outside of the u.s. , the worldwide rig count at the end of 2013 was up versus the end of 2012 , while activity in certain parts of the world such as west africa , east africa , the middle east and the asia pacific region continued to exhibit some strength . 16 as a result of slow global economic growth from 2009 through 2013 , in conjunction with moderate commodity prices , our clients did not materially increase their activity levels . in spite of this , our revenue increased more than 9 % over 2012 , with operating income increasing over 12 % . results of operations results of operations as a percentage of applicable revenue are as follows ( dollars in thousands ) : replace_table_token_3_th operating results for the year ended december 31 , 2013 compared to the years ended december 31 , 2012 and 2011 we evaluate our operating results by analyzing revenue , operating income and net income margin ( defined as net income divided by total revenue ) . since we have a relatively fixed cost structure , increases in revenue generally translate into higher operating income results as well as net income margin percentages . results for the years ended december 31 , 2013 , 2012 and 2011 are summarized in the following chart : 17 income and margin analysis services revenue services revenue increased to $ 765.4 million for 2013 from $ 693.9 million for 2012 and $ 621.8 million for 2011 . the increase in services revenue from 2012 to 2013 was primarily due to our continued focus on existing fields and fields under development , as opposed to increasingly volatile and downward trends in exploration efforts . the increase in services revenue from 2011 to 2012 was primarily due to our continued focus on worldwide crude-oil related and large natural gas plays for liquefaction projects , especially those related to the development of deepwater fields offshore west and east africa , eastern south america , the eastern mediterranean , and the gulf of mexico . product sales revenue product sales revenue increased to $ 308.1 million for 2013 , from $ 287.2 million for 2012 and $ 285.9 million for 2011 . the increase in revenue from 2012 to 2013 , was driven primarily by the continued successful introduction of new technologies such as our new completion systems for optimizing completions and stimulations of horizontal wells , including our htd-blast tm and kodiak tm enhanced perforating systems , and our permanent reservoir monitoring systems , primarily in the canadian market . the increase in revenue from 2011 to 2012 was due to greater market penetration of our patented and proprietary completion systems . cost of services , excluding depreciation cost of services increased to $ 445.0 million for 2013 from $ 413.1 million for 2012 and $ 395.3 million for 2011 . as a percentage of services revenue , cost of services decreased to 58.1 % in 2013 from 59.5 % in 2012 and 63.6 % in 2011 . the 18 margin improvement is a result of higher sales , including a better mix of projects aimed at more complex reservoirs , over the fixed cost structure . cost of product sales , excluding depreciation cost of product sales increased to $ 218.0 million for 2013 from $ 208.7 million for 2012 and $ 198.1 million for 2011 . as a percentage of product sales revenue , cost of sales decreased to 70.8 % for 2013 compared to 72.7 % for 2012 and up from 69.3 % for 2011 . the decrease in cost of sales as a percentage of product sales revenue was primarily due to the growing demand for our new technologies which led to an overall increase in sales , which improved absorption of our fixed cost structure . the increase in cost of sales as a percentage of product sales revenue in 2012 , as compared to 2011 , was primarily due to the substantial increase in the cost of raw materials , especially specialty steel , in the second half of 2011 which increased our cost of product sales in 2012 as these raw materials were converted to finished goods which were subsequently sold . general and administrative expense general and administrative expenses include corporate management and centralized administrative services that benefit our operations . general and administrative expenses were $ 52.0 million for 2013 , which represents 4.8 % of revenue , a slight increase compared to 4.4 % of revenue in 2012 . general and administrative expenses as a percent of revenue were 4.5 % in 2011 . the increase during 2013 was primarily attributable to increases in compensation costs , including variable compensation . depreciation and amortization expense depreciation and amortization expense of $ 25.5 million increased by $ 2.6 million in 2013 compared to 2012 , after decreasing by $ 0.4 million in 2012 compared to 2011 . the increase during 2013 is a result of growth in our client-directed capex program resulting from continued improvement in industry activity , particularly internationally and in the deepwater environment . other income , net the components of other income , net , were as follows ( in thousands ) : replace_table_token_4_th we incurred