products shipped to asia accounted for 82 % , 84 % and 81 % of net revenue during the years ended december 31 , 2020 , 2019 and 2018 , respectively , including for 42 % , 46 % , and 43 % , respectively , from products shipped to hong kong and 17 % , 14 % and 19 % , respectively , from products shipped to china . although a large percentage of our products is shipped to asia , we believe that a significant number of the systems designed by these customers and incorporating our semiconductor products are then sold outside asia . for example , revenue generated from sales of our cable modem products during the years ended december 31 , 2020 , 2019 and 2018 related principally to sales to asian odms and contract manufacturers delivering products into european and north american markets . to date , all of our sales have been denominated in united states dollars . a significant portion of our net revenue has historically been generated by a limited number of customers . sales to customers comprise both direct sales to customers and indirect sales through distributors . in the year ended december 31 , 2020 , two of our direct customers accounted for 28 % of our net revenue , and our ten largest customers collectively accounted for 68 % of our net revenue , of which distributor customers comprised 41 % of our net revenue . in the year ended december 31 , 2019 , one of our direct customers , commscope , accounted for 14 % of our net revenue , and our ten largest customers collectively accounted for 63 % of our net revenue , of which distributor customers comprised 38 % of our net revenue . in the year ended december 31 , 2018 , commscope accounted for 18 % of our net revenue , and our ten largest customers collectively accounted for 61 % of our net revenue , of which distributor customers comprised 29 % of our net revenue . for certain customers , we sell multiple products into disparate end user applications such as cable modems , satellite set-top boxes and broadband gateways . our business depends on winning competitive bid selection processes , known as design wins , to develop semiconductors for use in our customers ' products . these selection processes are typically lengthy , and as a result , our sales cycles will vary based on the specific market served , whether the design win is with an existing or a new customer and whether our product being designed in our customer 's device is a first generation or subsequent generation product . our customers ' products can be complex and , if our engagement results in a design win , can require significant time to define , design and result in volume production . because the sales cycle for our products is long , we can incur significant design and development expenditures in circumstances where we do not ultimately recognize any revenue . we do not have any long-term purchase commitments with any of our customers , all of whom purchase our products on a purchase order basis . once one of our products is incorporated into a customer 's design , however , we believe that our product is likely to remain a component of the customer 's product for its life cycle because of the time and expense associated with redesigning the product or substituting an alternative chip . product life cycles in our target markets will vary by application . for example , in the cable operator modem and gateway sectors , a design-in can have a product life cycle of 24 to 48 months . in the industrial and wired and wireless infrastructure markets , a design-in can have a product life cycle of 24 to 60 months and beyond . impact of covid-19 in late january 2020 and early february 2020 , in response to a severe outbreak of the novel coronavirus disease , or covid-19 , the government of china instituted mandatory quarantines in wuhan , china , extended lunar new year holiday closures , and restricted shipments out of the country . this resulted in a temporary delay in our product shipments in the first quarter of 2020. on march 11 , 2020 , the world health organization declared a global pandemic regarding covid-19 . the covid-19 pandemic has reached all of the countries and states in which we operate , including in california where our headquarters and central engineering team are located , as well as massachusetts , spain , india , singapore , taiwan , canada , france , japan , south korea , hong kong , israel , germany , and austria , where additional engineering , sales , and administrative personnel are located . in many of these jurisdictions , local authorities have instituted stay-at-home or shelter-in-place orders . to protect the health and safety of our employees , we adopted social distancing policies including suspending employee travel and implementing remote work arrangements for substantially all of our workforce worldwide . as of december 31 , 2020 , some of our workforce has returned to the office at a reduced capacity adhering to local health authority guidelines . while we experienced some negative impact to our net revenue and gross profits in the first half of 2020 due to several