online retailers include amazon.com , dell , newegg.com and buy.com . our dmrs include cdw corporation , insight corporation and pc connection in domestic markets and misco throughout europe . in addition , we also sell our products through broadband service providers , such as multiple system operators ( “ msos ” ) , dsl , and other broadband technology operators domestically and internationally . some of these retailers and broadband service providers purchase directly from us , while others are fulfilled through wholesale distributors around the world . a substantial portion of our net revenue to date has been derived from a limited number of wholesale distributors and retailers . we expect that these wholesale distributors and retailers will continue to contribute a significant percentage of our net revenue for the foreseeable future . we experienced revenue growth of 1.7 % during the year ended december 31 , 2014 . the increase in net revenue was primarily attributable to increased sales of our mobile products acquired through our acquisition of aircard and broadband gateways , partially offset by a decrease in sales of our multimedia products . on a geographic basis , net revenue increased in the apac region , driven primarily by an increase in sales of our mobile , home wireless and broadband gateway products , partially offset by a reduction in sales of our small business wireless products . net revenue increased in the emea region , driven primarily by an increase in sales of our broadband gateways , partially offset by a reduction in sales of our mobile products . net revenue decreased in the americas region , driven primarily by a reduction in sales of our home wireless , multimedia , home security and automation products and 37 switches , partially offset by an increase in sales of our mobile products . on a segment basis , service provider net revenue increased , primarily due to an increase in gross shipments of mobile products , as a result of the aircard acquisition which was completed on april 2 , 2013. retail net revenue decreased slightly , due primarily to a reduction in gross shipments of our multimedia and powerline products , partially offset by an increase in gross shipments of home wireless products and broadband gateways . commercial net revenue decreased from prior year , due primarily to a reduction in gross shipments of our network storage and wireless products , partially offset by an increase in shipments of switches . in the fourth quarter of fiscal year 2014 , we saw a decline in net revenue in the service provider reporting unit . according to our customers , purchase constraints will tighten further in 2015 and for the foreseeable future . due to the decline in the estimated fair value of the business as a result of the decline in the long-term revenue and profitability projections of the reporting unit , we recorded a goodwill impairment charge of $ 74.2 million related to the service provider business unit in the fourth quarter of fiscal year 2014. looking forward , we expect growth in retail business unit mainly driven by continued introduction and wider adoption of our new 802.11 ac technology , accelerated penetration of home security automation products and establishment in cable gateway market . we expect growth in our commercial business unit driven by sales of our 10gig switches , poe switches , storage and wireless products among small and medium-sized businesses and end users . although service provider results remained strong for the first three quarters of 2014 , we expect revenue will continue to decline due to further weakness in capital expense spending by certain service providers in both north america and in europe . we also expect to incur restructuring charges of between $ 7.0 and $ 9.0 million during the first half of 2015 , as part of a plan to reduce the cost structure of the service provider business unit and supporting functions to match the reduced revenue outlook and to concentrate resources on long-term and profitable accounts . we remain focused on improving profitability , while investing in key strategic growth areas . the areas that we are targeting continue to be mobile lte , 802.11ac , home security and automation and the under-served small and medium-sized business market . critical accounting policies and estimates our consolidated financial statements have been prepared in accordance with accounting principles generally accepted in the united states of america and pursuant to the rules and regulations of the u.s. securities and exchange commission ( `` sec `` ) . the preparation of these financial statements requires management to make assumptions , judgments and estimates that can have a significant impact on the reported amounts of assets , liabilities , revenues and expenses . we base our estimates on historical experience and on various other assumptions believed to be applicable and reasonable under the circumstances . actual results could differ significantly from these estimates . these estimates may change as new events occur , as additional information is obtained and as our operating environment changes . on a regular basis we evaluate our assumptions , judgments and estimates and make changes accordingly . we also discuss our critical accounting estimates with the audit committee of the board of directors . note 1 , the company and summary of significant accounting policies , of the notes to consolidated financial statements of this annual report on form 10-k describes the significant accounting policies used in the preparation of the consolidated financial statements . we have listed below our critical accounting policies that we believe to have the greatest potential impact on our consolidated financial statements . historically , our assumptions , judgments and estimates relative to our critical accounting policies have not differed materially from actual results . story_separator_special_tag in addition , deferred tax assets and liabilities are recognized for the expected future tax consequences of temporary differences resulting from different treatments for tax versus accounting of certain items , such as accruals and allowances not currently deductible for tax purposes . these differences result in deferred tax assets and liabilities , which are included within the consolidated balance sheet . we must then assess the likelihood that our deferred tax assets will be recovered from future taxable income and to the extent we believe that recovery is not more