loans are considered impaired when , based on current information and events , it is probable that the bank will be unable to collect all amounts due according to the original terms of the loan agreement . the collection of all amounts due according to contractual terms means that both the contractual interest and principal payments of a loan will be collected as scheduled in the loan agreement . impaired loans are measured based on the present value of expected future cash flows discounted at the loan 's effective interest rate , or , as a practical expedient , at the loan 's observable market price , or the fair value of the underlying collateral . the fair value of collateral , reduced by costs to sell on a discounted basis , is used if a loan is collateral-dependent . investment securities impairment periodically , we may need to assess whether there have been any events or economic circumstances to indicate that a security on which there is an unrealized loss is impaired on an other-than-temporary basis . in any such instance , we would consider many factors , including the severity and duration of the impairment , our intent and ability to hold the security for a period of time sufficient for a recovery in value , recent events specific to the issuer or industry , and for debt securities , external credit ratings and recent downgrades . securities on which there is an unrealized loss that is deemed to be other-than-temporary are written down to fair value , with the write-down recorded as a realized loss in securities gains ( losses ) . other real estate owned other real estate owned ( “ oreo ” ) , consisting of assets that have been acquired through foreclosure , is recorded at the lower of cost or estimated fair value less the estimated cost of disposition . fair value is based on independent appraisals and other relevant factors . other real estate owned is revalued on an annual basis or more often if market conditions necessitate . valuation adjustments required at foreclosure are charged to the alll . subsequent to foreclosure , losses on the periodic revaluation of the property are charged to net income as oreo expense . significant judgments and complex estimates are required in estimating the fair value of other real estate , and the period of time within which such estimates can be considered current is significantly shortened during periods of market volatility , as experienced in recent years . as a result , the net proceeds realized from sales transactions could differ significantly from appraisals , comparable sales , and other estimates used to determine the fair value of other real estate . goodwill and other identifiable intangible assets other identifiable intangible assets include a core deposit intangible recorded in connection with the acquisition of metro . the core deposit intangible is being amortized over 7 years and the estimated useful life is periodically reviewed for reasonableness . the company has recorded $ 13.6 million of goodwill in connection with the acquisition of metro bancshares , inc. the company tests its goodwill for impairment annually unless interim events or circumstances make it more likely than not that an impairment loss has occurred . impairment is defined as the amount by which the implied fair value of the goodwill is less than the goodwill 's carrying value . impairment losses , if incurred , would be charged to operating expense . for the purposes of evaluating goodwill , the company has determined that it operates only one reporting unit . results of operations net income net income available to common stockholders was $ 81.4 million for the year ended december 31 , 2016 , compared to $ 63.3 million for the year ended december 31 , 2015. this increase in net income is primarily attributable to an increase in net interest income , which increased $ 24.8 million , or 15.3 % , to $ 187.1 million in 2016 from $ 162.3 million in 2015. noninterest income increased $ 4.5 million , or 33.1 % , to $ 18.1 million in 2016 from $ 13.6 million in 2015. noninterest expense increased by $ 7.0 million , or 9.5 % , to $ 81.0 million in 2016 from $ 74.0 million in 2015. basic and diluted net income per common share were $ 1.55 and $ 1.52 , respectively , for the year ended december 31 , 2016 , compared to $ 1.23 and $ 1.20 , respectively , for the year ended december 31 , 2015. return on average assets was 1.42 % in 2016 , compared to 1.38 % in 2015 , and return on average stockholders ' equity was 16.64 % in 2016 , compared to 14.56 % in 2015 . 