industry-wide dynamics related to covid-19 , including the supply constraints described above , as well as certain customer order push-out requests , we are currently benefiting from the work-from-home environment that is driving an increase in demand for certain of our products . further , global financial markets reacted negatively to the covid-19 pandemic 's impacts causing significant declines in the stock price and market capitalization of many companies across all industries , although some have recovered . story_separator_special_tag technologies acquired or licensed from other companies , customer relationships , noncompete covenants , backlog , and trademarks and tradenames are capitalized and amortized over the lesser of the terms of the agreement , or estimated useful life . we capitalize ipr & d projects acquired as part of a business combination . on completion of each project , ipr & d assets are reclassified to developed technology and amortized over their estimated useful lives . impairment of goodwill and long-lived assets goodwill is not amortized but is tested for impairment using either a qualitative assessment , and or quantitative assessment , which effective with our october 31 , 2020 impairment test , is based on comparing the fair value of a reporting unit with its carrying amount . if the carrying amount of a reporting unit exceeds its fair value , a goodwill impairment loss is recorded . we test by reporting unit , goodwill and other indefinite-lived intangible assets for impairment at october 31 each year or more frequently if we believe indicators of impairment exist . during development , ipr & d is not subject to amortization and is tested for impairment annually or more frequently if events or changes in circumstances indicate that the asset might be impaired . we review indefinite-lived intangible assets each year for impairment using a qualitative assessment , followed by a quantitative assessment , as needed , each year as of october 31 , the date of our annual goodwill impairment review , or whenever events or changes in circumstances indicate the carrying value may not be recoverable . recoverability of indefinite-lived intangible assets is measured by comparing the carrying amount of the asset to its fair value . in certain cases , we utilize the relief-from-royalty method when appropriate , and a fair value will be obtained based on analysis over the costs saved by owning the right instead of leasing it . once an ipr & d project is complete , it becomes a finite-lived intangible asset and is evaluated for impairment both immediately prior to its change in classification and thereafter in accordance with our policy for long-lived assets . we regularly review the carrying amount of our long-lived assets subject to depreciation and amortization , as well as the useful lives , to determine whether indicators of impairment may exist which warrant adjustments to carrying values or estimated useful lives . an impairment loss would be recognized when the sum of the expected future undiscounted net cash flows is less than the carrying amount of the asset . should impairment exist , the impairment loss would be measured based on the excess of the carrying amount of the asset over the asset 's fair value . income taxes we provide for income taxes utilizing the asset and liability approach of accounting for income taxes . under this approach , deferred taxes represent the future tax consequences expected to occur when the reported amounts of assets and liabilities are recovered or paid . deferred taxes are presented net as noncurrent . the provision for income taxes generally represents income taxes paid or payable for the current year plus the change in deferred taxes during the year . deferred taxes result from the differences between the financial and tax bases of our assets and liabilities and are adjusted for changes in tax rates and tax laws when changes are enacted . valuation allowances are recorded to reduce deferred tax assets when a judgment is made that is considered more likely than not that a tax benefit will not be realized . a decision to record a valuation allowance results in an increase in income tax expense or a decrease in income tax benefit . if the valuation allowance is released in a future period , income tax expense will be reduced accordingly . the calculation of tax liabilities involves dealing with uncertainties in the application of complex global tax regulations . the impact of an uncertain income tax position is recognized at the largest amount that is “ more likely than not ” to be sustained upon audit by the relevant taxing authority . an uncertain income tax position will not be recognized if it has less than a 50 % likelihood of being sustained . if the estimate of tax liabilities proves to be less than the ultimate assessment , a further charge to expense would result . in assessing the realizability of deferred tax assets , management considers whether it is more likely than not that some portion or all of the deferred tax assets will be realized . the ultimate