property losses during hurricane isaac in 2012. during 2013 , our insurance claim for property losses and business interruption was fully settled for a gain of $ 1.6 million . during 2012 , we incurred legal , accounting and other fees in connection with the realignment of certain of our legal entities into a more cost effective structure and the listing of our shares on the nyse euronext amsterdam . as a result of a supply disruption in 2011 from a key vendor that provided certain high performance specialty steel tubulars used with the company 's perforating systems , we filed a claim under our business interruption insurance policy which was fully settled during 2012 for $ 4.4 million . story_separator_special_tag intangibles with indeterminable lives , which consist primarily of corporate trade names , are not amortized , but are tested for impairment annually or whenever events or changes in circumstances indicate that impairment is possible . we review our long-lived assets , including definite-lived intangible assets , for impairment when events or changes in circumstances indicate that their net book value may not be recovered over their remaining service lives . indicators of possible 25 impairment may include significant declines in activity levels in regions where specific assets or groups of assets are located , extended periods of idle use , declining revenue or cash flow or overall changes in general market conditions . whenever possible impairment is indicated , we compare the carrying value of the assets to the sum of the estimated undiscounted future cash flows expected from use , plus salvage value , less the costs of the subsequent disposition of the assets . if impairment is still indicated , we compare the fair value of the assets to the carrying amount , and recognize an impairment loss for the amount by which the carrying value exceeds the fair value . we did not record any material impairment charges relating to our long-lived assets held for use during the years ended december 31 , 2013 , 2012 and 2011 . we record goodwill as the excess of the purchase price over the fair value of the net assets acquired in acquisitions accounted for under the purchase method of accounting . we test goodwill for impairment annually , or more frequently if circumstances indicate a possible impairment . we evaluated our goodwill for impairment by comparing the fair value of each of our reporting units , which are our reportable segments , to their net carrying value as of the balance sheet date . we estimated the fair value of each reporting unit using a discounted future cash flow analysis . estimated future cash flows were based on the company 's best estimate of future performance . our impairment analysis is quantitative ; however , it includes subjective estimates based on assumptions regarding future growth rates , interest rates and operating expenses . if the carrying value of the reporting unit exceeds the fair value determined , an impairment loss is recorded to the extent that the implied fair value of the goodwill of the reporting unit is less than its carrying value . we did not record impairment charges relating to our goodwill or our indefinite-lived intangible assets during the years ended december 31 , 2013 , 2012 and 2011 . we have never identified nor recorded any impairments relating to the goodwill of our current continuing operations . obsolete inventory we forecast client demand , considering changes in technology which could result in obsolescence . our valuation reserve for obsolete inventory is based on historical regional sales trends , and various other assumptions and judgments including future demand for this inventory . our industry is subject to technological change and new product development that could result in obsolete inventory . our valuation reserve for obsolete inventory at december 31 , 2013 was $ 2.9 million compared to $ 3.3 million at december 31 , 2012 . pensions and other postretirement benefits we maintain a noncontributory defined benefit pension plan for substantially all of our dutch employees hired before 2007. we utilize an actuary to assist in determining the value of the projected benefit obligation . this valuation requires various estimates and assumptions concerning mortality , future pay increases , expected return on plan assets and discount rate used to value our obligations . we recognize net periodic benefit cost based upon these estimates . as required by current accounting standards , we recognize net periodic pension costs associated with this plan in income from current operations and recognize the unfunded status of the plan , if any , as a long-term liability . in addition , we recognize as a component of other comprehensive income , the gains or losses and prior service costs or credits that arise during the period but are not recognized as components of net periodic pension cost . see note 10 pensions and other postretirement benefit plans . furthermore , we sponsor several defined contribution plans for