our customers rely on seismic data to identify areas where subsurface conditions are favorable for the accumulation of existing hydrocarbons , to optimize the development and production of hydrocarbon reservoirs , to better delineate existing oil and natural gas fields , and to augment reservoir management techniques . we acquire geophysical data using the latest in 3-d survey techniques . we introduce acoustic energy into the ground by using vibration equipment or dynamite detonation , depending on the surface terrain and subsurface requirements . the reflected energy , or echoes , is received through geophones , converted into a digital signal at a multi-channel recording unit , and then transmitted to a central recording vehicle . subsurface requirements dictate the number of channels necessary to perform our services . with our state-of-the-art seismic equipment , including computer technology and multiple channels , we acquire , on a cost-effective basis , immense volumes of seismic data that when processed and interpreted produce more precise images of the earth 's subsurface . our customers then use 12 our seismic data to generate 3-d geologic models that help reduce finding costs and improve recovery rates from existing wells . currently , the seismic data acquisition industry is made up of a number of companies divided into two groups . the first group is made up of three publicly-traded companies with long operating histories which field numerous crews and work in a number of different regions and terrain . this group includes us , dawson geophysical company and cgg-veritas . we believe that these companies field approximately half of the seismic crews currently operating in the continental u.s. and canada . the second group is made up of smaller companies who generally run one or two seismic crews and often specialize in specific regions or types of operation . we provide our seismic data acquisition services primarily to onshore oil and natural gas exploration and development companies for use in the onshore drilling and production of oil and natural gas in the continental u.s. and canada . the main factors influencing demand for seismic data acquisition services in our industry are the level of drilling activity by oil and natural gas companies and the sizes of such companies ' exploration and development budgets , which , in turn , depend largely on current and anticipated future crude oil and natural gas prices and depletion rates . our customers are major and independent oil and natural gas exploration and development companies . the services we provide to our customers vary according to the size and needs of each customer . our services are marketed by sales , supervisory , and executive personnel who contact customers to determine their needs and respond to customer inquiries regarding the availability of crews . contacts are based principally upon professional relationships developed over a number of years . the acquisition of seismic data for the oil and natural gas industry is a highly competitive business . contracts for such services generally are awarded on the basis of price quotations , crew experience , and the availability of crews to perform in a timely manner , although factors other than price , such as crew safety , performance history , and technological and operational expertise , are often determinative . our competitors include companies with financial resources that are significantly greater than our own as well as companies of comparable and smaller size . our primary competitors are dawson geophysical company and cgg-veritas . in addition to the previously named companies , we also compete for projects from time to time with smaller seismic companies which operate in local markets with only one or two crews . we believe that our long-term industry expertise , the customer relationships developed over our history , and our financial stability gives us an advantage over most of our competitors in the industry . results of operations year ended december 31 , 2013 , compared to year ended december 31 , 2012 revenues . our revenues were $ 134,534,540 for the year ended december 31 , 2013 , compared to $ 196,317,215 for the same period of 2012 , a decrease of 31.5 % . revenues for the 12 months ended december 31 , 2013 decreased due to the softening in the seismic market that began early in 2013 , our operation of fewer crews in the u.s. and canada during the second , third , and fourth quarters of 2013 as compared to the same period of 2012 , and severe weather conditions in many or our key markets in the u.s. and canada during the fourth quarter of 2013. in 2013 in the u.s. , we operated nine crews in the first quarter , began the second quarter operating nine crews and ended the second quarter operating two crews . we started the third quarter with three crews and ended the quarter operating five crews which we continued operating during the fourth quarter of 2013. in canada , we operated six crews in the first