the most significant competitive factor we face in our u.s. wholesale wireless business is the extent to which our carrier customers choose to roam on our networks or elect to build or acquire their own infrastructure in a market , reducing or eliminating their need for our services in those markets . pending sale of u.s. retail wireless business in the second quarter of 2010 , we completed the acquisition of a portion of the former alltel network from verizon wireless through our u.s. retail wireless business , which now provides wireless voice and data services in rural markets of the united states under the `` alltel `` brand name ( the `` alltel acquisition `` ) and , in the third quarter of 2011 , completed the migration of the alltel assets to our own information technology systems , telecommunications networks and platforms ( the `` alltel transition `` ) . on january 21 , 2013 , we entered into a purchase agreement with at & t mobility llc ( `` at & t `` ) to sell certain of the assets used in our alltel business ( the `` alltel sale `` ) . under the terms of the agreement , at & t will purchase the operations in an all-cash transaction valued at approximately $ 780 million . for the year ended december 31 , 2012 , our alltel business constituted approximately $ 464.4 million , or 63 % , of our consolidated revenues and $ 41.4 million , or 42 % of our consolidated operating income . although the consummation of the alltel sale is subject to customary closing conditions , including approval of the federal communications commission , the required waiting period under the hart scott rodino antitrust improvements act of 1976 has expired and we currently expect to complete the transaction in the second half of 2013. for the purpose of clarity and consistency , each of the forward-looking statements made regarding our operations in this item 7 assumes that the alltel sale has not yet been consummated . merger with m3 wireless , ltd. on may 2 , 2011 , we completed the merger of our bermuda wireless operations , bermuda digital communications , ltd. ( `` bdc `` ) , with that of m3 wireless , ltd. ( `` m3 `` ) , a wireless provider in bermuda ( the `` bermuda merger `` ) . as part of the bermuda merger , m3 merged with and into bdc , and the combined entity continues to operate under bdc 's cellone brand . as a result of the bermuda merger , our 58 % ownership interest in bdc was reduced to a controlling 42 % interest in the combined entity . since we have the right to designate the majority of seats on the combined entity 's board of directors and therefore control its management and policies , we have consolidated the results of the combined entity in our consolidated financial statements effective on the date of the bermuda merger . stimulus grants we were awarded several federal stimulus grants in 2009 and 2010 by the u.s. government under provisions of the american recovery and reinvestment act of 2009 intended to stimulate the deployment of broadband infrastructure and services to rural , unserved and underserved areas . as of december 31 , 2012 , we have spent ( i ) $ 24.7 million in capital expenditures ( of which $ 19.7 million has 37 been or will be funded by the federal stimulus grant ) in connection with our ion upstate new york rural broadband initiative , which involves building ten new segments of fiber-optic , middle-mile broadband infrastructure in upstate new york and parts of pennsylvania and vermont ; ( ii ) $ 5.5 million in capital expenditures ( of which $ 3.9 million has been or will be funded by the federal stimulus grant ) in connection with our last-mile broadband infrastructure buildout in the navajo nation across arizona , new mexico and utah ; and ( iii ) $ 26.0 million in capital expenditures ( of which $ 18.2 million has been or will be funded by the federal stimulus grant ) in connection with our fiber-optic middle mile network buildout to provide broadband and transport services to over 340 community anchor institutions in vermont . the results of our new york and vermont stimulus projects are included in our `` u.s. wireline `` segment and the results of our navajo stimulus project are included in our `` u.s. wireless `` segment . mobility fund grants in november 2011 , the federal communications commission ( `` fcc `` ) released an order reforming its universal service fund ( `` usf `` ) program , which previously provided support to carriers seeking to offer telecommunications services in high-cost areas and to low-income households . in 2011 , we received approximately $ 9.9 million in usf support to our u.s. wireless businesses relating to high-cost areas . beginning in june 2012 , the fcc began phasing out this existing usf support at a rate of 20 % per year over the next five years as part of its reform program . also as part of the usf reform program , the fcc created