likely than not , we must establish a valuation allowance . our assessment considers the recognition of deferred tax assets on a jurisdictional basis . accordingly , in assessing our future taxable income on a jurisdictional basis , we consider the effect of its transfer pricing policies on that income . during the year ended december 31 , 2014 , a valuation allowance was placed against california deferred tax assets since the recovery of the assets is uncertain . we believe that all of our other deferred tax assets are recoverable ; however , if there were a change in our ability to recover our deferred tax assets , we would be required to take a charge in the period in which we determined that recovery was not more likely than not . uncertain tax provisions are recognized under guidance that provides that a company should use a more-likely-than-not recognition threshold based on the technical merits of the income tax position taken . income tax positions that meet the more-likely-than-not recognition threshold should be measured in order to determine the tax benefit to be recognized in the financial statements . we include interest expense and penalties related to uncertain tax positions as additional tax expense . 41 results of operations the following table sets forth , for the periods presented , the consolidated statements of operations data , which is derived from the accompanying consolidated financial statements : replace_table_token_8_th net revenue by geographic region our net revenue consists of gross product shipments , less allowances for estimated returns for stock rotation and warranty , price protection , end-user customer rebates and other sales incentives deemed to be a reduction of net revenue per the authoritative guidance for revenue recognition , and net changes in deferred revenue . we conduct business across three geographic regions : americas , emea and apac . for reporting purposes revenue is attributed to each geographic region based upon the location of the customer . replace_table_token_9_th 2014 vs 2013 the decrease in americas net revenue for the year ended december 31 , 2014 compared to the prior year was driven primarily by a reduction in sales of our home wireless , multimedia , home security and automation products and switches , partially offset by an increase in sales of our mobile products and broadband gateways . net revenue for mobile products increased for the year ended december 31 , 2014 as a result of the aircard acquisition which was completed on april 2 , 2013. in contrast to 2013 , the 42 positive effect of the acquisition is included in our results of the entire year ended december 31 , 2014. in our retail and distribution channels , we continue to see strong demand for our products . however , we are managing our inventory levels at our u.s. retail partners to be more aligned with historic levels , which has contributed to the decline in the americas net revenue for the year ended december 31 , 2014 compared to the prior year . the increase in emea net revenue for the year ended december 31 , 2014 compared to the prior year was driven primarily by an increase in sales of our switches and broadband gateways , partially offset by a reduction in sales of our mobile products . the increase in emea net revenue was primarily driven by sales to our service provider customers in fiscal 2014. we expect service provider revenue in emea to decrease in fiscal year 2015. these positive effects to net revenue in fiscal year 2014 were partially offset by challenges resulting from the macro-economic environment , increased competition and pricing pressures in europe , and weakening of foreign currencies compared to the u.s. dollar . the increase in apac net revenue for the year ended december 31 , 2014 compared to the prior year was driven primarily by an increase in sales of our mobile , home wireless and broadband gateway products , partially offset by a reduction in sales of our small business wireless products . net revenue for mobile products specifically increased for the year ended december 31 , 2014 as a result of the aircard acquisition which was completed on april 2 , 2013. in contrast to 2013 , the positive effect of the acquisition is included in our results for the entire year ended december 31 , 2014 . 2013 vs 2012 the increase in americas net revenue for the year ended december 31 , 2013 compared to the prior year was primarily attributable to increased sales of our mobile , home security and automation products and switches , partially offset by a decrease in sales of our broadband gateways . net revenue for mobile products increased for the year ended december 31 , 2013 as a result of the aircard acquisition which was completed in april 2 , 2013. the decrease in emea net revenue for the year ended december 31 , 2013 compared to the prior year was primarily attributable to a decrease in sales of our broadband gateways and home wireless products . net revenue for broadband gateways decreased for the year ended december 31 , 2013 due , in part , to consolidation among european cable operators in europe in the second half of the year . the increase in apac net revenue for the year ended december 31 , 2013 compared to the prior year was primarily attributable to

liquidity and capital resources as of december 31 , 2014 , we had cash , cash equivalents and short-term investments totaling $ 257.1 million . our cash and cash equivalents balance decreased from $ 143.0 million as of december 31 , 2013 to $ 141.2 million as of december 31 , 2014 . our short-term investments , which represent the investment of funds available for current operations , increased from $ 105.1 million as of december 31 , 2013 to $ 115.9 million as of december 31 , 2014 , resulting from net purchases of treasuries . operating activities during the year ended december 31 , 2014 generated cash of $ 109.0 million , compared to $ 86.9 million in 2013 , resulting primarily from an increase in net income when excluding the $ 74.2 million of non-cash goodwill impairment charge . investing activities during the year ended december 31 , 2014 used $ 30.7 million , mainly due to purchases of property and equipment , and net purchases of short-term investments . during the year ended december 31 , 2014 , financing activities used cash of $ 80.0 million , primarily due to the repurchase of common stock , partially offset by proceeds from the issuance of common stock upon exercise of stock options and our employee stock purchase program .


