during the year ended december 29 , 2014 , we experienced a decline in gross and operating margins in our asia pacific operating segment resulting from the underutilization of certain advanced technology production facilities and an unexpected power outage . we experienced underutilization in the first and second quarters of 2014 caused by an increase in capacity to service an expected higher level of business which did not materialize . additionally , in the third quarter of 2014 , we experienced a 5 day production shut down due to an unexpected 43 power outage at one of our advanced technology production facilities which negatively impacted our productivity and yield improvement efforts as we were launching new products and significantly ramping for increased volumes . although we believe these to be unique challenges , we may experience similar challenges in the future which could negatively impact gross margins . while our customers include both oems and ems providers , we measure customers based on oem companies as they are the ultimate end customers . sales to our 5 largest customers accounted for 44 % , 41 % and 33 % of our net sales in 2014 , 2013 and 2012 , respectively . we sell to oems both directly and indirectly through ems providers . the following table shows the percentage of our net sales attributable to each of the principal end markets we served for the periods indicated : replace_table_token_9_th ( 1 ) sales to ems companies are classified by the end markets of their oem customers . ( 2 ) certain reclassifications of prior year end market percentages have been made to conform to the current year presentation . beginning in the first quarter of 2013 , we reclassified substrate pcbs , which were included in the other end market , into the end markets that the substrate pcbs are sold into  predominantly cellular phone . ( 3 ) smartphones are included in the cellular phone end market , touchscreen tablets are included in the computing/storage/peripherals end market and other mobile devices such as e-readers are included in the other end market . purchase orders may be cancelled prior to shipment . we charge customers a fee , based on percentage completed , if an order is cancelled once it has entered production . we derive revenues primarily from the sale of pcbs and backplane assemblies using customer-supplied engineering and design plans . we recognize revenues when persuasive evidence of a sales arrangement exists , the sales terms are fixed or determinable , title and risk of loss have transferred , and collectability is reasonably assured  generally when products are shipped to the customer . net sales consist of gross sales less an allowance for returns , which typically have been less than 3 % of gross sales . we provide our customers a limited right of return for defective pcbs and backplane assemblies . we record an estimate for sales returns and allowances at the time of sale based on historical results . cost of goods sold consists of materials , labor , outside services , and overhead expenses incurred in the manufacture and testing of our products . many factors affect our gross margin , including capacity utilization , product mix , production volume , and yield . we generally do not participate in any significant long-term contracts with suppliers , and we believe there are a number of potential suppliers for the raw materials we use . selling and marketing expenses consist primarily of salaries , labor related benefits , and commissions paid to our internal sales force , independent sales representatives , and our sales support staff , as well as costs associated with marketing materials and trade shows . general and administrative costs primarily include the salaries for executive , finance , accounting , information technology , facilities and human resources personnel , discretionary meals for employees in asia , as well as insurance expenses , expenses for accounting and legal assistance , incentive compensation expense , and gains or losses on the sale or disposal of property , plant and equipment . 44 critical accounting policies and estimates our consolidated financial statements included in this report have been prepared in accordance with accounting principles generally accepted in the united states of america . the preparation of these financial statements requires us to make estimates and assumptions that affect the reported amounts of assets , liabilities , net sales and expenses , and related disclosure of contingent assets and liabilities . a critical accounting policy is defined as one that is both material to the presentation of our consolidated financial statements and requires us to make judgments that could have a material effect on our financial condition or results of operations . these policies require us to make assumptions about matters that are highly uncertain at the time of the estimate . different estimates we could reasonably have used , or changes in the estimates that are reasonably likely to occur , or could have a material effect on our financial condition or results of operations . 