realization of deferred tax assets is dependent upon the generation of future taxable income during the periods in which those temporary differences become deductible . we continue to assess the need for a valuation allowance on the deferred tax asset by evaluating both positive and negative evidence that may 50 exist . any adjustment to the net deferred tax asset valuation allowance would be recorded in the income statement for the period that the adjustment is determined to be required . on december 22 , 2017 , the tax cuts and jobs act , or the tax act , was enacted into u.s. tax law . in 2018 , we made an accounting policy election to treat global intangible low taxed income in accordance with the tax act as a period cost . stock-based compensation we measure the cost of employee services received in exchange for equity incentive awards , including restricted stock units and restricted stock awards , employee stock purchase rights and stock options , based on the grant date fair value of the award . we calculate the fair value of restricted stock units and performance-based restricted stock units based on the fair market value of our common stock on the grant date . stock-based compensation expense is then determined based on the number of restricted stock units that are expected to vest

cash flows from operating activities net cash provided by operating activities was $ 73.6 million for the year ended december 31 , 2020. net cash provided by operating activities primarily consisted of the positive impact from $ 162.5 million in non-cash items and $ 28.9 million in changes in operating assets and liabilities , partially offset by the negative impact of net loss of $ 98.6 million and deferred income taxes and excess tax benefits totaling $ 19.2 million . non-cash items included in net loss for the year ended december 31 , 2020 primarily consisted of depreciation and amortization of property , equipment , acquired intangible assets and leased right-of-use assets of $ 76.5 million , stock-based compensation of $ 47.6 million , and inventory fair value adjustments of $ 32.9 million . 58 net cash provided by operating activities was $ 78.3 million for the year ended december 31 , 2019. net cash provided by operating activities consisted of positive cash flow from operations including $ 101.1 million in non-cash operating expenses and $ 16.9 million in changes in operating assets and liabilities , partially offset by net loss of $ 19.9 million and deferred income taxes and excess tax benefits from stock-based compensation of $ 19.8 million . non-cash items included in net loss for the year ended december 31 , 2019 primarily included depreciation and amortization of property , equipment and intangible assets and leased right-of-use assets of $ 66.4 million , stock-based compensation of $ 32.1 million . during the year ended december 31 , 2019 , we also exited certain leased facilities , which resulted in impairment of leased right-of-use assets of $ 9.2 million and leasehold impairments of $ 1.4 million , which was partially offset by a gain on extinguishment of related lease liabilities of $ 10.4 million , all of which are non-cash items that did not affect cash flows .


 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 $ 73.6 million for the year ended december 31 , 2020. net cash provided by operating activities primarily consisted of the positive impact from $ 162.5 million in non-cash items and $ 28.9 million in changes in operating assets and liabilities , partially offset by the negative impact of net loss of $ 98.6 million and deferred income taxes and excess tax benefits totaling $ 19.2 million . non-cash items included in net loss for the year ended december 31 , 2020 primarily consisted of depreciation and amortization of property , equipment , acquired intangible assets and leased right-of-use assets of $ 76.5 million , stock-based compensation of $ 47.6 million , and inventory fair value adjustments of $ 32.9 million . 58 net cash provided by operating activities was $ 78.3 million for the year ended december 31 , 2019. net cash provided by operating activities consisted of positive cash flow from operations including $ 101.1 million in non-cash operating expenses and $ 16.9 million in changes in operating assets and liabilities , partially offset by net loss of $ 19.9 million and deferred income taxes and excess tax benefits from stock-based compensation of $ 19.8 million . non-cash items included in net loss for the year ended december 31 , 2019 primarily included depreciation and amortization of property , equipment and intangible assets and leased right-of-use assets of $ 66.4 million , stock-based compensation of $ 32.1 million . during the year ended december 31 , 2019 , we also exited certain leased facilities , which resulted in impairment of leased right-of-use assets of $ 9.2 million and leasehold impairments of $ 1.4 million , which was partially offset by a gain on extinguishment of related lease liabilities of $ 10.4 million , all of which are non-cash items that did not affect cash flows .
