying them to the analysis of goodwill impairment . when changes occur in the composition of one or more reporting units , the goodwill is reassigned to the reporting units affected based on their relative fair values . during the quarter ended september 30 , 2010 , prior to our annual goodwill impairment review , we concluded that events occurred and circumstances changed in our former worldwide digital business reporting unit that required us to conduct an impairment review . the primary factors contributing to our conclusion that we had a triggering event and a requirement to reassess our former worldwide digital business reporting unit goodwill for impairment included : ( 1 ) a reduction in forecasted revenue and operating results due to continued pressure on key parts of the business as a result of the weak economy ; ( 2 ) reduced revenue and profit outlook for our ediscovery service due to smaller average matter size and lower pricing ; ( 3 ) a decision to discontinue certain software development projects ; and ( 4 ) the sale of the domain name product line . as a result of the review , we recorded a provisional goodwill impairment charge associated with our former worldwide digital business reporting unit in the amount of $ 255.0 million during the quarter ended september 30 , 2010. we finalized the estimate in the fourth quarter of 2010 , and we recorded an additional impairment of $ 28.8 million , for a total 37 goodwill impairment charge of $ 283.8 million . for the year ended december 31 , 2010 , based on a relative fair value basis , we allocated $ 85.9 million of this charge to the retained technology escrow services business which continues to be included in our continuing results of operations . the technology escrow services business had previously been reported in the former worldwide digital business segment along with the digital business and the domain name product line and is now reported in the north american business segment . in september 2011 , as a result of certain changes we made in the manner in which our european operations are managed , we reorganized our reporting structure and reassigned goodwill among the revised reporting units . previously , we tested goodwill impairment at the european level on a combined basis . as a result of the management and reporting changes , we concluded that we have three reporting units for our european operations : ( 1 ) uki ; ( 2 ) western europe ; and ( 3 ) central europe . due to these changes , we will perform all future goodwill impairment analyses on the new reporting unit basis . as a result of the restructuring of our reporting units , we concluded that we had an interim triggering event , and , therefore , we performed an interim goodwill impairment test for uki , western europe and central europe in the third quarter of 2011 as of august 31 , 2011. as required by gaap , prior to our goodwill impairment analysis , we performed an impairment assessment on

liquidity and capital resources the following is a summary of our cash balances and cash flows ( in thousands ) as of and for the years ended december 31 , replace_table_token_32_th 58 net cash provided by operating activities from continuing operations was $ 663.5 million for the year ended december 31 , 2011 compared to $ 603.2 million for the year ended december 31 , 2010. the 10.0 % increase resulted primarily from an increase in net income , excluding non-cash charges of $ 31.3 million , a decrease in cash used for working capital of $ 23.9 million and a decrease in realized foreign exchange losses of $ 5.1 million over the same period last year . uses of working capital are primarily related to lower taxes paid from continuing operations , excluding the $ 52.4 million of taxes paid as a result of the sale of our digital business which is classified in discontinued operations , lower amounts paid for cash interest and cash incentive compensation in fiscal year 2011 compared to fiscal year 2010 , partially offset by a reduction in cash collections from customers associated with accounts receivable . we expect our cash flows provided by operating activities from continuing operations to decrease in fiscal year 2012 as a result of a reduction in adjusted oibda related to lower recycled paper revenues , combined with higher interest costs and higher incentive compensation payouts compared to fiscal year 2011. our business requires significant capital expenditures to support our expected revenue growth and ongoing operations as well as new products and services and increased profitability . these expenditures are included in the cash flows from investing activities from continuing operations . the nature of our capital expenditures has evolved over time along with the nature of our business . we make capital expenditures to support a number of different objectives . the majority of our capital goes to support business line growth and our ongoing operations , but we also expend capital to support the development and improvement of products and services and projects designed to increase our profitability . these expenditures are generally small and more discretionary in nature .


 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 following is a summary of our cash balances and cash flows ( in thousands ) as of and for the years ended december 31 , replace_table_token_32_th 58 net cash provided by operating activities from continuing operations was $ 663.5 million for the year ended december 31 , 2011 compared to $ 603.2 million for the year ended december 31 , 2010. the 10.0 % increase resulted primarily from an increase in net income , excluding non-cash charges of $ 31.3 million , a decrease in cash used for working capital of $ 23.9 million and a decrease in realized foreign exchange losses of $ 5.1 million over the same period last year . uses of working capital are primarily related to lower taxes paid from continuing operations , excluding the $ 52.4 million of taxes paid as a result of the sale of our digital business which is classified in discontinued operations , lower amounts paid for cash interest and cash incentive compensation in fiscal year 2011 compared to fiscal year 2010 , partially offset by a reduction in cash collections from customers associated with accounts receivable . we expect our cash flows provided by operating activities from continuing operations to decrease in fiscal year 2012 as a result of a reduction in adjusted oibda related to lower recycled paper revenues , combined with higher interest costs and higher incentive compensation payouts compared to fiscal year 2011. our business requires significant capital expenditures to support our expected revenue growth and ongoing operations as well as new products and services and increased profitability . these expenditures are included in the cash flows from investing activities from continuing operations . the nature of our capital expenditures has evolved over time along with the nature of our business . we make capital expenditures to support a number of different objectives . the majority of our capital goes to support business line growth and our ongoing operations , but we also expend capital to support the development and improvement of products and services and projects designed to increase our profitability . these expenditures are generally small and more discretionary in nature .