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 values of assets and liabilities that are not readily apparent from other sources . management has discussed the development , selection and disclosure of these estimates with the audit committee of our board of directors . actual results may differ from these estimates under different assumptions or conditions . our critical accounting policies include asset valuation related to bad debts and inventory ; sales returns and allowances ; impairment of long-lived assets , including goodwill and intangible assets ; derivative instruments and hedging activities ; realizability of deferred tax assets ; and determining self-insurance reserves . story_separator_special_tag overall gross margin decreased from 16.7 % for the year ended december 31 , 2012 to 15.9 % for the year ended december 30 , 2013. gross margin for the asia pacific segment decreased from 15.8 % for the year ended december 31 , 2012 to 15.5 % for the year ended december 30 , 2013 primarily due to a specific product warranty claim amounting to $ 8.0 million , increased equipment related expenses , and higher labor costs . gross margin for the north america segment decreased from 18.2 % for the year ended december 31 , 2012 to 16.6 % for the year ended december 30 , 2013 , primarily due to higher direct material content , labor costs and incentive compensation expense . selling and marketing expenses selling and marketing expenses decreased $ 0.2 million , or 0.5 % , from $ 37.1 million for the year ended december 30 , 2013 to $ 36.9 million for the year ended december 29 , 2014. as a percentage of net sales , selling and marketing expenses were 2.7 % and 2.8 % for the years ended december 30 , 2013 and december 29 , 2014 , respectively . the decrease in selling and marketing expenses for the year ended december 29 , 2014 , was primarily due to reduced commissions and lower travel expenses over the comparable periods of the prior year . additionally , the increase in selling and marketing expense as a percentage of net sales for the year ended december 29 , 2014 was primarily due to lower net sales . selling and marketing expenses increased $ 1.1 million , or 3.1 % , from $ 36.0 million for the year ended december 31 , 2012 to $ 37.1 million for the year ended december 30 , 2013. the increase in selling and marketing expenses was primarily due to an increase in labor costs and stock-based compensation expense . as a percentage of net sales , selling and marketing expenses were 2.7 % for both of the years ended december 31 , 2012 and december 30 , 2013. general and administrative expenses general and administrative expenses decreased $ 4.9 million from $ 105.9 million , or 7.7 % of net sales , for the year ended december 30 , 2013 to $ 101.0 million , or 7.6 % of net sales , for the year ended december 29 , 2014. the decrease in general and administrative expense for the year ended december 29 , 2014 is primarily due to costs savings resulting from the sale of our controlling equity interest in a subsidiary in the asia pacific operating segment and lower incentive compensation expense , offset by the $ 6.0 million of acquisition-related costs recorded in the third and fourth quarters of 2014. general and administrative expenses increased $ 7.9 million from $ 98.0 million , or 7.3 % of net sales , for the year ended december 31 , 2012 to $ 105.9 million , or 7.7 % of net sales , for the year ended december 30 , 2013. the increase in expense primarily relates to an increase in incentive compensation expense as well as increased labor costs , partially offset by lower stock-based compensation expense . impairment of long-lived assets and restructuring charges for the year ended december 29 , 2014 and december 30 , 2013 , in conjunction with the shutdown of the suzhou , china facility , we recorded charges of $ 1.8 million and $ 10.8 million , respectively , primarily arising from the impairment of certain machinery and equipment . additionally , in conjunction with the shutdown , we recorded restructuring charges of $ 3.4 million during the year ended december 30 , 2013 , consisting of separation costs associated with the layoff of 774 employees . during the year ended december 31 , 2012 , we recorded an impairment charge in the asia pacific operating segment in the amount of $ 18.1 million . this impairment charge related specifically to two real estate assets for which there was expected underutilization and limited market demand . 50 if forecasts and assumptions used to support the realizability of our long-lived assets change in the future , significant impairment charges could result that would adversely affect our results of operations and financial condition . impairment of goodwill and definite-lived intangibles during the year ended december 31 , 2012 , we performed an interim evaluation of goodwill and definite-lived intangibles as we believed there were impairment triggering events and circumstances that warranted an evaluation . these circumstances included continued decreases in operating profit due to softer revenues and shifts in product mix when compared with projected results . these factors led to weaker than expected performance for the year ended december 31 , 2012. as a result , we recorded a charge for the impairment of goodwill and definite-lived intangibles in the amount