we base our 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 value of assets and liabilities that are not readily apparent from other sources . actual results may differ from these estimates under different assumptions or conditions . senior management has discussed the development , selection and disclosure of these estimates with the audit committee of our board of directors . we believe the following critical accounting policies and the related judgments and estimates affect the preparation of our consolidated financial statements . revenue recognition . revenue is recognized when persuasive evidence of an arrangement exists , upon delivery of the product to the customer at a fixed or determinable price with a reasonable assurance of collection , passage of title and risk of loss to the customer as indicated by the contractual terms and fulfillment of all significant obligations . 34 we design , market and sell our products primarily as commercial , off-the-shelf products . certain customers request different system configurations , generally based on standard options or accessories that we offer . in general , our revenue arrangements do not involve acceptance provisions based upon customer specified acceptance criteria . in those circumstances when customer specified acceptance criteria exist , revenue is deferred until customer acceptance if we can not demonstrate that the system meets those specifications prior to shipment . for any contracts with multiple elements ( i.e . , training , installation , additional parts , etc . ) we allocate revenue among the deliverables primarily based upon objective and reliable evidence of fair value of each element in the arrangement . if objective and reliable evidence of fair value of any element is not available , we use an estimated selling price for purposes of allocating the total arrangement consideration among the elements . in addition , judgments are required in evaluating the credit worthiness of our customers . credit is not extended to customers and revenue is not recognized until we have determined that collectability is reasonably assured . allowance for doubtful accounts . our policy is to maintain allowances for estimated losses resulting from the inability of our customers to make required payments . credit limits are established through a process of reviewing the financial history and stability of each customer . where appropriate , we obtain credit rating reports and financial statements of the customer when determining or modifying their credit limits . we regularly evaluate the collectability of our trade receivable balances based on a combination of factors . when a customer 's account balance becomes past due , we initiate dialogue with the customer to determine the cause . if it is determined that the customer will be unable to meet its financial obligation to us , such as in the case of a bankruptcy filing , deterioration in the customer 's operating results or financial position or other material events impacting their business , we record a specific allowance to reduce the related receivable to the amount we expect to recover given all information presently available . actual write-offs during the past three years have not been material to our results of operations . we also record an allowance for all other customers based on certain other factors including the length of time the receivables are past due and historical collection experience with individual customers . as of december 31 , 2016 , our accounts receivable balance of $ 352.0 million is reported net of allowances for doubtful accounts of $ 6.5 million . we believe our reported allowances at december 31 , 2016 are adequate . if the financial conditions of those customers were to deteriorate , however , resulting in their inability to make payments , we may need to record additional allowances that would result in additional selling , general and administrative expenses being recorded for the period in which such determination is made . inventory . our policy is to record inventory write-downs when conditions exist that indicate that our inventories are likely to be in excess of anticipated demand or are obsolete based upon our assumptions about future demand for our products and market conditions . we regularly evaluate the ability to realize the value of our inventories based on a combination of factors including the following : historical usage rates , forecasted sales or usage , product end of life dates , estimated current and future market values and new product introductions . purchasing requirements and alternative usages are evaluated within these processes to mitigate inventory exposure . when recorded , our write-downs are intended to reduce the carrying value of our inventories to their net realizable value and establish a new cost basis . as of december 31 , 2016 , our inventories of $ 371.4 million are stated net of inventory write-downs . if actual demand for our products deteriorates or market conditions are less favorable than those that we project , additional inventory write-downs may be required