40 net income available to common stockholders for the year ended december 31 , 2015 was $ 63.3 million , compared to $ 51.9 million for the year ended december 31 , 2014. this increase in net income is primarily attributable to an increase in net interest income , which increased $ 31.7 million , or 24.3 % , to $ 162.3 million in 2015 from $ 130.6 million in 2014. noninterest income increased $ 2.6 million , or 23.6 % , to $ 13.6 million in 2015 from $ 11.0 million in 2014. noninterest expense increased by $ 16.7 million , or 29.1 % , to $ 74.0 million in 2015 from $ 57.3 million in 2014. basic and diluted net income per common share were $ 1.23 and $ 1.20 , respectively , for the year ended december 31 , 2015 , compared to $ 1.09 and $ 1.05 , respectively , for the year ended december 31 , 2014. return on average assets was 1.38 % in 2015 , compared to 1.39 % in 2014 , and return on average stockholders ' equity was 14.56 % in 2015 , compared story_separator_special_tag income tax expense income tax expense was $ 29.3 million for the year ended december 31 , 2016 compared to $ 25.5 million in 2015 and $ 21.6 million in 2014. our effective tax rates for 2016 , 2015 and 2014 were 26.47 % , 28.61 % and 29.20 % , respectively . the decrease in the effective tax rate for 2015 and 2016 primarily relates to historic rehabilitation tax credits recognized in those years . our primary permanent differences are related to tax exempt income on debt securities , state income tax benefit on real estate investment trust dividends , various qualifying tax credits and change in cash surrender value of bank-owned life insurance . we have invested $ 102.5 million in bank-owned life insurance for certain named officers of the bank . the periodic increases in cash surrender value of those policies are tax exempt and therefore contribute to a larger permanent difference between book income and taxable income . we own real estate investment trusts for the purpose of holding and managing participations in residential mortgages and commercial real estate loans originated by the bank . the trusts are majority-owned subsidiaries of a trust holding company , which in turn is a wholly-owned subsidiary of the bank . the trusts earn interest income on the loans they hold and incur operating expenses related to their activities . they pay their net earnings , in the form of dividends , to the bank , which receives a deduction for state income taxes . 45 financial condition assets total assets at december 31 , 2016 , were $ 6.4 billion , an increase of $ 1.3 billion , or 25.5 % , over total assets of $ 5.1 billion at december 31 , 2015. average assets for the year ended december 31 , 2016 were $ 5.7 billion , an increase of $ 1.1 billion , or 23.9 % , over average assets of $ 4.6 billion for the year ended december 31 , 2015. loan growth was the primary reason for the increase in ending and average total assets . year-end 2016 loans were $ 4.9 billion , up $ 0.7 billion , or 16.7 % , over year-end 2015 total loans of $ 4.2 billion . total assets at december 31 , 2015 , were $ 5.1 billion , an increase of $ 1.0 billion , or 24.4 % , over total assets of $ 4.1 billion at december 31 , 2014. average assets for the year ended december 31 , 2015 were $ 4.6 billion , an increase of $ 0.8 billion , or 21.1 % , over average assets of $ 3.8 billion for the year ended december 31 , 2014. loan growth was the primary reason for the increase in ending and average total assets . year-end 2015 loans were $ 4.2 billion , up $ 0.8 billion , or 23.5 % , over year-end 2014 total loans of $ 3.4 billion . earning assets include loans , securities , short-term investments and bank-owned life insurance contracts . we maintain a higher level of earning assets in our business model than do our peers because we allocate fewer of our resources to facilities , atms , cash and due-from-bank accounts used for transaction processing . earning assets at december 31 , 2016 were $ 6.2 billion , or 96.9 % of total assets of $ 6.4 billion . earning assets at december 31 , 2015 were $ 5.0 billion , or 98.0 % of total assets of $ 5.1 billion . we believe this ratio is expected to generally continue at these levels , although it may be affected by economic factors beyond our control . investment portfolio we view the investment portfolio as a source of income and liquidity . our investment strategy is to accept a lower immediate yield in the investment portfolio by targeting shorter term investments . our investment policy provides that no more than 60 % of our total investment portfolio should be composed of municipal securities . at december 31 , 2016 , mortgage-backed securities represented 51 % of the investment portfolio , state and municipal securities represented 30 % of the investment portfolio , u.s. treasury and government agencies represented 9 % of the investment portfolio , and corporate debt represented 10 % of the investment portfolio . all of our investments in mortgage-backed securities are pass-through mortgage-backed securities . we do not currently , and did not have at december 31 , 2016 , any structured investment vehicles or any private-label mortgage-backed securities . the amortized cost of securities in our portfolio totaled $ 485.9 million at december 31 , 2016 , compared to $ 365.7 million at december 31 , 2015. the following table presents the amortized cost of securities available for sale and held to maturity by type at december 31 , 2016 , 2015 and 2014. replace_table_token_10_th the following table presents the amortized cost of our securities as of december 31 , 2016 by their stated maturities ( this maturity schedule excludes security prepayment and call features ) , as well as the taxable equivalent yields for each maturity range . 