 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 as of december 31 , 2014 , we had cash , cash equivalents and short-term investments totaling $ 257.1 million . our cash and cash equivalents balance decreased from $ 143.0 million as of december 31 , 2013 to $ 141.2 million as of december 31 , 2014 . our short-term investments , which represent the investment of funds available for current operations , increased from $ 105.1 million as of december 31 , 2013 to $ 115.9 million as of december 31 , 2014 , resulting from net purchases of treasuries . operating activities during the year ended december 31 , 2014 generated cash of $ 109.0 million , compared to $ 86.9 million in 2013 , resulting primarily from an increase in net income when excluding the $ 74.2 million of non-cash goodwill impairment charge . investing activities during the year ended december 31 , 2014 used $ 30.7 million , mainly due to purchases of property and equipment , and net purchases of short-term investments . during the year ended december 31 , 2014 , financing activities used cash of $ 80.0 million , primarily due to the repurchase of common stock , partially offset by proceeds from the issuance of common stock upon exercise of stock options and our employee stock purchase program .
```    
 Suspicious Activity Report : online retailers include amazon.com , dell , newegg.com and buy.com . our dmrs include cdw corporation , insight corporation and pc connection in domestic markets and misco throughout europe . in addition , we also sell our products through broadband service providers , such as multiple system operators ( “ msos ” ) , dsl , and other broadband technology operators domestically and internationally . some of these retailers and broadband service providers purchase directly from us , while others are fulfilled through wholesale distributors around the world . a substantial portion of our net revenue to date has been derived from a limited number of wholesale distributors and retailers . we expect that these wholesale distributors and retailers will continue to contribute a significant percentage of our net revenue for the foreseeable future . we experienced revenue growth of 1.7 % during the year ended december 31 , 2014 . the increase in net revenue was primarily attributable to increased sales of our mobile products acquired through our acquisition of aircard and broadband gateways , partially offset by a decrease in sales of our multimedia products . on a geographic basis , net revenue increased in the apac region , driven primarily by an increase in sales of our mobile , home wireless and broadband gateway products , partially offset by a reduction in sales of our small business wireless products . net revenue increased in the emea region , driven primarily by an increase in sales of our broadband gateways , partially offset by a reduction in sales of our mobile products . net revenue decreased in the americas region , driven primarily by a reduction in sales of our home wireless , multimedia , home security and automation products and 37 switches , partially offset by an increase in sales of our mobile products . on a segment basis , service provider net revenue increased , primarily due to an increase in gross shipments of mobile products , as a result of the aircard acquisition which was completed on april 2 , 2013. retail net revenue decreased slightly , due primarily to a reduction in gross shipments of our multimedia and powerline products , partially offset by an increase in gross shipments of home wireless products and broadband gateways . commercial net revenue decreased from prior year , due primarily to a reduction in gross shipments of our network storage and wireless products , partially offset by an increase in shipments of switches . in the fourth quarter of fiscal year 2014 , we saw a decline in net revenue in the service provider reporting unit . according to our customers , purchase constraints will tighten further in 2015 and for the foreseeable future . due to the decline in the estimated fair value of the business as a result of the decline in the long-term revenue and profitability projections of the reporting unit , we recorded a goodwill impairment charge of $ 74.2 million related to the service provider business unit in the fourth quarter of fiscal year 2014. looking forward , we expect growth in retail business unit mainly driven by continued introduction and wider adoption of our new 802.11 ac technology , accelerated penetration of home security automation products and establishment in cable gateway market . we expect growth in our commercial business unit driven by sales of our 10gig switches , poe switches , storage and wireless products among small and medium-sized businesses and end users . although service provider results remained strong for the first three quarters of 2014 , we expect revenue will continue to decline due to further weakness in capital expense spending by certain service providers in both north america and in europe . we also expect to incur restructuring charges of between $ 7.0 and $ 9.0 million during the first half of 2015 , as part of a plan to reduce the cost structure of the service provider business unit and supporting functions to match the reduced revenue outlook and to concentrate resources on long-term and profitable accounts . we remain focused on improving profitability , while investing in key strategic growth areas . the areas that we are targeting continue to be mobile lte , 802.11ac , home security and automation and the under-served small and medium-sized business market . critical accounting policies and estimates our consolidated financial statements have been prepared in accordance with accounting principles generally accepted in the united states of america and pursuant to the rules and regulations of the u.s. securities and exchange commission ( `` sec `` ) . the preparation of these financial statements requires management to make assumptions , judgments and estimates that can have a significant impact on the reported amounts of assets , liabilities , revenues and expenses . we base our estimates on historical experience and on various other assumptions believed to be applicable and reasonable under the circumstances . actual results could differ significantly from these estimates . these estimates may change as new events occur , as additional information is obtained and as our operating environment changes . on a regular basis we evaluate our assumptions , judgments and estimates and make changes