of $ 200.3 million for the year ended december 31 , 2012 , consisting of charges of $ 171.4 million for goodwill and $ 28.9 million for definite-lived intangibles . other income ( expense ) other expense , net decreased $ 5.2 million from $ 29.4 million for the year ended december 30 , 2013 to $ 24.2 million for year ended december 29 , 2014. the decrease in other expense , net was primarily due to the absence of a $ 10.7 million loss on the extinguishment of debt related to repurchase of a portion of convertible senior notes due 2015 for the year ended december 30 , 2013 , offset by an increase in foreign currency transaction and derivative losses of $ 5.5 million , which includes a $ 3.6 million foreign currency transaction and derivative loss recognized in the first quarter of 2014 primarily due to the rapid depreciation of the rmb against the u.s. dollar . other expense , net increased $ 3.0 million from $ 26.4 million for year ended december 31 ,

liquidity and capital resources our principal sources of liquidity have been cash provided by operations , the issuance of convertible senior notes , and term and revolving debt . our principal uses of cash have been to finance capital expenditures , meet debt service requirements , fund working capital requirements , finance acquisitions , and refinance existing debt . we anticipate that financing acquisitions , servicing debt , financing capital expenditures , and funding working capital requirements , will continue to be the principal demands on our cash in the future . as of december 29 , 2014 , we had net working capital of approximately $ 302.1 million compared to $ 347.0 million as of december 30 , 2013. this decrease in working capital is primarily attributable to the payment of debt obligations and the reclassification of our convertible notes due in 2015 from long-term to current . as of december 29 , 2014 , we had cash and cash equivalents of approximately $ 279.0 million , of which approximately $ 82.1 million was held by our foreign subsidiaries . of the cash and cash equivalents held by our foreign subsidiaries as of december 29 , 2014 , $ 79.1 million was located in asia and $ 3.0 million was located in europe . cash and cash equivalents located in our asia pacific operating segment are expected to be used in local operations . cash and cash equivalents located in our backplane assembly facility in shanghai , china , as well as in europe , which are managed in conjunction with our u.s. operations , totaled approximately $ 13.2 million and are available for repatriation and a deferred tax liability for u.s. income taxes on undistributed earnings has been recorded . our 2015 capital expenditure plan is expected to total approximately $ 100 million ( of which approximately $ 80 million relates to our asia pacific operating segment ) . the expenditures will fund capital equipment purchases to increase production capacity , especially for advanced technology manufacturing , comply with increased environmental regulations , replace aging equipment , and expand our technological capabilities .


 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 our principal sources of liquidity have been cash provided by operations , the issuance of convertible senior notes , and term and revolving debt . our principal uses of cash have been to finance capital expenditures , meet debt service requirements , fund working capital requirements , finance acquisitions , and refinance existing debt . we anticipate that financing acquisitions , servicing debt , financing capital expenditures , and funding working capital requirements , will continue to be the principal demands on our cash in the future . as of december 29 , 2014 , we had net working capital of approximately $ 302.1 million compared to $ 347.0 million as of december 30 , 2013. this decrease in working capital is primarily attributable to the payment of debt obligations and the reclassification of our convertible notes due in 2015 from long-term to current . as of december 29 , 2014 , we had cash and cash equivalents of approximately $ 279.0 million , of which approximately $ 82.1 million was held by our foreign subsidiaries . of the cash and cash equivalents held by our foreign subsidiaries as of december 29 , 2014 , $ 79.1 million was located in asia and $ 3.0 million was located in europe . cash and cash equivalents located in our asia pacific operating segment are expected to be used in local operations . cash and cash equivalents located in our backplane assembly facility in shanghai , china , as well as in europe , which are managed in conjunction with our u.s. operations , totaled approximately $ 13.2 million and are available for repatriation and a deferred tax liability for u.s. income taxes on undistributed earnings has been recorded . our 2015 capital expenditure plan is expected to total approximately $ 100 million ( of which approximately $ 80 million relates to our asia pacific operating segment ) . the expenditures will fund capital equipment purchases to increase production capacity , especially for advanced technology manufacturing , comply with increased environmental regulations , replace aging equipment , and expand our technological capabilities .
