on september 27 , 2016 , we issued new $ 775.0 million term b loans ( term loan b ) at an interest rate of libor , with a 1.0 % libor floor , plus 4.25 % , a reduction of 75 basis points from the previous term loan credit agreement ( term loan ) , and repaid in full the remaining outstanding balance of the term loan . this transaction was accounted for as an extinguishment of debt and accordingly , we recognized a loss of $ 47.8 million primarily associated with the write off of the remaining unamortized debt discount and issuance costs . 42 additionally , on september 27 , 2016 , we amended our u.s. asset-based lending credit agreement ( u.s. abl ) to increase the amount available to $ 200.0 million , reduce the applicable margin by 25 basis points for both eurodollar loans and abr loans , and reduce the letters of credit facilities to $ 50 million . on december 22 , 2016 , we amended our asia asset-based lending credit agreement ( asia abl ) to reduce the interest margin by 35 basis points . during the year ended january 2 , 2017 , we made net debt principal payments totaling $ 217.6 million , representing normally scheduled principal payments as well as additional prepayments of principal . financial overview for the fiscal year 2016 , we experienced higher demand in our automotive and aerospace and defense end markets and additional sales from the full year contribution of viasystems compared to that of fiscal year 2015. this increase in sales resulted in higher capacity utilization at our automotive focused facilities resulting in higher gross margins . additionally , we have improved operating efficiencies at certain of our north american plants . we operate on a 52 or 53 week year ending on the monday nearest december 31. fiscal 2016 consisted of 53 weeks ended on january 2 , 2017 with the additional week included in the fourth quarter . we estimate the additional week contributed approximately $ 29.2 million of additional revenue and approximately $ 1.1 million of additional operating income for the year ended january 2 , 2017. fiscal year 2015 and 2014 were 52 weeks ended december 28 , 2015 and december 29 , 2014 , respectively . 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 five largest customers accounted for 33 % , 37 % and 44 % of our net sales in fiscal years 2016 , 2015 and 2014 , 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 2015 , automotive has been reclassified from the other end market . ( 3 ) smartphones are included in the cellular phone end market , 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 . ( 4 ) amounts includes 211 days of activity of viasystems , which we acquired on may 31 , 2015. we derive revenues primarily from the sale of pcbs and custom electronic 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 43 allowances at the time of sale based on historical results . purchase orders may be cancelled prior to shipment . we generally charge customers a fee , based on the percentage completed , if an order is cancelled once it has entered production . cost of goods sold consists of materials , labor , outside services , and overhead expenses incurred in the manufacture and testing of our products . shipping and handling fees and related freight costs and supplies associated with shipping products are also included as a component of cost of goods sold . 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 , as well as expenses for accounting and legal assistance , incentive compensation expense , and gains or losses on the sale or disposal of property , plant and equipment . 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 . story_separator_special_tag 48 overall gross margin increased from 14.7 % for the year ended december 29 , 2014 to 14.8 % for the year ended december 28 , 2015. gross margin for the pcb operating segment increased from 15.0 % for the year ended december 29 , 2014 to 15.5 % for the year ended december 28 , 2015 primarily due to higher utilization at our advanced technology plants , partially offset by the acquisition of viasystems with lower margins than our existing business and $ 13.3 million of increased costs due to the fair value mark up of acquired inventory associated with the acquisition of viasystems . gross margin for the e-m solutions operating segment decreased from 9.4 % for the year ended december 29 , 2014 to 6.6 % for the year ended december 28 , 2015 primarily due to the acquisition of viasystems . selling and marketing expenses selling and marketing expenses increased $ 9.0 million from $ 57.4 million for the year ended december 28 , 2015 to $ 66.4 million for the year ended january 2 , 2017. additionally , selling and marketing expenses increased $ 20.5 million , from $ 36.9 million for the year ended december 29 , 2014 to $ 57.4 million for the year ended december 28 , 2015. the increase in selling and marketing expense for the years ended january 2 , 2017 and december 28 , 2015 primarily related to additional selling and marketing activities resulting from the acquisition of viasystems . as a percentage of net sales , selling and marketing expenses were 2.6 % for the year ended january 2 , 2017 , as compared to 2.7 % for the year ended december 28 , 2015 , and 2.8 % for the year ended december 29 , 2014. the decrease in selling and marketing expense as a percentage of net sales for the periods noted was primarily due to higher net sales . general and administrative expenses general and administrative expenses decreased $ 20.5 million from $ 167.7 