accordingly . we also discuss our critical accounting estimates with the audit committee of the board of directors . note 1 , the company and summary of significant accounting policies , of the notes to consolidated financial statements of this annual report on form 10-k describes the significant accounting policies used in the preparation of the consolidated financial statements . we have listed below our critical accounting policies that we believe to have the greatest potential impact on our consolidated financial statements . historically , our assumptions , judgments and estimates relative to our critical accounting policies have not differed materially from actual results . story_separator_special_tag in addition , deferred tax assets and liabilities are recognized for the expected future tax consequences of temporary differences resulting from different treatments for tax versus accounting of certain items , such as accruals and allowances not currently deductible for tax purposes . these differences result in deferred tax assets and liabilities , which are included within the consolidated balance sheet . we must then assess the likelihood that our deferred tax assets will be recovered from future taxable income and to the extent we believe that recovery is not more likely than not , we must establish a valuation allowance . our assessment considers the recognition of deferred tax assets on a jurisdictional basis . accordingly , in assessing our future taxable income on a jurisdictional basis , we consider the effect of its transfer pricing policies on that income . during the year ended december 31 , 2014 , a valuation allowance was placed against california deferred tax assets since the recovery of the assets is uncertain . we believe that all of our other deferred tax assets are recoverable ; however , if there were a change in our ability to recover our deferred tax assets , we would be required to take a charge in the period in which we determined that recovery was not more likely than not . uncertain tax provisions are recognized under guidance that provides that a company should use a more-likely-than-not recognition threshold based on the technical merits of the income tax position taken . income tax positions that meet the more-likely-than-not recognition threshold should be measured in order to determine the tax benefit to be recognized in the financial statements . we include interest expense and penalties related to uncertain tax positions as additional tax expense . 41 results of operations the following table sets forth , for the periods presented , the consolidated statements of operations data , which is derived from the accompanying consolidated financial statements : replace_table_token_8_th net revenue by geographic region our net revenue consists of gross product shipments , less allowances for estimated returns for stock rotation and warranty , price protection , end-user customer rebates and other sales incentives deemed to be a reduction of net revenue per the authoritative guidance for revenue recognition , and net changes in deferred revenue . we conduct business across three geographic regions : americas , emea and apac . for reporting purposes revenue is attributed to each geographic region based upon the location of the customer . replace_table_token_9_th 2014 vs 2013 the decrease in americas net revenue for the year ended december 31 , 2014 compared to the prior year was driven primarily by a reduction in sales of our home wireless , multimedia , home security and automation products and switches , partially offset by an increase in sales of our mobile products and broadband gateways . net revenue for mobile products increased for the year ended december 31 , 2014 as a result of the aircard acquisition which was completed on april 2 , 2013. in contrast to 2013 , the 42 positive effect of the acquisition is included in our results of the entire year ended december 31 , 2014. in our retail and distribution channels , we continue to see strong demand for our products . however , we are managing our inventory levels at our u.s. retail partners to be more aligned with historic levels , which has contributed to the decline in the americas net revenue for the year ended december 31 , 2014 compared to the prior year . the increase in emea net revenue for the year ended december 31 , 2014 compared to the prior year was driven primarily by an increase in sales of our switches and broadband gateways , partially offset by a reduction in sales of our mobile products . the increase in emea net revenue was primarily driven by sales to our service provider customers in fiscal 2014. we expect service provider revenue in emea to decrease in fiscal year 2015. these positive effects to net revenue in fiscal year 2014 were partially offset by challenges resulting from the macro-economic environment , increased competition and pricing pressures in europe , and weakening of foreign currencies compared to the u.s. dollar . the increase in apac net revenue for the year ended december 31 , 2014 compared to the prior year was driven primarily by an increase in sales of our mobile , home wireless and broadband gateway products , partially offset by a reduction in sales of our small business wireless products . net revenue for mobile products specifically increased for the year ended december 31 , 2014 as a result of the aircard acquisition which was completed on april 2 , 2013. in contrast to 2013 , the positive effect of the acquisition is included in our results for the entire year ended december 31 , 2014 . 2013 vs 2012 the increase in americas net revenue for the year ended december 31 , 2013 compared to the prior year was primarily attributable to increased sales of our mobile , home security and automation products and switches , partially offset by a decrease in sales of our broadband gateways . net revenue for mobile products increased for the year ended december 31 , 2013 as a result of the aircard acquisition which was completed in april 2 , 2013. the decrease in emea net revenue for the year ended december 31 , 2013 compared to the prior year was primarily attributable to a decrease in sales of our broadband gateways and home wireless products . net revenue for broadband gateways decreased for the year ended december 31 , 2013 due , in part , to consolidation among european cable operators in europe in the second half of the year . the increase in apac net revenue for the year ended december 31 , 2013 compared to the prior year was primarily attributable to