two new funds , including the mobility fund , a one-time grant meant to support wireless coverage in underserved geographic areas in the united states . on october 3 , 2012 , we were provisionally awarded approximately $ 68.8 million by the fcc under the new mobility fund ( the `` mobility fund grants `` ) . story_separator_special_tag depreciation and amortization expenses increased by $ 1.3 million , or 1 % , from $ 104.2 million for the year ended december 31 , 2011 to $ 105.5 million for the year ended december 31 , 2012. the increase is primarily due to additional fixed assets associated with the development of operational and business support systems which were put in service at the end of the alltel transition as well as the addition of tangible and intangible assets acquired in our bermuda merger . we expect depreciation expense to continue to increase as we acquire more tangible assets to expand or upgrade our networks . such increase , however , will be partially offset by a future decrease in the amortization of our intangible assets , which are being amortized using an accelerated amortization method . impairment of intangible assets . we performed our annual impairment assessment of our telecommunications licenses as of december 31 , 2012 and determined that one of our telecommunications licenses used in our island wireless segment was impaired . as a result , we recorded a non-cash impairment charge for the entire $ 3.4 million net book value of the license during the year ended december 31 , 2012. gain on disposition of long-lived assets . during the year ended december 31 , 2012 , we sold certain network assets and spectrum in the midwestern united states used in our wholesale u.s. 43 wireless business for proceeds of $ 15.6 million and recognized a gain on such disposition of $ 11.6 million . interest expense . interest expense represents interest incurred on our outstanding credit facilities including our interest rate swaps . interest expense decreased from $ 17.4 million for the year ended december 31 , 2011 to $ 14.1 million for the year ended december 31 , 2012 due to a reduction in our outstanding debt and decreases in applicable margins as a result of amendments to our credit facilities effective september 16 , 2011 and may 18 , 2012. as of december 31 , 2012 , we had $ 272.1 million in outstanding debt as compared to $ 286.0 million as of december 31 , 2011. interest income . interest income represents interest earned on our cash and cash equivalents . an increase in our cash balances during 2012 was offset by a reduction in the interest rates that we earned on those balances . as a result , interest income remained consistent at $ 0.4 million for the years ended december 31 , 2011 and 2012. equity in earnings of an unconsolidated affiliate . equity in earnings of an unconsolidated affiliate is related to a minority-owned investment in our u.s. wireless segment . equity in earnings of an unconsolidated affiliate was $ 3.0 million for the year ended december 31 , 2011 compared to $ 3.5 million for the year ended december 31 , 2012. other income ( expense ) , net . other income ( expense ) , net represents miscellaneous non-operational income we earned or expenses we incurred . other income ( expense ) , net was $ 1.1 million and $ 2.3 million for the years ended december 31 , 2011 and 2012 respectively . income taxes . our effective tax rates for the year ended december 31 , 2011 and 2012 were 48 % and 42 % , respectively . our effective tax rate declined in 2012 as the result of an increased proportional share of income in lower taxed jurisdictions , such as bermuda and the u.s. , as compared to 2011. in addition , we recorded a $ 1.1 million benefit , net of reserves , relating to u.s. research and development tax credits claimed for 2010 and 2011 that positively impacted the effective tax rate by approximately 1.2 % . excluding the research and development tax credits , our effective tax rates were higher than the statutory federal income tax rate of 35 % due primarily to ( i ) the portion of our earnings that are taxed in guyana at 45 % , and ( ii ) the portion of our earnings that include losses generated in non-tax foreign jurisdictions for which we receive no tax benefit . our consolidated tax rate will continue to be impacted by the shift in the mix of income generated in the jurisdictions in which we operate . net income attributable to non-controlling interests . net loss attributable to non-controlling interests reflected an allocation of $ 0.1 million and $ 4.2 million of income generated by our less than wholly-owned subsidiaries for the year ended december 31 , 2011 and 2012 , respectively . the increase was the result of an increase in income generated by our less than wholly owned subsidiary in bermuda due to the bermuda merger in 2011. net income attributable to atlantic tele-network , inc. stockholders . net income attributable to atlantic tele-network , inc. stockholders increased to $ 48.9 million for the year ended december 31 , 2012 from $ 21.8 million for the year ended december 31 , 2011. on a per share basis , net income increased to $ 3.13 per diluted share from $ 1.41 per diluted share for the year ended december 31 , 2012 and 2011 , respectively . 