in the future . goodwill . goodwill represents the excess purchase price of an acquired enterprise or assets over the estimated fair value of identifiable net assets acquired . we assess goodwill for potential impairment at the reporting unit level during the third quarter of each year , or whenever events or circumstances indicate that the carrying value of these assets may exceed their fair value . we may assess qualitative factors to make this determination , or bypass such a qualitative assessment and proceed directly to testing goodwill for impairment using a two-step process . qualitative factors we may consider include , but are not limited to , macroeconomic conditions , industry conditions , the competitive environment , changes in the market for our products and services , regulatory and political developments and entity specific factors such as strategies and financial performance . story_separator_special_tag the increase in revenue was primarily due to the acquisition of armasight in june 2016. earnings from operations decreased by 0.5 percent in 2016 compared to 2015. the decrease in earnings from operations was primarily due to a change in product mix , as we sold more products with lower gross margins in 2016 compared to 2015 , and acquisition-related amortization and costs associated with the armasight acquisition in june 2016 and the prox dynamics acquisition in november 2016. revenue decreased by 3.3 percent in 2015 compared to 2014 , primarily due to reductions in demand from united states government funded customers and decreases in airborne and integrated systems product line revenues , partially offset by an increase in revenues in the land product line . earnings from operations increased by 14.5 percent primarily due to lower operating expenses and higher gross margins , partially offset by the decrease in revenues . during the year ended december 31 , 2015 , surveillance had restructuring charges of $ 0.2 million , compared to $ 5.2 million in 2014. instruments instruments operating results are as follows ( in millions , except percentages ) : replace_table_token_6_th instruments segment revenue decreased by 3.3 percent in 2016 compared to 2015. the decrease in revenue was primarily due to a revenue decline in europe and apac regions . on a product line basis , declines in our building and predictive maintenance and science products lines were partially offset by increases in our firefighting and automation products lines . earnings from operations decreased 13.9 % in 2016 compared to 2015. the decrease in earnings from operations was due to a change in product mix , as we sold more products with lower gross margins in 2016 compared to 2015 , and increased manufacturing cost under-absorption . revenue decreased by 1.9 percent in 2015 compared to 2014 , primarily due to a revenue decline in the americas region , partially offset by an increase in the asia pacific region ; on a product line basis , declines in our higher end thermography and in 40 our optical gas imaging product lines were partially offset by increases in our science , test and measurement , and fire product lines . revenues for the year ended december 31 , 2015 were also negatively impacted by year over year changes in currency exchange rates . the increase in earnings from operations for the year ended december 31 , 2015 compared to the year ended december 31 , 2014 is primarily due to lower restructuring expenses and costs savings associated with restructuring activities . as a large portion of segment expenses are incurred in europe , the segment experienced a favorable impact on its operating expenses from the changes in foreign currency rates which largely offset the associated decline in revenues in that region . during the year ended december 31 , 2015 , instruments recorded restructuring charges of $ 1.2 million compared to $ 11.0 million in the year ended december 31 , 2014. security security operating results are as follows ( in millions , except percentages ) : replace_table_token_7_th security segment revenue increased by 5.9 percent in 2016 compared to 2015. the increase in revenue was primarily due to the acquisition of dvtel in november 2015 and the inclusion of the associated revenues in the current year , partially offset by a decrease in consumer-grade security products . earnings from operations decreased 63.9 percent in 2016 compared to 2015. the decrease in earnings from operations was primarily due to acquisition-related amortization and higher operating expenses associated with the dvtel acquisition . security segment revenue for the year ended december 31 , 2015 increased by 26.5 percent compared to the prior year primarily due to increased deliveries across all product families and in the americas and europe geographic regions . the increase in earnings from operations in 2015 of 13.1 percent over 2014 was primarily due to the increase in revenues , partially offset by increases in sales and marketing support operating expenses . oem & emerging markets oem & emerging markets operating results are as follows ( in millions , except percentages ) : replace_table_token_8_th oem & emerging markets segment revenue increased by 30.5 percent in 2016 compared to 2015 . the increase in revenue was primarily due to higher deliveries in most of the segment product lines , particularly in cores and components and mobile accessories , and the acquisition of point grey in november 2016. earnings from operations increased 45.3 % in 2016 compared to 2015. the increase in earnings from operations is primarily due to the increase in revenue . revenue decreased by 6.2 percent in 2015 compared to 2014 , primarily due to the loss of approximately $ 8.8 million in 2014 revenue from our former optical components group which was sold in august 2014 and the negative impacts of changes in currency exchange rates . earnings from operations declined in 2015 compared to 2014 primarily due to the decrease in revenue and lower gross margins , partially offset by lower operating expenses . 41 maritime maritime operating results are as follows ( in millions , except percentages ) : replace_table_token_9_th maritime segment revenue increased by 4.4 percent in 2016 compared to 2015 . the increase in revenue is primarily due to an increase in the americas and europe regions . on a product basis , increased shipments of multifunction displays , radar , and thermal cameras more than offset declines in autopilot and instrument shipments . earnings from operations increased 13.3 % in 2016 compared to 2015. the increase in earnings from operations is due an increase in revenue and a decrease in operating expenses , partially offset by an increase in warranty costs . maritime segment revenue for the year ended december 31 , 2015 decreased by 7.6 percent compared to the same period of 2014 primarily due to the negative impact of year over year changes in currency exchange rates in the europe

liquidity and capital resources at december 31 , 2016 , we had a total of $ 361.3 million in cash and cash equivalents , $ 98.3 million of which was in the united states and $ 263.0 million at our foreign subsidiaries , compared to cash and cash equivalents at december 31 , 2015 of $ 472.8 million , of which $ 129.6 million was in the united states and $ 343.2 million at our foreign subsidiaries . we intend to indefinitely reinvest the cash at our foreign subsidiaries in operations and other activities outside the united states . the decrease in cash and cash equivalents in 2016 was primarily due to $ 419.2 million spent on the acquisitions of innovative security designs , llc , armasight , inc , point grey research inc. and prox dynamics as , $ 367.4 million spent on the repayment of long-term debt and a credit agreement , $ 66.0 million spent for the repurchase of our common stock , dividends paid of $ 65.9 million and $ 35.9 million spent on capital expenditures , partially offset by $ 524.6 million of net proceeds from long-term debt and the new credit agreement and cash provided from operations of $ 312.3 million . cash provided by operating activities in 2016 totaled $ 312.3 million compared to $ 275.8 million in 2015 and $ 226.2 million in 2014 . the increase in cash provided from operations in 2016 compared to 2015 was primarily due to changes in current balances and a gain from the sale of a cost-basis investment in 2015 , partially offset by a decrease in net earnings . the increase in cash provided from operations in 2015 compared to 2014 was primarily due to the increase in net earnings .


 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 at december 31 , 2016 , we had a total of $ 361.3 million in cash and cash equivalents , $ 98.3 million of which was in the united states and $ 263.0 million at our foreign subsidiaries , compared to cash and cash equivalents at december 31 , 2015 of $ 472.8 million , of which $ 129.6 million was in the united states and $ 343.2 million at our foreign subsidiaries . we intend to indefinitely reinvest the cash at our foreign subsidiaries in operations and other activities outside the united states . the decrease in cash and cash equivalents in 2016 was primarily due to $ 419.2 million spent on the acquisitions of innovative security designs , llc , armasight , inc , point grey research inc. and prox dynamics as , $ 367.4 million spent on the repayment of long-term debt and a credit agreement , $ 66.0 million spent for the repurchase of our common stock , dividends paid of $ 65.9 million and $ 35.9 million spent on capital expenditures , partially offset by $ 524.6 million of net proceeds from long-term debt and the new credit agreement and cash provided from operations of $ 312.3 million . cash provided by operating activities in 2016 totaled $ 312.3 million compared to $ 275.8 million in 2015 and $ 226.2 million in 2014 . the increase in cash provided from operations in 2016 compared to 2015 was primarily due to changes in current balances and a gain from the sale of a cost-basis investment in 2015 , partially offset by a decrease in net earnings . the increase in cash provided from operations in 2015 compared to 2014 was primarily due to the increase in net earnings .