quarter of 2013 , began the second quarter operating six crews , and ended the quarter operating two crews . we operated no crews in canada during the third quarter of 2013 and started and ended the fourth quarter operating three crews . this compares to 2012 when we operated eight seismic crews in the u.s. during the first and second quarters , added a ninth crew in the third quarter , and continued operating nine crews during the fourth quarter of 2012. we operated seven seismic crews in canada during the first quarter , two crews during the second quarter , the equivalent of 1.5 crews during the third quarter , and five crewsduring the fourth quarter of 2012. cost of services . story_separator_special_tag the inherent volatility of the energy industry 's business cycle can cause swift and unpredictable changes in the financial stability of our customers . in 2013 , 2012 and 2011 , no allowances were necessary . 18 impairment of long-lived assets we review long-lived assets for impairment when triggering events occur suggesting deterioration in the assets ' recoverability or fair value . recognition of an impairment charge is required if future expected net cash flows are insufficient to recover the carrying value of the asset . our forecast of future cash flows used to perform impairment analysis includes estimates of future revenues and profitability based on our historical results and analysis of future oil and natural gas prices which are fundamental to assessing demand for our services . if we are unable to achieve these cash flows , our estimates will be revised which could result in an impairment charge for the period of revision . depreciable lives of property , plant , and equipment our property , plant , and equipment are capitalized at historical cost and depreciated over the useful life of the asset . our estimate of this useful life is based on circumstances that exist in the seismic industry and information available at the time of the purchase of the asset . the technology of the equipment used to gather data in the seismic industry has historically evolved such that obsolescence does not occur quickly . as circumstances change and new information becomes available , these estimates could change . we amortize these capitalized items using the straight-line method . capital assets are depreciated over their useful lives ranging from one to seven years , depending on the classification of the asset . tax accounting we account for our income taxes in accordance with the recognition of amounts of taxes payable or refundable for the current year and an asset and liability approach in recognizing the amount of deferred tax liabilities and assets for the future tax consequences of events that have been recognized in our financial statements or tax returns . we determine deferred taxes by identifying the types and amounts of existing temporary differences , measuring the total deferred tax asset or liability using the applicable tax rate , and reducing the deferred tax asset by a valuation allowance if , based on available evidence , it is more likely than not that some portion or all of the deferred tax assets will not be realized . our methodology for recording income taxes requires judgment regarding assumptions and the use of estimates , including determining our annual effective tax rate and the valuation of deferred tax assets , which can create a variance between actual results and estimates and could have a material impact on our provision or benefit for income taxes . share-based compensation we recognize the fair value of the stock-based compensation awards , including stock options and restricted stock , as wages in the consolidated statements of earnings on a straight-line basis over the vesting period of the related stock options or restricted stock awards . this has resulted in the recognition of compensation expense , relative to stock-based awards , in wages in the consolidated statements of earnings of approximately $ 973,000 or approximately $ 0.04 per share for the year ended december 31 , 2013 , and $ 601,000 or approximately $ 0.03 per share for the year ended december 31 , 2012 shares of restricted stock were issued to employees of the company under the 2006 stock awards plan as follows : 18,000 in august of 2007 ; 10,000 in june of 2008 ; 5,000 in july of 2009 ; 5,000 in may of 2010 ; 25,331 in november of 2011 ; 21,520 in december of 2011 ; 6,000 in january of 2012 ; 213,125 in august of 2012 ; and 6,000 in february of 2013. in june of 2013 , 45,000 shares were rescinded from the august 2012 grant , and 30,000 shares were issued in their place . in addition , stock options were issued to employees of the company under the 2006 stock awards plan as follows : 335,000 in october of 2008 ; 135,000 in november of 2009 ; and 15,000 in november of 2011. no incentive stock options were granted to employees in 2010 , 2012 , or 2013. as of december 31 , 2013 , there was approximately $ 389,000 of unrecognized compensation expense related to our share-based compensation plan . 