the benefit of our employees . we expense these contributions in the period the contribution is made . stock-based compensation we have two stock-based compensation plans , as described in further detail in note 13 to our consolidated financial statements . we evaluate the probability that certain of our stock-based plans will meet targets established within the respective agreements and result in the vesting of such awards . in addition , we derive an estimated forfeiture rate that is used in calculating the expense for these awards . for new awards issued and awards modified , repurchased or canceled , the compensation expense is equal to the fair value of the award at the date of the grant and is recognized in the consolidated statement of operations for those awards earned over the requisite service period of the award . the fair value is determined by calculating the discounted value of the shares over the vesting period and applying an estimated forfeiture rate . off-balance sheet arrangements 26 other than normal operating leases , we do not have any off-balance sheet financing arrangements such as securitization agreements , liquidity trust vehicles , synthetic leases or special purpose entities . as such , we are not materially exposed to any financing , liquidity , market or credit risk that could arise if we had engaged in such financing arrangements . forward-looking statements this form 10-k and the documents incorporated in this form 10-k by reference contain forward-looking statements within the meaning of section 27a of the securities act of 1933 and section 21e of the exchange act . these `` forward-looking statements `` are based on an analysis of currently available competitive , financial and

cash flows the following table summarizes cash flows for the years ended december 31 , 2013 , 2012 and 2011 ( in thousands ) : 22 replace_table_token_8_th the increase in cash flow from operating activities in 2013 compared to 2012 was primarily due to an increase in net income and a decrease to income tax receivables , while the increase in 2012 compared to 2011 was attributable to increased net income . cash flow used in investing activities increased $ 9.2 million in 2013 over 2012 primarily due to an increase in capital expenditures and an increase in the premiums on life insurance policies and decreased $ 18.0 million in 2012 over 2011 as a result of an acquisition in 2011. cash flow used in financing activities in 2013 increased $ 35.8 million compared to 2012 . cash flow used in financing activities in 2012 decreased $ 43.4 million compared to 2011 . during 2013 , we spent $ 227.2 million to repurchase our common shares and $ 58.6 million to pay dividends , offset by a net increase in our debt balance of $ 33.0 million . during 2012 , we spent $ 175.7 million to repurchase our common shares and $ 52.9 million to pay dividends , offset by a net increase in our debt balance of $ 11.0 million . during 2011 , we spent $ 61.8 million to repurchase our common shares , $ 46.0 million to pay dividends and $ 219.4 million to settle our warrants , offset by a net increase of $ 73.0 million in the balance of our credit facility . during the year ended december 31 , 2013 , we repurchased 1,482,198 shares of our common stock for an aggregate amount of $ 227.2 million , or an average price of $ 153.30 per share .


 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.
     ```cash flows the following table summarizes cash flows for the years ended december 31 , 2013 , 2012 and 2011 ( in thousands ) : 22 replace_table_token_8_th the increase in cash flow from operating activities in 2013 compared to 2012 was primarily due to an increase in net income and a decrease to income tax receivables , while the increase in 2012 compared to 2011 was attributable to increased net income . cash flow used in investing activities increased $ 9.2 million in 2013 over 2012 primarily due to an increase in capital expenditures and an increase in the premiums on life insurance policies and decreased $ 18.0 million in 2012 over 2011 as a result of an acquisition in 2011. cash flow used in financing activities in 2013 increased $ 35.8 million compared to 2012 . cash flow used in financing activities in 2012 decreased $ 43.4 million compared to 2011 . during 2013 , we spent $ 227.2 million to repurchase our common shares and $ 58.6 million to pay dividends , offset by a net increase in our debt balance of $ 33.0 million . during 2012 , we spent $ 175.7 million to repurchase our common shares and $ 52.9 million to pay dividends , offset by a net increase in our debt balance of $ 11.0 million . during 2011 , we spent $ 61.8 million to repurchase our common shares , $ 46.0 million to pay dividends and $ 219.4 million to settle our warrants , offset by a net increase of $ 73.0 million in the balance of our credit facility . during the year ended december 31 , 2013 , we repurchased 1,482,198 shares of our common stock for an aggregate amount of $ 227.2 million , or an average price of $ 153.30 per share .