million , or 8.0 % of net sales , for the year ended december 28 , 2015 to $ 147.2 million , or 5.8 % of net sales , for the year ended january 2 , 2017. the decrease in expense primarily related to a decrease of $ 32.8 million in acquisition-related costs as compared to the year ended december 28 , 2015 , partially offset by increased expenses resulting from the acquisition of viasystems . the decrease in general and administrative expense as percentage of net sales was primarily due to the decrease in acquisition-related costs and higher net sales . general and administrative expenses increased $ 66.7 million from $ 101.0 million , or 7.6 % of net sales , for the year ended december 29 , 2014 to $ 167.7 million , or 8.0 % of net sales , for the year ended december 28 , 2015. the increase in expense was primarily due to $ 34.4 million of acquisition-related costs for the year ended december 28 , 2015 associated with the acquisition of viasystems and seven months of general and administrative expense resulting from viasystems post acquisition through december 28 , 2015. impairment of long-lived assets and restructuring charges for the years ended january 2 , 2017 and december 28 , 2015 , we incurred restructuring charges of $ 8.9 million and $ 7.4 million , respectively , related to the consolidation plan announced on september 29 , 2015 , that resulted in the closure of our facilities in cleveland , ohio , milpitas , california , and juarez , mexico and other global realignment efforts . during the year ended january 2 , 2017 , in connection with the consolidation plan , we recognized restructuring charges of $ 3.7 million , $ 4.5 million and $ 0.7 million in our pcb , e-m solutions and corporate segments , respectively . for the year ended december 28 , 2015 , we recognized restructuring charges of $ 2.0 million in both our pcb and e-m solutions segments and $ 3.4 million in our corporate segment . these charges primarily represent employee separation and contract termination and other costs associated with the consolidation plan and other global realignment restructuring efforts . as of january 2 , 2017 , the company has incurred approximately $ 16.3 million of restructuring charges since the september 29 , 2015 announcement . additionally , as a result of the above mentioned plant closures and other plant realignment efforts , we also recognized impairment charges of $ 3.3 million for the year ended january 2 , 2017 , of which $ 1.4 million were recognized in our pcb operating segment and $ 1.9 million were recognized in the corporate operating segment . the impairment charge for the pcb operating segment related to machinery and equipment while the impairment charge for the corporate operating segment related to the write-off of capitalized software costs . 49 if forecasts and assumptions used to support the realizability of our long-lived assets change in the future , significant impairment or restructuring charges could result that would adversely affect our results of operations and financial condition . other income ( expense ) other expense , net increased $ 54.1 million from $ 52.4 million for the year ended december 28 , 2015 to $ 106.5 million for the year ended january 2 , 2017. the increase in other expense , net was primarily due to the loss on extinguishment of debt of $ 47.8 million related to the full repayment of the may 31 , 2015 term loan and newly issued $ 775.0 million term b loan on september 27 , 2016. another factor contributing to the increase in other expense , net was the increase in interest expense of $ 16.2 million related to our term loan , which was paid off , and currently outstanding term loan b and abl revolving loans , compared with only seven months of

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 acquire viasystems , finance capital expenditures , meet debt service requirements , fund working capital requirements , and refinance existing debt . we anticipate that servicing debt , financing capital expenditures , financing acquisitions , and funding working capital requirements will continue to be the principal demands on our cash in the future . cash flow provided by operating activities during the year ended january 2 , 2017 was $ 298.3 million as compared to $ 237.5 million in the same period in 2015. the improved cash flow was the result of stronger 50 operational performance and the full year contribution of viasystems . as of january 2 , 2017 , we had net working capital of approximately $ 323.8 million compared to $ 277.5 million as of december 28 , 2015. at january 2 , 2017 cash cycle days improved to 43 days as compared to 49 days at december 28 , 2015. net cash used in investing activities was approximately $ 78.0 million for the year ended january 2 , 2017 primarily reflecting the purchases of property , plant and equipment of $ 85.1 million , offset by net of proceeds from sales of property , plant and equipment and assets held for sale of $ 3.6 million and the release of restricted cash to cash and cash equivalents of $ 3.5 million . net cash used in financing activities was approximately $ 217.1 million for the year ended january 2 , 2017 primarily reflecting the full repayment of the may 31 , 2015 term loan , and the repayments of normally scheduled principal payments and additional prepayments of principal of our long-term debt , which amounts totaled $ 1,022.6 million , offset by $ 775.0 million newly issued term b loan and proceeds from our asia abl revolving loan of $ 30.0 million .