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 Suspicious Activity Report : products shipped to asia accounted for 82 % , 84 % and 81 % of net revenue during the years ended december 31 , 2020 , 2019 and 2018 , respectively , including for 42 % , 46 % , and 43 % , respectively , from products shipped to hong kong and 17 % , 14 % and 19 % , respectively , from products shipped to china . although a large percentage of our products is shipped to asia , we believe that a significant number of the systems designed by these customers and incorporating our semiconductor products are then sold outside asia . for example , revenue generated from sales of our cable modem products during the years ended december 31 , 2020 , 2019 and 2018 related principally to sales to asian odms and contract manufacturers delivering products into european and north american markets . to date , all of our sales have been denominated in united states dollars . a significant portion of our net revenue has historically been generated by a limited number of customers . sales to customers comprise both direct sales to customers and indirect sales through distributors . in the year ended december 31 , 2020 , two of our direct customers accounted for 28 % of our net revenue , and our ten largest customers collectively accounted for 68 % of our net revenue , of which distributor customers comprised 41 % of our net revenue . in the year ended december 31 , 2019 , one of our direct customers , commscope , accounted for 14 % of our net revenue , and our ten largest customers collectively accounted for 63 % of our net revenue , of which distributor customers comprised 38 % of our net revenue . in the year ended december 31 , 2018 , commscope accounted for 18 % of our net revenue , and our ten largest customers collectively accounted for 61 % of our net revenue , of which distributor customers comprised 29 % of our net revenue . for certain customers , we sell multiple products into disparate end user applications such as cable modems , satellite set-top boxes and broadband gateways . our business depends on winning competitive bid selection processes , known as design wins , to develop semiconductors for use in our customers ' products . these selection processes are typically lengthy , and as a result , our sales cycles will vary based on the specific market served , whether the design win is with an existing or a new customer and whether our product being designed in our customer 's device is a first generation or subsequent generation product . our customers ' products can be complex and , if our engagement results in a design win , can require significant time to define , design and result in volume production . because the sales cycle for our products is long , we can incur significant design and development expenditures in circumstances where we do not ultimately recognize any revenue . we do not have any long-term purchase commitments with any of our customers , all of whom purchase our products on a purchase order basis . once one of our products is incorporated into a customer 's design , however , we believe that our product is likely to remain a component of the customer 's product for its life cycle because of the time and expense associated with redesigning the product or substituting an alternative chip . product life cycles in our target markets will vary by application . for example , in the cable operator modem and gateway sectors , a design-in can have a product life cycle of 24 to 48 months . in the industrial and wired and wireless infrastructure markets , a design-in can have a product life cycle of 24 to 60 months and beyond . impact of covid-19 in late january 2020 and early february 2020 , in response to a severe outbreak of the novel coronavirus disease , or covid-19 , the government of china instituted mandatory quarantines in wuhan , china , extended lunar new year holiday closures , and restricted shipments out of the country . this resulted in a temporary delay in our product shipments in the first quarter of 2020. on march 11 , 2020 , the world health organization declared a global pandemic regarding covid-19 . the covid-19 pandemic has reached all of the countries and states in which we operate , including in california where our headquarters and central engineering team are located , as well as massachusetts , spain , india , singapore , taiwan , canada , france , japan , south korea , hong kong , israel , germany , and austria , where additional engineering , sales , and administrative personnel are located . in many of these jurisdictions , local authorities have instituted stay-at-home or shelter-in-place orders . to protect the health and safety of our employees , we adopted social distancing policies including suspending employee travel and implementing remote work arrangements for substantially all of our workforce worldwide . as of december 31 , 2020 , some of our workforce has returned to the office at a reduced capacity adhering to local health authority guidelines . while we experienced some negative impact to our net revenue and gross profits in the first half of 2020 due to several industry-wide dynamics related to covid-19 , including the supply constraints described above , as well as certain customer order push-out requests , we are currently benefiting from the work-from-home environment that is driving an increase in demand for certain of our products . further , global financial markets reacted negatively to the covid-19 pandemic 's impacts causing significant declines in the stock price and market capitalization of many companies across all industries , although some have recovered . story_separator_special_tag technologies acquired or licensed from other companies , customer relationships , noncompete covenants , backlog , and trademarks and tradenames are capitalized and amortized over the lesser of the terms of the agreement , or estimated useful life . we capitalize ipr & d projects acquired as part of a business combination . on completion of each project , ipr & d assets are reclassified to developed technology and amortized over their estimated useful lives . impairment of goodwill and long-lived assets goodwill is not amortized but is tested for impairment using either a qualitative assessment , and or quantitative assessment , which effective with our october 31 , 2020 impairment test , is based on comparing the fair value of a reporting unit with its carrying amount . if the carrying amount of a reporting unit exceeds its fair value , a goodwill impairment loss is recorded . we test by reporting unit , goodwill and other indefinite-lived intangible assets for impairment at october 31 each year or more frequently if we believe indicators of impairment exist . during development , ipr & d is not subject to amortization and is tested for impairment annually or more frequently if events or changes in circumstances indicate that the asset might be impaired . we review indefinite-lived intangible assets each year for impairment using a qualitative assessment , followed by a quantitative assessment , as needed , each year as of october 31 , the date of our annual goodwill impairment review , or whenever events or changes in circumstances indicate the carrying value may not be recoverable . recoverability of indefinite-lived intangible assets is measured by comparing the carrying amount of the asset to its fair value . in certain cases , we utilize the relief-from-royalty method when appropriate , and a fair value will be obtained based on analysis over the costs saved by owning the right instead of leasing it . once an ipr & d project is complete , it becomes a finite-lived intangible asset and is evaluated for impairment both immediately prior to its change in classification and thereafter in accordance with our policy for long-lived assets . we regularly review the carrying amount of our long-lived assets subject to depreciation and amortization , as well as the useful lives , to determine whether indicators of impairment may exist which warrant adjustments to carrying values or estimated useful lives . an impairment loss would be recognized when the sum of the expected future undiscounted net cash flows is less than the carrying amount of the asset . should impairment exist , the impairment loss would be measured based on the excess of the carrying amount of the asset over the asset 's fair value . income taxes we provide for income taxes utilizing the asset and liability approach of accounting for income taxes . under this approach , deferred taxes represent the future tax consequences expected to occur when the reported amounts of assets and liabilities are recovered or paid . deferred taxes are presented net as noncurrent . the provision for income taxes generally represents income taxes paid or payable for the current year plus the change in deferred taxes during the year . deferred taxes result from the differences between the financial and tax bases of our assets and liabilities and are adjusted for changes in tax rates and tax laws when changes are enacted . valuation allowances are recorded to reduce deferred tax assets when a judgment is made that is considered more likely than not that a tax benefit will not be realized . a decision to record a valuation allowance results in an increase in income tax expense or a decrease in income tax benefit . if the valuation allowance is released in a future period , income tax expense will be reduced accordingly . the calculation of tax liabilities involves dealing with uncertainties in the application of complex global tax regulations . the impact of an uncertain income tax position is recognized at the largest amount that is “ more likely than not ” to be sustained upon audit by the relevant taxing authority . an uncertain income tax position will not be recognized if it has less than a 50 % likelihood of being sustained . if the estimate of tax liabilities proves to be less than the ultimate assessment , a further charge to expense would result . in assessing the realizability of deferred tax assets , management considers whether it is more likely than not that some portion or all of the deferred tax assets will be realized . the ultimate realization of deferred tax assets is dependent upon the generation of future taxable income during the periods in which those temporary differences become deductible . we continue to assess the need for a valuation allowance on the deferred tax asset by evaluating both positive and negative evidence that may 50 exist . any adjustment to the net deferred tax asset valuation allowance would be recorded in the income statement for the period that the adjustment is determined to be required . on december 22 , 2017 , the tax cuts and jobs act , or the tax act , was enacted into u.s. tax law . in 2018 , we made an accounting policy election to treat global intangible low taxed income in accordance with the tax act as a period cost . stock-based compensation we measure the cost of employee services received in exchange for equity incentive awards , including restricted stock units and restricted stock awards , employee stock purchase rights and stock options , based on the grant date fair value of the award . we calculate the fair value of restricted stock units and performance-based restricted stock units based on the fair market value of our common stock on the grant date . stock-based compensation expense is then determined based on the number of restricted stock units that are expected to vest