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 Suspicious Activity Report : our revenues consist of storage revenues as well as service revenues . storage revenues , which are considered a key performance indicator for the information management services industry , consist primarily of recurring periodic charges related to the storage of materials or data ( generally on a per unit basis ) that are typically retained by customers for many years and have accounted for over 55 % of total consolidated revenues in each of the last three years . our annual revenues from these fixed periodic storage fees have grown for 23 consecutive years . service revenues are comprised of charges for related core service activities and a wide array of complementary products and services . included in core service revenues are : ( 1 ) the handling of records , including the addition of new records , temporary removal of records from storage , refiling of removed records and the destruction of records ; ( 2 ) courier operations , consisting primarily of the pickup and delivery of records upon customer request ; ( 3 ) secure shredding of sensitive documents ; and ( 4 ) other recurring services , including hybrid services and recurring project revenues . our complementary services revenues include special project work , customer termination and permanent withdrawal fees , data restoration projects , fulfillment services , consulting services , technology services and product sales ( including specially designed storage containers and related supplies ) . a by-product of our secure shredding and destruction services is the sale of recycled paper ( included in complementary services revenues ) , the price of which can fluctuate from period to period , adding to the volatility and reducing the predictability of that revenue stream . our consolidated revenues are also subject to variations caused by the net effect of foreign currency translation on revenue derived from outside the u.s. for the years ended december 31 , 2009 , 2010 and 2011 , we derived approximately 31 % , 32 % and 34 % , respectively , of our total revenues from outside the u.s. we recognize revenue when the following criteria are met : persuasive evidence of an arrangement exists , services have been rendered , the sales price is fixed or determinable and collectability of the resulting receivable is reasonably assured . storage and service revenues are recognized in the month the respective storage or service is provided , and customers are generally billed on a monthly basis on contractually agreed-upon terms . amounts related to future storage or prepaid service contracts for customers where storage fees or services are billed in advance are accounted for as deferred revenue and recognized ratably over the applicable storage or service period or when the service is performed . revenue from the sales of products , which is included as a component of service revenues , is recognized when products are shipped to the customer and title has passed to the customer . revenues from the sales of products have historically not been significant . cost of sales ( excluding depreciation and amortization ) consists primarily of wages and benefits for field personnel , facility occupancy costs ( including rent and utilities ) , transportation expenses ( including vehicle leases and fuel ) , other product cost of sales and other equipment costs and supplies . of these , wages and benefits and facility occupancy costs are the most significant . trends in total wages and benefits in dollars and as a percentage of total consolidated revenue are influenced by changes in headcount and compensation levels , achievement of incentive compensation targets , workforce productivity and variability in costs associated with medical insurance and workers compensation . trends in facility occupancy costs are impacted by the total number of facilities we occupy , the mix of properties we own versus properties we occupy under operating leases , fluctuations in per square foot occupancy costs , and the levels of utilization of these properties . 30 the expansion of our european and secure shredding businesses has impacted the major cost of sales components . our european operations are more labor intensive than our north american businesses and , therefore , add incremental labor costs at a higher percentage of segment revenue than our north american business . our secure shredding operations incur lower facility costs and higher transportation costs as a percentage of revenues compared to our core physical businesses . selling , general and administrative expenses consist primarily of wages and benefits for management , administrative , information technology , sales , account management and marketing personnel , as well as expenses related to communications and data processing , travel , professional fees , bad debts , training , office equipment and supplies . trends in total wage and benefit dollars as a percentage of total consolidated revenue are influenced by changes in headcount and compensation levels , achievement of incentive compensation targets , workforce productivity and variability in costs associated with medical insurance . the overhead structure of our expanding european and asian operations , as compared to our north american operations , is more labor intensive and has not achieved the same level of overhead leverage , which may result in an increase in selling , general and administrative expenses , as a percentage of consolidated revenue , as our european and asian operations become a more meaningful percentage of our consolidated results . our depreciation and amortization charges result primarily from the capital-intensive nature of our business . the principal components of depreciation relate to storage systems , which include racking , building and leasehold improvements , computer systems hardware and software , and buildings . amortization relates primarily to