19 recently issued accounting pronouncements in july of 2012 , the financial accounting standards board ( fasb ) issued accounting standards update ( asu ) no . 2012-02 , intangibles-goodwill and other ( topic 350 )  testing indefinite-lived intangible assets for impairment ( asu 2012-02 ) . this asu provides entities with an option to first assess qualitative factors to determine whether events or circumstances indicate that it is more likely than not that the indefinite-lived intangible asset is impaired . if an entity concludes that it is more than 50 % likely that an indefinite-lived intangible asset is not impaired , no further analysis is required . however , if an entity concludes otherwise , it would be required to determine the fair value of the indefinite-lived intangible asset to measure the amount of actual impairment , if any , as currently required under accounting principles generally accepted in the united states ( u.s . gaap ) . the asu is effective for annual and interim impairment tests performed for fiscal years beginning after september 15 , 2012. the company adopted this update in the first quarter of 2013 , and it did not have a significant effect on its consolidated financial statements and related disclosures . in july of 2013 , the fasb issued asu no . 2013-11 , income taxes ( topic 740 ) - presentation of an unrecognized tax benefit when a net operating loss carryforward , a similar tax loss , or a tax credit

cash flows from operating activities . net cash provided by operating activities was $ 22,969,342 for the year ended december 31 , 2013 , compared to $ 39,283,062 for the same period of 2012. the $ 16,313,720 decrease was principally attributable to a net loss of $ 6,316,041 in 2013 as compared to net income of $ 15,671,879 for the same period in 2012. the timing of billings and revenue recognition , the collections of accounts receivable , the timing of receipt and payment of invoices , federal and state income taxes payable , depreciation and amortization , and the mix of contracts account for the remainder of the decrease . working capital increased $ 5,492,070 to $ 17,708,163 as of december 31 , 2013 , from the december 31 , 2012 , working capital of $ 12,216,093. this increase was due primarily to increases in cash and cash equivalents of $ 7,516,130 and $ 3,909,198 in prepaid federal and state income taxes , and decreases of $ 9,582,719 in trade accounts payable , $ 2,958,078 in accrued liabilities , $ 3,104,129 in billings in excess of costs and estimated earnings on uncompleted contracts , and $ 2,180,400 in current maturities of notes payable , partially offset by decreases in trade accounts receivable of $ 24,898,346 and $ 3,950,996 in costs and estimated earnings in excess of billings on uncompleted contracts . cash flows used in investing activities . net cash used in investing activities was $ 667,498 for the year ended december 31 , 2013 , and $ 30,265,696 for the year ended december 31 , 2012. this $ 29,598,198 decrease was due to a decrease in capital expenditures of $ 30,121,740 and a decrease in proceeds from the sale of property and equipment of $ 523,542. cash flows used in financing activities .


 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 from operating activities . net cash provided by operating activities was $ 22,969,342 for the year ended december 31 , 2013 , compared to $ 39,283,062 for the same period of 2012. the $ 16,313,720 decrease was principally attributable to a net loss of $ 6,316,041 in 2013 as compared to net income of $ 15,671,879 for the same period in 2012. the timing of billings and revenue recognition , the collections of accounts receivable , the timing of receipt and payment of invoices , federal and state income taxes payable , depreciation and amortization , and the mix of contracts account for the remainder of the decrease . working capital increased $ 5,492,070 to $ 17,708,163 as of december 31 , 2013 , from the december 31 , 2012 , working capital of $ 12,216,093. this increase was due primarily to increases in cash and cash equivalents of $ 7,516,130 and $ 3,909,198 in prepaid federal and state income taxes , and decreases of $ 9,582,719 in trade accounts payable , $ 2,958,078 in accrued liabilities , $ 3,104,129 in billings in excess of costs and estimated earnings on uncompleted contracts , and $ 2,180,400 in current maturities of notes payable , partially offset by decreases in trade accounts receivable of $ 24,898,346 and $ 3,950,996 in costs and estimated earnings in excess of billings on uncompleted contracts . cash flows used in investing activities . net cash used in investing activities was $ 667,498 for the year ended december 31 , 2013 , and $ 30,265,696 for the year ended december 31 , 2012. this $ 29,598,198 decrease was due to a decrease in capital expenditures of $ 30,121,740 and a decrease in proceeds from the sale of property and equipment of $ 523,542. cash flows used in financing activities .