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 Suspicious Activity Report : outside of the u.s. , the worldwide rig count at the end of 2013 was up versus the end of 2012 , while activity in certain parts of the world such as west africa , east africa , the middle east and the asia pacific region continued to exhibit some strength . 16 as a result of slow global economic growth from 2009 through 2013 , in conjunction with moderate commodity prices , our clients did not materially increase their activity levels . in spite of this , our revenue increased more than 9 % over 2012 , with operating income increasing over 12 % . results of operations results of operations as a percentage of applicable revenue are as follows ( dollars in thousands ) : replace_table_token_3_th operating results for the year ended december 31 , 2013 compared to the years ended december 31 , 2012 and 2011 we evaluate our operating results by analyzing revenue , operating income and net income margin ( defined as net income divided by total revenue ) . since we have a relatively fixed cost structure , increases in revenue generally translate into higher operating income results as well as net income margin percentages . results for the years ended december 31 , 2013 , 2012 and 2011 are summarized in the following chart : 17 income and margin analysis services revenue services revenue increased to $ 765.4 million for 2013 from $ 693.9 million for 2012 and $ 621.8 million for 2011 . the increase in services revenue from 2012 to 2013 was primarily due to our continued focus on existing fields and fields under development , as opposed to increasingly volatile and downward trends in exploration efforts . the increase in services revenue from 2011 to 2012 was primarily due to our continued focus on worldwide crude-oil related and large natural gas plays for liquefaction projects , especially those related to the development of deepwater fields offshore west and east africa , eastern south america , the eastern mediterranean , and the gulf of mexico . product sales revenue product sales revenue increased to $ 308.1 million for 2013 , from $ 287.2 million for 2012 and $ 285.9 million for 2011 . the increase in revenue from 2012 to 2013 , was driven primarily by the continued successful introduction of new technologies such as our new completion systems for optimizing completions and stimulations of horizontal wells , including our htd-blast tm and kodiak tm enhanced perforating systems , and our permanent reservoir monitoring systems , primarily in the canadian market . the increase in revenue from 2011 to 2012 was due to greater market penetration of our patented and proprietary completion systems . cost of services , excluding depreciation cost of services increased to $ 445.0 million for 2013 from $ 413.1 million for 2012 and $ 395.3 million for 2011 . as a percentage of services revenue , cost of services decreased to 58.1 % in 2013 from 59.5 % in 2012 and 63.6 % in 2011 . the 18 margin improvement is a result of higher sales , including a better mix of projects aimed at more complex reservoirs , over the fixed cost structure . cost of product sales , excluding depreciation cost of product sales increased to $ 218.0 million for 2013 from $ 208.7 million for 2012 and $ 198.1 million for 2011 . as a percentage of product sales revenue , cost of sales decreased to 70.8 % for 2013 compared to 72.7 % for 2012 and up from 69.3 % for 2011 . the decrease in cost of sales as a percentage of product sales revenue was primarily due to the growing demand for our new technologies which led to an overall increase in sales , which improved absorption of our fixed cost structure . the increase in cost of sales as a percentage of product sales revenue in 2012 , as compared to 2011 , was primarily due to the substantial increase in the cost of raw materials , especially specialty steel , in the second half of 2011 which increased our cost of product sales in 2012 as these raw materials were converted to finished goods which were subsequently sold . general and administrative expense general and administrative expenses include corporate management and centralized administrative services that benefit our operations . general and administrative expenses were $ 52.0 million for 2013 , which represents 4.8 % of revenue , a slight increase compared to 4.4 % of revenue in 2012 . general and administrative expenses as a percent of revenue were 4.5 % in 2011 . the increase during 2013 was primarily attributable to increases in compensation costs , including variable compensation . depreciation and amortization expense depreciation and amortization expense of $ 25.5 million increased by $ 2.6 million in 2013 compared to 2012 , after decreasing by $ 0.4 million in 2012 compared to 2011 . the increase during 2013 is a result of growth in our client-directed capex program resulting from continued improvement in industry activity , particularly internationally and in the deepwater environment . other income , net the components of other income , net , were as follows ( in thousands ) : replace_table_token_4_th we incurred property losses during hurricane isaac in 2012. during 2013 , our insurance claim for property losses and business interruption was fully settled for a gain of $ 1.6 million . during 2012 , we incurred legal , accounting and other fees in connection with the realignment of certain of our legal entities into a more cost effective structure and the listing of our shares on the nyse euronext amsterdam . as a result of a supply disruption in 2011 from a key vendor that provided certain high performance specialty steel tubulars used with the company 's perforating systems , we filed a claim under our business interruption insurance policy which was fully settled during 2012 for $ 4.4 million . story_separator_special_tag intangibles with indeterminable lives , which consist primarily of corporate trade names , are not