customer relationship acquisition costs and is impacted by the nature and timing of acquisitions . story_separator_special_tag when calculating the allowance , we consider our past loss experience , current and prior trends in our aged receivables and credit memo activity , current economic conditions and specific circumstances of individual receivable balances . if the financial condition of our customers were to significantly change , resulting in a significant improvement or impairment of their ability to make payments , an adjustment of the allowance may be required . we consider accounts receivable to be delinquent after such time as reasonable means of collection have been exhausted . we charge-off uncollectible balances as circumstances warrant , generally no later than one year past due . as of december 31 , 2010 and 2011 , our allowance for doubtful accounts and credit memos balance totaled $ 20.7 million and $ 23.3 million , respectively . impairment of tangible and intangible assets assets subject to amortization : we review long-lived assets and all amortizable intangible assets for impairment whenever events or changes in circumstances indicate the carrying amount of such assets may not be recoverable . recoverability of these assets is determined by comparing the forecasted undiscounted net cash flows of the operation to which the assets relate to their carrying amount . the operations are generally distinguished by the business segment and geographic region in which they operate . if the operation is determined to be unable to recover the carrying amount of its assets , then intangible assets are written down first , followed by the other long-lived assets of the operation , to fair value . fair value is determined based on discounted cash flows or appraised values , depending upon the nature of the assets . goodwillassets not subject to amortization : goodwill and intangible assets with indefinite lives are not amortized but are reviewed annually for impairment , or more frequently if impairment indicators arise . we have selected october 1 as our annual goodwill impairment review date . we performed our annual goodwill impairment review as of october 1 , 2009 , 2010 and 2011 and noted no impairment of goodwill . however , as a result of interim triggering events as discussed below , we recorded provisional goodwill impairment charges in each of the third quarters of 2010 and 2011 in conjunction with the digital sale and associated with our european operations , respectively . these provisional goodwill impairment charges were finalized in the fourth quarters of the 2010 and 2011 fiscal years , respectively . as of december 31 , 2011 , no factors were identified that would alter our october 1 , 2011 goodwill assessment . in making this assessment , we relied on a number of factors including operating results , business plans , anticipated future cash flows , transactions and market place data . there are inherent uncertainties related to these factors and our judgment in applying them to the analysis of goodwill impairment . when changes occur in the composition of one or more reporting units , the goodwill is reassigned to the reporting units affected based on their relative fair values . during the quarter ended september 30 , 2010 , prior to our annual goodwill impairment review , we concluded that events occurred and circumstances changed in our former worldwide digital business reporting unit that required us to conduct an impairment review . the primary factors contributing to our conclusion that we had a triggering event and a requirement to reassess our former worldwide digital business reporting unit goodwill for impairment included : ( 1 ) a reduction in forecasted revenue and operating results due to continued pressure on key parts of the business as a result of the weak economy ; ( 2 ) reduced revenue and profit outlook for our ediscovery service due to smaller average matter size and lower pricing ; ( 3 ) a decision to discontinue certain software development projects ; and ( 4 ) the sale of the domain name product line . as a result of the review , we recorded a provisional goodwill impairment charge associated with our former worldwide digital business reporting unit in the amount of $ 255.0 million during the quarter ended september 30 , 2010. we finalized the estimate in the fourth quarter of 2010 , and we recorded an additional impairment of $ 28.8 million , for a total 37 goodwill impairment charge of $ 283.8 million . for the year ended december 31 , 2010 , based on a relative fair value basis , we allocated $ 85.9 million of this charge to the retained technology escrow services business which continues to be included in our continuing results of operations . the technology escrow services business had previously been reported in the former worldwide digital business segment along with the digital business and the domain name product line and is now reported in the north american business segment . in september 2011 , as a result of certain changes we made in the manner in which our european operations are managed , we reorganized our reporting structure and reassigned goodwill among the revised reporting units . previously , we tested goodwill impairment at the european level on a combined basis . as a result of the management and reporting changes , we concluded that we have three reporting units for our european operations : ( 1 ) uki ; ( 2 ) western europe ; and ( 3 ) central europe . due to these changes , we will perform all future goodwill impairment analyses on the new reporting unit basis . as a result of the restructuring of our reporting units , we concluded that we had an interim triggering event , and , therefore , we performed an interim goodwill impairment test for uki , western europe and central europe in the third quarter of 2011 as of august 31 , 2011. as required by gaap , prior to our goodwill impairment analysis , we performed an impairment assessment on