 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 acquire viasystems , finance capital expenditures , meet debt service requirements , fund working capital requirements , and refinance existing debt . we anticipate that servicing debt , financing capital expenditures , financing acquisitions , and funding working capital requirements will continue to be the principal demands on our cash in the future . cash flow provided by operating activities during the year ended january 2 , 2017 was $ 298.3 million as compared to $ 237.5 million in the same period in 2015. the improved cash flow was the result of stronger 50 operational performance and the full year contribution of viasystems . as of january 2 , 2017 , we had net working capital of approximately $ 323.8 million compared to $ 277.5 million as of december 28 , 2015. at january 2 , 2017 cash cycle days improved to 43 days as compared to 49 days at december 28 , 2015. net cash used in investing activities was approximately $ 78.0 million for the year ended january 2 , 2017 primarily reflecting the purchases of property , plant and equipment of $ 85.1 million , offset by net of proceeds from sales of property , plant and equipment and assets held for sale of $ 3.6 million and the release of restricted cash to cash and cash equivalents of $ 3.5 million . net cash used in financing activities was approximately $ 217.1 million for the year ended january 2 , 2017 primarily reflecting the full repayment of the may 31 , 2015 term loan , and the repayments of normally scheduled principal payments and additional prepayments of principal of our long-term debt , which amounts totaled $ 1,022.6 million , offset by $ 775.0 million newly issued term b loan and proceeds from our asia abl revolving loan of $ 30.0 million .
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 Suspicious Activity Report : on september 27 , 2016 , we issued new $ 775.0 million term b loans ( term loan b ) at an interest rate of libor , with a 1.0 % libor floor , plus 4.25 % , a reduction of 75 basis points from the previous term loan credit agreement ( term loan ) , and repaid in full the remaining outstanding balance of the term loan . this transaction was accounted for as an extinguishment of debt and accordingly , we recognized a loss of $ 47.8 million primarily associated with the write off of the remaining unamortized debt discount and issuance costs . 42 additionally , on september 27 , 2016 , we amended our u.s. asset-based lending credit agreement ( u.s. abl ) to increase the amount available to $ 200.0 million , reduce the applicable margin by 25 basis points for both eurodollar loans and abr loans , and reduce the letters of credit facilities to $ 50 million . on december 22 , 2016 , we amended our asia asset-based lending credit agreement ( asia abl ) to reduce the interest margin by 35 basis points . during the year ended january 2 , 2017 , we made net debt principal payments totaling $ 217.6 million , representing normally scheduled principal payments as well as additional prepayments of principal . financial overview for the fiscal year 2016 , we experienced higher demand in our automotive and aerospace and defense end markets and additional sales from the full year contribution of viasystems compared to that of fiscal year 2015. this increase in sales resulted in higher capacity utilization at our automotive focused facilities resulting in higher gross margins . additionally , we have improved operating efficiencies at certain of our north american plants . we operate on a 52 or 53 week year ending on the monday nearest december 31. fiscal 2016 consisted of 53 weeks ended on january 2 , 2017 with the additional week included in the fourth quarter . we estimate the additional week contributed approximately $ 29.2 million of additional revenue and approximately $ 1.1 million of additional operating income for the year ended january 2 , 2017. fiscal year 2015 and 2014 were 52 weeks ended december 28 , 2015 and december 29 , 2014 , respectively . 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 five largest customers accounted for 33 % , 37 % and 44 % of our net sales in fiscal years 2016 , 2015 and 2014 , 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 2015 , automotive has been reclassified from the other end market . ( 3 ) smartphones are included in the cellular phone end market , 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 . ( 4 ) amounts includes 211 days of activity of viasystems , which we acquired on may 31 , 2015. we derive revenues primarily from the sale of pcbs and custom electronic 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 43 allowances at the time of sale based on historical results . purchase orders may be cancelled prior to shipment . we generally charge customers a fee , based on the percentage completed , if an order is cancelled once it has entered production . cost of goods sold consists of materials , labor , outside services , and overhead expenses incurred in the manufacture and testing of our products . shipping and handling fees and related freight costs and supplies associated with shipping products are also included as a component of cost of goods sold . 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 , as well as expenses for accounting and legal assistance , incentive compensation expense , and gains or losses on the sale or disposal of property , plant and equipment . 