```    
 Suspicious Activity Report : our customers rely on seismic data to identify areas where subsurface conditions are favorable for the accumulation of existing hydrocarbons , to optimize the development and production of hydrocarbon reservoirs , to better delineate existing oil and natural gas fields , and to augment reservoir management techniques . we acquire geophysical data using the latest in 3-d survey techniques . we introduce acoustic energy into the ground by using vibration equipment or dynamite detonation , depending on the surface terrain and subsurface requirements . the reflected energy , or echoes , is received through geophones , converted into a digital signal at a multi-channel recording unit , and then transmitted to a central recording vehicle . subsurface requirements dictate the number of channels necessary to perform our services . with our state-of-the-art seismic equipment , including computer technology and multiple channels , we acquire , on a cost-effective basis , immense volumes of seismic data that when processed and interpreted produce more precise images of the earth 's subsurface . our customers then use 12 our seismic data to generate 3-d geologic models that help reduce finding costs and improve recovery rates from existing wells . currently , the seismic data acquisition industry is made up of a number of companies divided into two groups . the first group is made up of three publicly-traded companies with long operating histories which field numerous crews and work in a number of different regions and terrain . this group includes us , dawson geophysical company and cgg-veritas . we believe that these companies field approximately half of the seismic crews currently operating in the continental u.s. and canada . the second group is made up of smaller companies who generally run one or two seismic crews and often specialize in specific regions or types of operation . we provide our seismic data acquisition services primarily to onshore oil and natural gas exploration and development companies for use in the onshore drilling and production of oil and natural gas in the continental u.s. and canada . the main factors influencing demand for seismic data acquisition services in our industry are the level of drilling activity by oil and natural gas companies and the sizes of such companies ' exploration and development budgets , which , in turn , depend largely on current and anticipated future crude oil and natural gas prices and depletion rates . our customers are major and independent oil and natural gas exploration and development companies . the services we provide to our customers vary according to the size and needs of each customer . our services are marketed by sales , supervisory , and executive personnel who contact customers to determine their needs and respond to customer inquiries regarding the availability of crews . contacts are based principally upon professional relationships developed over a number of years . the acquisition of seismic data for the oil and natural gas industry is a highly competitive business . contracts for such services generally are awarded on the basis of price quotations , crew experience , and the availability of crews to perform in a timely manner , although factors other than price , such as crew safety , performance history , and technological and operational expertise , are often determinative . our competitors include companies with financial resources that are significantly greater than our own as well as companies of comparable and smaller size . our primary competitors are dawson geophysical company and cgg-veritas . in addition to the previously named companies , we also compete for projects from time to time with smaller seismic companies which operate in local markets with only one or two crews . we believe that our long-term industry expertise , the customer relationships developed over our history , and our financial stability gives us an advantage over most of our competitors in the industry . results of operations year ended december 31 , 2013 , compared to year ended december 31 , 2012 revenues . our revenues were $ 134,534,540 for the year ended december 31 , 2013 , compared to $ 196,317,215 for the same period of 2012 , a decrease of 31.5 % . revenues for the 12 months ended december 31 , 2013 decreased due to the softening in the seismic market that began early in 2013 , our operation of fewer crews in the u.s. and canada during the second , third , and fourth quarters of 2013 as compared to the same period of 2012 , and severe weather conditions in many or our key markets in the u.s. and canada during the fourth quarter of 2013. in 2013 in the u.s. , we operated nine crews in the first quarter , began the second quarter operating nine crews and ended the second quarter operating two crews . we started the third quarter with three crews and ended the quarter operating five crews which we continued operating during the fourth quarter of 2013. in canada , we operated six crews in the first quarter of 2013 , began the second quarter operating six crews , and ended the quarter operating two crews . we operated no crews in canada during the third quarter of 2013 and started and ended the fourth quarter operating three crews . this compares to 2012 when we operated eight seismic crews in the u.s. during the first and second quarters , added a ninth crew in the third quarter , and continued operating nine crews during the fourth quarter of 2012. we operated seven seismic crews in canada during the first quarter , two crews during the second quarter , the equivalent of 1.5 crews during the third quarter , and five crewsduring the fourth quarter of 2012. cost of services . story_separator_special_tag the inherent volatility of the energy industry 's business cycle can cause swift and unpredictable changes in the financial stability of our customers . in 2013 , 2012 and 2011 , no allowances were necessary . 