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 Suspicious Activity Report : during the year ended december 29 , 2014 , we experienced a decline in gross and operating margins in our asia pacific operating segment resulting from the underutilization of certain advanced technology production facilities and an unexpected power outage . we experienced underutilization in the first and second quarters of 2014 caused by an increase in capacity to service an expected higher level of business which did not materialize . additionally , in the third quarter of 2014 , we experienced a 5 day production shut down due to an unexpected 43 power outage at one of our advanced technology production facilities which negatively impacted our productivity and yield improvement efforts as we were launching new products and significantly ramping for increased volumes . although we believe these to be unique challenges , we may experience similar challenges in the future which could negatively impact gross margins . while our customers include both oems and ems providers , we measure customers based on oem companies as they are the ultimate end customers . sales to our 5 largest customers accounted for 44 % , 41 % and 33 % of our net sales in 2014 , 2013 and 2012 , respectively . we sell to oems both directly and indirectly through ems providers . the following table shows the percentage of our net sales attributable to each of the principal end markets we served for the periods indicated : replace_table_token_9_th ( 1 ) sales to ems companies are classified by the end markets of their oem customers . ( 2 ) certain reclassifications of prior year end market percentages have been made to conform to the current year presentation . beginning in the first quarter of 2013 , we reclassified substrate pcbs , which were included in the other end market , into the end markets that the substrate pcbs are sold into  predominantly cellular phone . ( 3 ) smartphones are included in the cellular phone end market , touchscreen tablets are included in the computing/storage/peripherals end market and other mobile devices such as e-readers are included in the other end market . purchase orders may be cancelled prior to shipment . we charge customers a fee , based on percentage completed , if an order is cancelled once it has entered production . we derive revenues primarily from the sale of pcbs and backplane assemblies using customer-supplied engineering and design plans . we recognize revenues when persuasive evidence of a sales arrangement exists , the sales terms are fixed or determinable , title and risk of loss have transferred , and collectability is reasonably assured  generally when products are shipped to the customer . net sales consist of gross sales less an allowance for returns , which typically have been less than 3 % of gross sales . we provide our customers a limited right of return for defective pcbs and backplane assemblies . we record an estimate for sales returns and allowances at the time of sale based on historical results . cost of goods sold consists of materials , labor , outside services , and overhead expenses incurred in the manufacture and testing of our products . many factors affect our gross margin , including capacity utilization , product mix , production volume , and yield . we generally do not participate in any significant long-term contracts with suppliers , and we believe there are a number of potential suppliers for the raw materials we use . selling and marketing expenses consist primarily of salaries , labor related benefits , and commissions paid to our internal sales force , independent sales representatives , and our sales support staff , as well as costs associated with marketing materials and trade shows . general and administrative costs primarily include the salaries for executive , finance , accounting , information technology , facilities and human resources personnel , discretionary meals for employees in asia , as well as insurance expenses , expenses for accounting and legal assistance , incentive compensation expense , and gains or losses on the sale or disposal of property , plant and equipment . 44 critical accounting policies and estimates our consolidated financial statements included in this report have been prepared in accordance with accounting principles generally accepted in the united states of america . the preparation of these financial statements requires us to make estimates and assumptions that affect the reported amounts of assets , liabilities , net sales and expenses , and related disclosure of contingent assets and liabilities . a critical accounting policy is defined as one that is both material to the presentation of our consolidated financial statements and requires us to make judgments that could have a material effect on our financial condition or results of operations . these policies require us to make assumptions about matters that are highly uncertain at the time of the estimate . different estimates we could reasonably have used , or changes in the estimates that are reasonably likely to occur , or could have a material effect on our financial condition or results of operations . 