44 results of operations years ended december 31 , 2010 and 2011 replace_table_token_9_th u.s. wireless revenue . retail revenue the retail portion of our u.s. wireless revenue was $ 370.2 million for the year ended december 31 , 2011 as compared to $ 293.1 million for the year ended december 31 , 2010. the increase of $ 77.1 million , or 26 % , was the result of 2011 representing a full year of operations of our alltel 45 acquisition , which we completed in april 2010 , and was partially offset by a decrease in subscribers during the period subsequent to the acquisition . as of december 31 , 2011 , we had approximately 582,000 u.s. retail

sources of cash total liquidity at december 31 , 2012. as of december 31 , 2012 , we had approximately $ 136.6 million in cash and cash equivalents , an increase of $ 87.9 million from the december 31 , 2011 balance of $ 48.7 million . the increase in our cash and cash equivalents is attributable to an increase in cash provided by our operating activities partially offset by investments in capital expenditures and dividends paid to our stockholders . cash generated by operations . cash provided by operating activities was $ 132.6 million for the year ended december 31 , 2011 and $ 187.5 million for the year ended december 31 , 2012 , an increase of $ 54.9 million . of this increase , $ 31.3 million is attributable to an increase in net income predominantly as a result of the completion of the alltel transition and the completion of the bermuda merger . the remainder of the increase in cash generated by operations was the result of an $ 11.5 million income tax refund as well changes in our working capital . cash used in financing activities . cash used in financing activities increased by $ 11.7 million from $ 25.6 million to $ 37.3 million for the years ended december 31 , 2011 and 2012 , respectively . the increase was primarily the result of an additional dividend paid to our stockholders in 2012 , increased principal repayments on our credit facility and the payment of debt issuance costs in connection with an amendment to our credit facility effective may 18 , 2012. loan facilitiesbank on may 18 , 2012 , we amended and restated our existing credit facility with cobank , acb ( the `` amended credit facility '' ) providing for $ 275.0 million in two term loans and a revolver loan of up to $ 100.0 million ( which includes a $ 10.0 million swingline sub-facility ) and additional term loans up to an aggregate of $ 100.0 million , subject to lender approval .


 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.
     ```sources of cash total liquidity at december 31 , 2012. as of december 31 , 2012 , we had approximately $ 136.6 million in cash and cash equivalents , an increase of $ 87.9 million from the december 31 , 2011 balance of $ 48.7 million . the increase in our cash and cash equivalents is attributable to an increase in cash provided by our operating activities partially offset by investments in capital expenditures and dividends paid to our stockholders . cash generated by operations . cash provided by operating activities was $ 132.6 million for the year ended december 31 , 2011 and $ 187.5 million for the year ended december 31 , 2012 , an increase of $ 54.9 million . of this increase , $ 31.3 million is attributable to an increase in net income predominantly as a result of the completion of the alltel transition and the completion of the bermuda merger . the remainder of the increase in cash generated by operations was the result of an $ 11.5 million income tax refund as well changes in our working capital . cash used in financing activities . cash used in financing activities increased by $ 11.7 million from $ 25.6 million to $ 37.3 million for the years ended december 31 , 2011 and 2012 , respectively . the increase was primarily the result of an additional dividend paid to our stockholders in 2012 , increased principal repayments on our credit facility and the payment of debt issuance costs in connection with an amendment to our credit facility effective may 18 , 2012. loan facilitiesbank on may 18 , 2012 , we amended and restated our existing credit facility with cobank , acb ( the `` amended credit facility '' ) providing for $ 275.0 million in two term loans and a revolver loan of up to $ 100.0 million ( which includes a $ 10.0 million swingline sub-facility ) and additional term loans up to an aggregate of $ 100.0 million , subject to lender approval .