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 Suspicious Activity Report : we base our 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 value of assets and liabilities that are not readily apparent from other sources . actual results may differ from these estimates under different assumptions or conditions . senior management has discussed the development , selection and disclosure of these estimates with the audit committee of our board of directors . we believe the following critical accounting policies and the related judgments and estimates affect the preparation of our consolidated financial statements . revenue recognition . revenue is recognized when persuasive evidence of an arrangement exists , upon delivery of the product to the customer at a fixed or determinable price with a reasonable assurance of collection , passage of title and risk of loss to the customer as indicated by the contractual terms and fulfillment of all significant obligations . 34 we design , market and sell our products primarily as commercial , off-the-shelf products . certain customers request different system configurations , generally based on standard options or accessories that we offer . in general , our revenue arrangements do not involve acceptance provisions based upon customer specified acceptance criteria . in those circumstances when customer specified acceptance criteria exist , revenue is deferred until customer acceptance if we can not demonstrate that the system meets those specifications prior to shipment . for any contracts with multiple elements ( i.e . , training , installation , additional parts , etc . ) we allocate revenue among the deliverables primarily based upon objective and reliable evidence of fair value of each element in the arrangement . if objective and reliable evidence of fair value of any element is not available , we use an estimated selling price for purposes of allocating the total arrangement consideration among the elements . in addition , judgments are required in evaluating the credit worthiness of our customers . credit is not extended to customers and revenue is not recognized until we have determined that collectability is reasonably assured . allowance for doubtful accounts . our policy is to maintain allowances for estimated losses resulting from the inability of our customers to make required payments . credit limits are established through a process of reviewing the financial history and stability of each customer . where appropriate , we obtain credit rating reports and financial statements of the customer when determining or modifying their credit limits . we regularly evaluate the collectability of our trade receivable balances based on a combination of factors . when a customer 's account balance becomes past due , we initiate dialogue with the customer to determine the cause . if it is determined that the customer will be unable to meet its financial obligation to us , such as in the case of a bankruptcy filing , deterioration in the customer 's operating results or financial position or other material events impacting their business , we record a specific allowance to reduce the related receivable to the amount we expect to recover given all information presently available . actual write-offs during the past three years have not been material to our results of operations . we also record an allowance for all other customers based on certain other factors including the length of time the receivables are past due and historical collection experience with individual customers . as of december 31 , 2016 , our accounts receivable balance of $ 352.0 million is reported net of allowances for doubtful accounts of $ 6.5 million . we believe our reported allowances at december 31 , 2016 are adequate . if the financial conditions of those customers were to deteriorate , however , resulting in their inability to make payments , we may need to record additional allowances that would result in additional selling , general and administrative expenses being recorded for the period in which such determination is made . inventory . our policy is to record inventory write-downs when conditions exist that indicate that our inventories are likely to be in excess of anticipated demand or are obsolete based upon our assumptions about future demand for our products and market conditions . we regularly evaluate the ability to realize the value of our inventories based on a combination of factors including the following : historical usage rates , forecasted sales or usage , product end of life dates , estimated current and future market values and new product introductions . purchasing requirements and alternative usages are evaluated within these processes to mitigate inventory exposure . when recorded , our write-downs are intended to reduce the carrying value of our inventories to their net realizable value and establish a new cost basis . as of december 31 , 2016 , our inventories of $ 371.4 million are stated net of inventory write-downs . if actual demand for our products deteriorates or market conditions are less favorable than those that we project , additional inventory write-downs may be required in the future . goodwill . goodwill represents the excess purchase price of an acquired enterprise or assets over the estimated fair value of identifiable net assets acquired . we assess goodwill for potential impairment at the reporting unit level during the third quarter of each year , or whenever events or circumstances indicate that the carrying value of these assets may exceed their fair value . we may assess qualitative factors to make this determination , or bypass such a qualitative assessment and proceed directly to testing goodwill for impairment using a two-step process . qualitative factors we may consider include , but are not limited to , macroeconomic conditions , industry conditions , the competitive environment , changes in the market for our products and services , regulatory and political developments and entity specific factors such as strategies and