amortized , but are tested for impairment annually or whenever events or changes in circumstances indicate that impairment is possible . we review our long-lived assets , including definite-lived intangible assets , for impairment when events or changes in circumstances indicate that their net book value may not be recovered over their remaining service lives . indicators of possible 25 impairment may include significant declines in activity levels in regions where specific assets or groups of assets are located , extended periods of idle use , declining revenue or cash flow or overall changes in general market conditions . whenever possible impairment is indicated , we compare the carrying value of the assets to the sum of the estimated undiscounted future cash flows expected from use , plus salvage value , less the costs of the subsequent disposition of the assets . if impairment is still indicated , we compare the fair value of the assets to the carrying amount , and recognize an impairment loss for the amount by which the carrying value exceeds the fair value . we did not record any material impairment charges relating to our long-lived assets held for use during the years ended december 31 , 2013 , 2012 and 2011 . we record goodwill as the excess of the purchase price over the fair value of the net assets acquired in acquisitions accounted for under the purchase method of accounting . we test goodwill for impairment annually , or more frequently if circumstances indicate a possible impairment . we evaluated our goodwill for impairment by comparing the fair value of each of our reporting units , which are our reportable segments , to their net carrying value as of the balance sheet date . we estimated the fair value of each reporting unit using a discounted future cash flow analysis . estimated future cash flows were based on the company 's best estimate of future performance . our impairment analysis is quantitative ; however , it includes subjective estimates based on assumptions regarding future growth rates , interest rates and operating expenses . if the carrying value of the reporting unit exceeds the fair value determined , an impairment loss is recorded to the extent that the implied fair value of the goodwill of the reporting unit is less than its carrying value . we did not record impairment charges relating to our goodwill or our indefinite-lived intangible assets during the years ended december 31 , 2013 , 2012 and 2011 . we have never identified nor recorded any impairments relating to the goodwill of our current continuing operations . obsolete inventory we forecast client demand , considering changes in technology which could result in obsolescence . our valuation reserve for obsolete inventory is based on historical regional sales trends , and various other assumptions and judgments including future demand for this inventory . our industry is subject to technological change and new product development that could result in obsolete inventory . our valuation reserve for obsolete inventory at december 31 , 2013 was $ 2.9 million compared to $ 3.3 million at december 31 , 2012 . pensions and other postretirement benefits we maintain a noncontributory defined benefit pension plan for substantially all of our dutch employees hired before 2007. we utilize an actuary to assist in determining the value of the projected benefit obligation . this valuation requires various estimates and assumptions concerning mortality , future pay increases , expected return on plan assets and discount rate used to value our obligations . we recognize net periodic benefit cost based upon these estimates . as required by current accounting standards , we recognize net periodic pension costs associated with this plan in income from current operations and recognize the unfunded status of the plan , if any , as a long-term liability . in addition , we recognize as a component of other comprehensive income , the gains or losses and prior service costs or credits that arise during the period but are not recognized as components of net periodic pension cost . see note 10 pensions and other postretirement benefit plans . furthermore , we sponsor several defined contribution plans for the benefit of our employees . we expense these contributions in the period the contribution is made . stock-based compensation we have two stock-based compensation plans , as described in further detail in note 13 to our consolidated financial statements . we evaluate the probability that certain of our stock-based plans will meet targets established within the respective agreements and result in the vesting of such awards . in addition , we derive an estimated forfeiture rate that is used in calculating the expense for these awards . for new awards issued and awards modified , repurchased or canceled , the compensation expense is equal to the fair value of the award at the date of the grant and is recognized in the consolidated statement of operations for those awards earned over the requisite service period of the award . the fair value is determined by calculating the discounted value of the shares over the vesting period and applying an estimated forfeiture rate . off-balance sheet arrangements 26 other than normal operating leases , we do not have any off-balance sheet financing arrangements such as securitization agreements , liquidity trust vehicles , synthetic leases or special purpose entities . as such , we are not materially exposed to any financing , liquidity , market or credit risk that could arise if we had engaged in such financing arrangements . forward-looking statements this form 10-k and the documents incorporated in this form 10-k by reference contain forward-looking statements within the meaning of section 27a of the securities act of 1933 and section 21e of the exchange act . these `` forward-looking statements `` are based on an analysis of currently available competitive , financial and