```    
 Suspicious Activity Report : the most significant competitive factor we face in our u.s. wholesale wireless business is the extent to which our carrier customers choose to roam on our networks or elect to build or acquire their own infrastructure in a market , reducing or eliminating their need for our services in those markets . pending sale of u.s. retail wireless business in the second quarter of 2010 , we completed the acquisition of a portion of the former alltel network from verizon wireless through our u.s. retail wireless business , which now provides wireless voice and data services in rural markets of the united states under the `` alltel `` brand name ( the `` alltel acquisition `` ) and , in the third quarter of 2011 , completed the migration of the alltel assets to our own information technology systems , telecommunications networks and platforms ( the `` alltel transition `` ) . on january 21 , 2013 , we entered into a purchase agreement with at & t mobility llc ( `` at & t `` ) to sell certain of the assets used in our alltel business ( the `` alltel sale `` ) . under the terms of the agreement , at & t will purchase the operations in an all-cash transaction valued at approximately $ 780 million . for the year ended december 31 , 2012 , our alltel business constituted approximately $ 464.4 million , or 63 % , of our consolidated revenues and $ 41.4 million , or 42 % of our consolidated operating income . although the consummation of the alltel sale is subject to customary closing conditions , including approval of the federal communications commission , the required waiting period under the hart scott rodino antitrust improvements act of 1976 has expired and we currently expect to complete the transaction in the second half of 2013. for the purpose of clarity and consistency , each of the forward-looking statements made regarding our operations in this item 7 assumes that the alltel sale has not yet been consummated . merger with m3 wireless , ltd. on may 2 , 2011 , we completed the merger of our bermuda wireless operations , bermuda digital communications , ltd. ( `` bdc `` ) , with that of m3 wireless , ltd. ( `` m3 `` ) , a wireless provider in bermuda ( the `` bermuda merger `` ) . as part of the bermuda merger , m3 merged with and into bdc , and the combined entity continues to operate under bdc 's cellone brand . as a result of the bermuda merger , our 58 % ownership interest in bdc was reduced to a controlling 42 % interest in the combined entity . since we have the right to designate the majority of seats on the combined entity 's board of directors and therefore control its management and policies , we have consolidated the results of the combined entity in our consolidated financial statements effective on the date of the bermuda merger . stimulus grants we were awarded several federal stimulus grants in 2009 and 2010 by the u.s. government under provisions of the american recovery and reinvestment act of 2009 intended to stimulate the deployment of broadband infrastructure and services to rural , unserved and underserved areas . as of december 31 , 2012 , we have spent ( i ) $ 24.7 million in capital expenditures ( of which $ 19.7 million has 37 been or will be funded by the federal stimulus grant ) in connection with our ion upstate new york rural broadband initiative , which involves building ten new segments of fiber-optic , middle-mile broadband infrastructure in upstate new york and parts of pennsylvania and vermont ; ( ii ) $ 5.5 million in capital expenditures ( of which $ 3.9 million has been or will be funded by the federal stimulus grant ) in connection with our last-mile broadband infrastructure buildout in the navajo nation across arizona , new mexico and utah ; and ( iii ) $ 26.0 million in capital expenditures ( of which $ 18.2 million has been or will be funded by the federal stimulus grant ) in connection with our fiber-optic middle mile network buildout to provide broadband and transport services to over 340 community anchor institutions in vermont . the results of our new york and vermont stimulus projects are included in our `` u.s. wireline `` segment and the results of our navajo stimulus project are included in our `` u.s. wireless `` segment . mobility fund grants in november 2011 , the federal communications commission ( `` fcc `` ) released an order reforming its universal service fund ( `` usf `` ) program , which previously provided support to carriers seeking to offer telecommunications services in high-cost areas and to low-income households . in 2011 , we received approximately $ 9.9 million in usf support to our u.s. wireless businesses relating to high-cost areas . beginning in june 2012 , the fcc began phasing out this existing usf support at a rate of 20 % per year over the next five years as part of its reform program . also as part of the usf reform program , the fcc created two new funds , including the mobility fund , a one-time grant meant to support wireless coverage in underserved geographic areas in the united states . on october 3 , 2012 , we were provisionally awarded approximately $ 68.8 million by the fcc under the new mobility fund ( the `` mobility fund grants `` ) . story_separator_special_tag depreciation and amortization expenses increased by $ 1.3 million , or 1 % , from $ 104.2 million for the year ended december 31 , 2011 to $ 105.5 million for the year