18 impairment of long-lived assets we review long-lived assets for impairment when triggering events occur suggesting deterioration in the assets ' recoverability or fair value . recognition of an impairment charge is required if future expected net cash flows are insufficient to recover the carrying value of the asset . our forecast of future cash flows used to perform impairment analysis includes estimates of future revenues and profitability based on our historical results and analysis of future oil and natural gas prices which are fundamental to assessing demand for our services . if we are unable to achieve these cash flows , our estimates will be revised which could result in an impairment charge for the period of revision . depreciable lives of property , plant , and equipment our property , plant , and equipment are capitalized at historical cost and depreciated over the useful life of the asset . our estimate of this useful life is based on circumstances that exist in the seismic industry and information available at the time of the purchase of the asset . the technology of the equipment used to gather data in the seismic industry has historically evolved such that obsolescence does not occur quickly . as circumstances change and new information becomes available , these estimates could change . we amortize these capitalized items using the straight-line method . capital assets are depreciated over their useful lives ranging from one to seven years , depending on the classification of the asset . tax accounting we account for our income taxes in accordance with the recognition of amounts of taxes payable or refundable for the current year and an asset and liability approach in recognizing the amount of deferred tax liabilities and assets for the future tax consequences of events that have been recognized in our financial statements or tax returns . we determine deferred taxes by identifying the types and amounts of existing temporary differences , measuring the total deferred tax asset or liability using the applicable tax rate , and reducing the deferred tax asset by a valuation allowance if , based on available evidence , it is more likely than not that some portion or all of the deferred tax assets will not be realized . our methodology for recording income taxes requires judgment regarding assumptions and the use of estimates , including determining our annual effective tax rate and the valuation of deferred tax assets , which can create a variance between actual results and estimates and could have a material impact on our provision or benefit for income taxes . share-based compensation we recognize the fair value of the stock-based compensation awards , including stock options and restricted stock , as wages in the consolidated statements of earnings on a straight-line basis over the vesting period of the related stock options or restricted stock awards . this has resulted in the recognition of compensation expense , relative to stock-based awards , in wages in the consolidated statements of earnings of approximately $ 973,000 or approximately $ 0.04 per share for the year ended december 31 , 2013 , and $ 601,000 or approximately $ 0.03 per share for the year ended december 31 , 2012 shares of restricted stock were issued to employees of the company under the 2006 stock awards plan as follows : 18,000 in august of 2007 ; 10,000 in june of 2008 ; 5,000 in july of 2009 ; 5,000 in may of 2010 ; 25,331 in november of 2011 ; 21,520 in december of 2011 ; 6,000 in january of 2012 ; 213,125 in august of 2012 ; and 6,000 in february of 2013. in june of 2013 , 45,000 shares were rescinded from the august 2012 grant , and 30,000 shares were issued in their place . in addition , stock options were issued to employees of the company under the 2006 stock awards plan as follows : 335,000 in october of 2008 ; 135,000 in november of 2009 ; and 15,000 in november of 2011. no incentive stock options were granted to employees in 2010 , 2012 , or 2013. as of december 31 , 2013 , there was approximately $ 389,000 of unrecognized compensation expense related to our share-based compensation plan . 19 recently issued accounting pronouncements in july of 2012 , the financial accounting standards board ( fasb ) issued accounting standards update ( asu ) no . 2012-02 , intangibles-goodwill and other ( topic 350 )  testing indefinite-lived intangible assets for impairment ( asu 2012-02 ) . this asu provides entities with an option to first assess qualitative factors to determine whether events or circumstances indicate that it is more likely than not that the indefinite-lived intangible asset is impaired . if an entity concludes that it is more than 50 % likely that an indefinite-lived intangible asset is not impaired , no further analysis is required . however , if an entity concludes otherwise , it would be required to determine the fair value of the indefinite-lived intangible asset to measure the amount of actual impairment , if any , as currently required under accounting principles generally accepted in the united states ( u.s . gaap ) . the asu is effective for annual and interim impairment tests performed for fiscal years beginning after september 15 , 2012. the company adopted this update in the first quarter of 2013 , and it did not have a significant effect on its consolidated financial statements and related disclosures . in july of 2013 , the fasb issued asu no . 2013-11 , income taxes ( topic 740 ) - presentation of an unrecognized tax benefit when a net operating loss carryforward , a similar tax loss , or a tax credit