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 . story_separator_special_tag 48 overall gross margin increased from 14.7 % for the year ended december 29 , 2014 to 14.8 % for the year ended december 28 , 2015. gross margin for the pcb operating segment increased from 15.0 % for the year ended december 29 , 2014 to 15.5 % for the year ended december 28 , 2015 primarily due to higher utilization at our advanced technology plants , partially offset by the acquisition of viasystems with lower margins than our existing business and $ 13.3 million of increased costs due to the fair value mark up of acquired inventory associated with the acquisition of viasystems . gross margin for the e-m solutions operating segment decreased from 9.4 % for the year ended december 29 , 2014 to 6.6 % for the year ended december 28 , 2015 primarily due to the acquisition of viasystems . selling and marketing expenses selling and marketing expenses increased $ 9.0 million from $ 57.4 million for the year ended december 28 , 2015 to $ 66.4 million for the year ended january 2 , 2017. additionally , selling and marketing expenses increased $ 20.5 million , from $ 36.9 million for the year ended december 29 , 2014 to $ 57.4 million for the year ended december 28 , 2015. the increase in selling and marketing expense for the years ended january 2 , 2017 and december 28 , 2015 primarily related to additional selling and marketing activities resulting from the acquisition of viasystems . as a percentage of net sales , selling and marketing expenses were 2.6 % for the year ended january 2 , 2017 , as compared to 2.7 % for the year ended december 28 , 2015 , and 2.8 % for the year ended december 29 , 2014. the decrease in selling and marketing expense as a percentage of net sales for the periods noted was primarily due to higher net sales . general and administrative expenses general and administrative expenses decreased $ 20.5 million from $ 167.7 million , or 8.0 % of net sales , for the year ended december 28 , 2015 to $ 147.2 million , or 5.8 % of net sales , for the year ended january 2 , 2017. the decrease in expense primarily related to a decrease of $ 32.8 million in acquisition-related costs as compared to the year ended december 28 , 2015 , partially offset by increased expenses resulting from the acquisition of viasystems . the decrease in general and administrative expense as percentage of net sales was primarily due to the decrease in acquisition-related costs and higher net sales . general and administrative expenses increased $ 66.7 million from $ 101.0 million , or 7.6 % of net sales , for the year ended december 29 , 2014 to $ 167.7 million , or 8.0 % of net sales , for the year ended december 28 , 2015. the increase in expense was primarily due to $ 34.4 million of acquisition-related costs for the year ended december 28 , 2015 associated with the acquisition of viasystems and seven months of general and administrative expense resulting from viasystems post acquisition through december 28 , 2015. impairment of long-lived assets and restructuring charges for the years ended january 2 , 2017 and december 28 , 2015 , we incurred restructuring charges of $ 8.9 million and $ 7.4 million , respectively , related to the consolidation plan announced on september 29 , 2015 , that resulted in the closure of our facilities in cleveland , ohio , milpitas , california , and juarez , mexico and other global realignment efforts . during the year ended january 2 , 2017 , in connection with the consolidation plan , we recognized restructuring charges of $ 3.7 million , $ 4.5 million and $ 0.7 million in our pcb , e-m solutions and corporate segments , respectively . for the year ended december 28 , 2015 , we recognized restructuring charges of $ 2.0 million in both our pcb and e-m solutions segments and $ 3.4 million in our corporate segment . these charges primarily represent employee separation and contract termination and other costs associated with the consolidation plan and other global realignment restructuring efforts . as of january 2 , 2017 , the company has incurred approximately $ 16.3 million of restructuring charges since the september 29 , 2015 announcement . additionally , as a result of the above mentioned plant closures and other plant realignment efforts , we also recognized impairment charges of $ 3.3 million for the year ended january 2 , 2017 , of which $ 1.4 million were recognized in our pcb operating segment and $ 1.9 million were recognized in the corporate operating segment . the impairment charge for the pcb operating segment related to machinery and equipment while the impairment charge for the corporate operating segment related to the write-off of capitalized software costs . 49 if forecasts and assumptions used to support the realizability of our long-lived assets change in the future , significant impairment or restructuring charges could result that would adversely affect our results of operations and financial condition . other income ( expense ) other expense , net increased $ 54.1 million from $ 52.4 million for the year ended december 28 , 2015 to $ 106.5 million for the year ended january 2 , 2017. the increase in other expense , net was primarily due to the loss on extinguishment of debt of $ 47.8 million related to the full repayment of the may 31 , 2015 term loan and newly issued $ 775.0 million term b loan on september 27 , 2016. another factor contributing to the increase in other expense , net was the increase in interest expense of $ 16.2 million related to our term loan , which was paid off , and currently outstanding term loan b and abl revolving loans , compared with only seven months of