ended december 31 , 2012. the increase is primarily due to additional fixed assets associated with the development of operational and business support systems which were put in service at the end of the alltel transition as well as the addition of tangible and intangible assets acquired in our bermuda merger . we expect depreciation expense to continue to increase as we acquire more tangible assets to expand or upgrade our networks . such increase , however , will be partially offset by a future decrease in the amortization of our intangible assets , which are being amortized using an accelerated amortization method . impairment of intangible assets . we performed our annual impairment assessment of our telecommunications licenses as of december 31 , 2012 and determined that one of our telecommunications licenses used in our island wireless segment was impaired . as a result , we recorded a non-cash impairment charge for the entire $ 3.4 million net book value of the license during the year ended december 31 , 2012. gain on disposition of long-lived assets . during the year ended december 31 , 2012 , we sold certain network assets and spectrum in the midwestern united states used in our wholesale u.s. 43 wireless business for proceeds of $ 15.6 million and recognized a gain on such disposition of $ 11.6 million . interest expense . interest expense represents interest incurred on our outstanding credit facilities including our interest rate swaps . interest expense decreased from $ 17.4 million for the year ended december 31 , 2011 to $ 14.1 million for the year ended december 31 , 2012 due to a reduction in our outstanding debt and decreases in applicable margins as a result of amendments to our credit facilities effective september 16 , 2011 and may 18 , 2012. as of december 31 , 2012 , we had $ 272.1 million in outstanding debt as compared to $ 286.0 million as of december 31 , 2011. interest income . interest income represents interest earned on our cash and cash equivalents . an increase in our cash balances during 2012 was offset by a reduction in the interest rates that we earned on those balances . as a result , interest income remained consistent at $ 0.4 million for the years ended december 31 , 2011 and 2012. equity in earnings of an unconsolidated affiliate . equity in earnings of an unconsolidated affiliate is related to a minority-owned investment in our u.s. wireless segment . equity in earnings of an unconsolidated affiliate was $ 3.0 million for the year ended december 31 , 2011 compared to $ 3.5 million for the year ended december 31 , 2012. other income ( expense ) , net . other income ( expense ) , net represents miscellaneous non-operational income we earned or expenses we incurred . other income ( expense ) , net was $ 1.1 million and $ 2.3 million for the years ended december 31 , 2011 and 2012 respectively . income taxes . our effective tax rates for the year ended december 31 , 2011 and 2012 were 48 % and 42 % , respectively . our effective tax rate declined in 2012 as the result of an increased proportional share of income in lower taxed jurisdictions , such as bermuda and the u.s. , as compared to 2011. in addition , we recorded a $ 1.1 million benefit , net of reserves , relating to u.s. research and development tax credits claimed for 2010 and 2011 that positively impacted the effective tax rate by approximately 1.2 % . excluding the research and development tax credits , our effective tax rates were higher than the statutory federal income tax rate of 35 % due primarily to ( i ) the portion of our earnings that are taxed in guyana at 45 % , and ( ii ) the portion of our earnings that include losses generated in non-tax foreign jurisdictions for which we receive no tax benefit . our consolidated tax rate will continue to be impacted by the shift in the mix of income generated in the jurisdictions in which we operate . net income attributable to non-controlling interests . net loss attributable to non-controlling interests reflected an allocation of $ 0.1 million and $ 4.2 million of income generated by our less than wholly-owned subsidiaries for the year ended december 31 , 2011 and 2012 , respectively . the increase was the result of an increase in income generated by our less than wholly owned subsidiary in bermuda due to the bermuda merger in 2011. net income attributable to atlantic tele-network , inc. stockholders . net income attributable to atlantic tele-network , inc. stockholders increased to $ 48.9 million for the year ended december 31 , 2012 from $ 21.8 million for the year ended december 31 , 2011. on a per share basis , net income increased to $ 3.13 per diluted share from $ 1.41 per diluted share for the year ended december 31 , 2012 and 2011 , respectively . 44 results of operations years ended december 31 , 2010 and 2011 replace_table_token_9_th u.s. wireless revenue . retail revenue the retail portion of our u.s. wireless revenue was $ 370.2 million for the year ended december 31 , 2011 as compared to $ 293.1 million for the year ended december 31 , 2010. the increase of $ 77.1 million , or 26 % , was the result of 2011 representing a full year of operations of our alltel 45 acquisition , which we completed in april 2010 , and was partially offset by a decrease in subscribers during the period subsequent to the acquisition . as of december 31 , 2011 , we had approximately 582,000 u.s. retail