financial performance . story_separator_special_tag the increase in revenue was primarily due to the acquisition of armasight in june 2016. earnings from operations decreased by 0.5 percent in 2016 compared to 2015. the decrease in earnings from operations was primarily due to a change in product mix , as we sold more products with lower gross margins in 2016 compared to 2015 , and acquisition-related amortization and costs associated with the armasight acquisition in june 2016 and the prox dynamics acquisition in november 2016. revenue decreased by 3.3 percent in 2015 compared to 2014 , primarily due to reductions in demand from united states government funded customers and decreases in airborne and integrated systems product line revenues , partially offset by an increase in revenues in the land product line . earnings from operations increased by 14.5 percent primarily due to lower operating expenses and higher gross margins , partially offset by the decrease in revenues . during the year ended december 31 , 2015 , surveillance had restructuring charges of $ 0.2 million , compared to $ 5.2 million in 2014. instruments instruments operating results are as follows ( in millions , except percentages ) : replace_table_token_6_th instruments segment revenue decreased by 3.3 percent in 2016 compared to 2015. the decrease in revenue was primarily due to a revenue decline in europe and apac regions . on a product line basis , declines in our building and predictive maintenance and science products lines were partially offset by increases in our firefighting and automation products lines . earnings from operations decreased 13.9 % in 2016 compared to 2015. the decrease in earnings from operations was due to a change in product mix , as we sold more products with lower gross margins in 2016 compared to 2015 , and increased manufacturing cost under-absorption . revenue decreased by 1.9 percent in 2015 compared to 2014 , primarily due to a revenue decline in the americas region , partially offset by an increase in the asia pacific region ; on a product line basis , declines in our higher end thermography and in 40 our optical gas imaging product lines were partially offset by increases in our science , test and measurement , and fire product lines . revenues for the year ended december 31 , 2015 were also negatively impacted by year over year changes in currency exchange rates . the increase in earnings from operations for the year ended december 31 , 2015 compared to the year ended december 31 , 2014 is primarily due to lower restructuring expenses and costs savings associated with restructuring activities . as a large portion of segment expenses are incurred in europe , the segment experienced a favorable impact on its operating expenses from the changes in foreign currency rates which largely offset the associated decline in revenues in that region . during the year ended december 31 , 2015 , instruments recorded restructuring charges of $ 1.2 million compared to $ 11.0 million in the year ended december 31 , 2014. security security operating results are as follows ( in millions , except percentages ) : replace_table_token_7_th security segment revenue increased by 5.9 percent in 2016 compared to 2015. the increase in revenue was primarily due to the acquisition of dvtel in november 2015 and the inclusion of the associated revenues in the current year , partially offset by a decrease in consumer-grade security products . earnings from operations decreased 63.9 percent in 2016 compared to 2015. the decrease in earnings from operations was primarily due to acquisition-related amortization and higher operating expenses associated with the dvtel acquisition . security segment revenue for the year ended december 31 , 2015 increased by 26.5 percent compared to the prior year primarily due to increased deliveries across all product families and in the americas and europe geographic regions . the increase in earnings from operations in 2015 of 13.1 percent over 2014 was primarily due to the increase in revenues , partially offset by increases in sales and marketing support operating expenses . oem & emerging markets oem & emerging markets operating results are as follows ( in millions , except percentages ) : replace_table_token_8_th oem & emerging markets segment revenue increased by 30.5 percent in 2016 compared to 2015 . the increase in revenue was primarily due to higher deliveries in most of the segment product lines , particularly in cores and components and mobile accessories , and the acquisition of point grey in november 2016. earnings from operations increased 45.3 % in 2016 compared to 2015. the increase in earnings from operations is primarily due to the increase in revenue . revenue decreased by 6.2 percent in 2015 compared to 2014 , primarily due to the loss of approximately $ 8.8 million in 2014 revenue from our former optical components group which was sold in august 2014 and the negative impacts of changes in currency exchange rates . earnings from operations declined in 2015 compared to 2014 primarily due to the decrease in revenue and lower gross margins , partially offset by lower operating expenses . 41 maritime maritime operating results are as follows ( in millions , except percentages ) : replace_table_token_9_th maritime segment revenue increased by 4.4 percent in 2016 compared to 2015 . the increase in revenue is primarily due to an increase in the americas and europe regions . on a product basis , increased shipments of multifunction displays , radar , and thermal cameras more than offset declines in autopilot and instrument shipments . earnings from operations increased 13.3 % in 2016 compared to 2015. the increase in earnings from operations is due an increase in revenue and a decrease in operating expenses , partially offset by an increase in warranty costs . maritime segment revenue for the year ended december 31 , 2015 decreased by 7.6 percent compared to the same period of 2014 primarily due to the negative impact of year over year changes in currency exchange rates in the europe