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 values of assets and liabilities that are not readily apparent from other sources . management has discussed the development , selection and disclosure of these estimates with the audit committee of our board of directors . actual results may differ from these estimates under different assumptions or conditions . our critical accounting policies include asset valuation related to bad debts and inventory ; sales returns and allowances ; impairment of long-lived assets , including goodwill and intangible assets ; derivative instruments and hedging activities ; realizability of deferred tax assets ; and determining self-insurance reserves . story_separator_special_tag overall gross margin decreased from 16.7 % for the year ended december 31 , 2012 to 15.9 % for the year ended december 30 , 2013. gross margin for the asia pacific segment decreased from 15.8 % for the year ended december 31 , 2012 to 15.5 % for the year ended december 30 , 2013 primarily due to a specific product warranty claim amounting to $ 8.0 million , increased equipment related expenses , and higher labor costs . gross margin for the north america segment decreased from 18.2 % for the year ended december 31 , 2012 to 16.6 % for the year ended december 30 , 2013 , primarily due to higher direct material content , labor costs and incentive compensation expense . selling and marketing expenses selling and marketing expenses decreased $ 0.2 million , or 0.5 % , from $ 37.1 million for the year ended december 30 , 2013 to $ 36.9 million for the year ended december 29 , 2014. as a percentage of net sales , selling and marketing expenses were 2.7 % and 2.8 % for the years ended december 30 , 2013 and december 29 , 2014 , respectively . the decrease in selling and marketing expenses for the year ended december 29 , 2014 , was primarily due to reduced commissions and lower travel expenses over the comparable periods of the prior year . additionally , the increase in selling and marketing expense as a percentage of net sales for the year ended december 29 , 2014 was primarily due to lower net sales . selling and marketing expenses increased $ 1.1 million , or 3.1 % , from $ 36.0 million for the year ended december 31 , 2012 to $ 37.1 million for the year ended december 30 , 2013. the increase in selling and marketing expenses was primarily due to an increase in labor costs and stock-based compensation expense . as a percentage of net sales , selling and marketing expenses were 2.7 % for both of the years ended december 31 , 2012 and december 30 , 2013. general and administrative expenses general and administrative expenses decreased $ 4.9 million from $ 105.9 million , or 7.7 % of net sales , for the year ended december 30 , 2013 to $ 101.0 million , or 7.6 % of net sales , for the year ended december 29 , 2014. the decrease in general and administrative expense for the year ended december 29 , 2014 is primarily due to costs savings resulting from the sale of our controlling equity interest in a subsidiary in the asia pacific operating segment and lower incentive compensation expense , offset by the $ 6.0 million of acquisition-related costs recorded in the third and fourth quarters of 2014. general and administrative expenses increased $ 7.9 million from $ 98.0 million , or 7.3 % of net sales , for the year ended december 31 , 2012 to $ 105.9 million , or 7.7 % of net sales , for the year ended december 30 , 2013. the increase in expense primarily relates to an increase in incentive compensation expense as well as increased labor costs , partially offset by lower stock-based compensation expense . impairment of long-lived assets and restructuring charges for the year ended december 29 , 2014 and december 30 , 2013 , in conjunction with the shutdown of the suzhou , china facility , we recorded charges of $ 1.8 million and $ 10.8 million , respectively , primarily arising from the impairment of certain machinery and equipment . additionally , in conjunction with the shutdown , we recorded restructuring charges of $ 3.4 million during the year ended december 30 , 2013 , consisting of separation costs associated with the layoff of 774 employees . during the year ended december 31 , 2012 , we recorded an impairment charge in the asia pacific operating segment in the amount of $ 18.1 million . this impairment charge related specifically to two real estate assets for which there was expected underutilization and limited market demand . 50 if forecasts and assumptions used to support the realizability of our long-lived assets change in the future , significant impairment charges could result that would adversely affect our results of operations and financial condition . impairment of goodwill and definite-lived intangibles during the year ended december 31 , 2012 , we performed an interim evaluation of goodwill and definite-lived intangibles as we believed there were impairment triggering events and circumstances that warranted an evaluation . these circumstances included continued decreases in operating profit due to softer revenues and shifts in product mix when compared with projected results . these factors led to weaker than expected performance for the year ended december 31 , 2012. as a result , we recorded a charge for the impairment of goodwill and definite-lived intangibles in the amount of $ 200.3 million for the year ended december 31 , 2012 , consisting of charges of $ 171.4 million for goodwill and $ 28.9 million for definite-lived intangibles . other income ( expense ) other expense , net decreased $ 5.2 million from $ 29.4 million for the year ended december 30 , 2013 to $ 24.2 million for year ended december 29 , 2014. the decrease in other expense , net was primarily due to the absence of a $ 10.7 million loss on the extinguishment of debt related to repurchase of a portion of convertible senior notes due 2015 for the year ended december 30 , 2013 , offset by an increase in foreign currency transaction and derivative losses of $ 5.5 million , which includes a $ 3.6 million foreign currency transaction and derivative loss recognized in the first quarter of 2014 primarily due to the rapid depreciation of the rmb against the u.s. dollar . other expense , net increased $ 3.0 million from $ 26.4 million for year ended december 31 ,