46 replace_table_token_11_th ( 1 ) yields are presented on a fully-taxable equivalent basis using a tax rate of 35 % . at december 31 , 2016 , we had $ 160.4 million in federal funds sold , compared with $ 34.8 million at december 31 , 2015. at year-end 2016 , there were no holdings of securities of any issuer , other than the u.s. government and its agencies , in an amount greater than 10 % of stockholders ' equity . the objective of our investment policy is to invest funds not otherwise needed to meet our loan demand to earn the maximum return , yet still maintain sufficient liquidity to meet fluctuations in our loan demand and deposit structure . in doing so , we balance the market and credit

debt securities : taxable 988 24 1,012 174 ( 306 ) ( 132 ) tax-exempt ( 15 ) ( 398 ) ( 413 ) 452 ( 333 ) 119 total debt securities 973 ( 374 ) 599 626 ( 639 ) ( 13 ) federal funds sold 788 91 879 ( 86 ) 55 ( 31 ) equity securities 1 34 35 28 24 52 interest-bearing balances with banks 1,317 724 2,041 56 58 114 total interest-earning assets 32,617 243 32,860 35,101 253 35,354 interest-bearing liabilities : interest-bearing demand deposits 354 516 870 266 96 362 savings 21 7 28 32 2 34 money market 2,671 1,406 4,077 1,211 316 1,527 time deposits 343 ( 44 ) 299 793 ( 241 ) 552 total interest-bearing deposits 3,389 1,885 5,274 2,302 173 2,475 federal funds purchased 703 1,203 1,906 212 81 293 other borrowed funds 941 ( 19 ) 922 911 ( 95 ) 816 total interest-bearing - - - - - - liabilities 5,033 3,069 8,102 3,425 159 3,584 increase in net interest income $ 27,584 $ ( 2,826 ) $ 24,758 $ 31,676 $ 94 $ 31,770 42 in the table above , changes in net interest income are attributable to ( a ) changes in average balances ( volume variance ) , ( b ) changes in rates ( rate variance ) , or ( c ) changes in rate and average balances ( rate/volume variance ) . the volume variance is calculated as the change in average balances times the old rate . the rate variance is calculated as the change in rates times the old average balance . the rate/volume variance is calculated as the change in rates times the change in average balances . the rate/volume variance is allocated on a pro rata basis between the volume variance and the rate variance in the table above . from 2015 to 2016 , we experienced an unfavorable variance relating to the interest rate component because average yields on loans decreased by one basis point , while average rates paid on interest-bearing deposits increased by nine basis points .


 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.
     ```debt securities : taxable 988 24 1,012 174 ( 306 ) ( 132 ) tax-exempt ( 15 ) ( 398 ) ( 413 ) 452 ( 333 ) 119 total debt securities 973 ( 374 ) 599 626 ( 639 ) ( 13 ) federal funds sold 788 91 879 ( 86 ) 55 ( 31 ) equity securities 1 34 35 28 24 52 interest-bearing balances with banks 1,317 724 2,041 56 58 114 total interest-earning assets 32,617 243 32,860 35,101 253 35,354 interest-bearing liabilities : interest-bearing demand deposits 354 516 870 266 96 362 savings 21 7 28 32 2 34 money market 2,671 1,406 4,077 1,211 316 1,527 time deposits 343 ( 44 ) 299 793 ( 241 ) 552 total interest-bearing deposits 3,389 1,885 5,274 2,302 173 2,475 federal funds purchased 703 1,203 1,906 212 81 293 other borrowed funds 941 ( 19 ) 922 911 ( 95 ) 816 total interest-bearing - - - - - - liabilities 5,033 3,069 8,102 3,425 159 3,584 increase in net interest income $ 27,584 $ ( 2,826 ) $ 24,758 $ 31,676 $ 94 $ 31,770 42 in the table above , changes in net interest income are attributable to ( a ) changes in average balances ( volume variance ) , ( b ) changes in rates ( rate variance ) , or ( c ) changes in rate and average balances ( rate/volume variance ) . the volume variance is calculated as the change in average balances times the old rate . the rate variance is calculated as the change in rates times the old average balance . the rate/volume variance is calculated as the change in rates times the change in average balances . the rate/volume variance is allocated on a pro rata basis between the volume variance and the rate variance in the table above . from 2015 to 2016 , we experienced an unfavorable variance relating to the interest rate component because average yields on loans decreased by one basis point , while average rates paid on interest-bearing deposits increased by nine basis points .
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 Suspicious Activity Report : loans are considered impaired when , based on current information and events , it is probable that the bank will be unable to collect all amounts due according to the original terms of the loan agreement . the collection of all amounts due according to contractual terms means that both the contractual interest and principal payments of a loan will be collected as scheduled in the loan agreement . impaired loans are measured based on the present value of expected future cash flows discounted at the loan 's effective interest rate , or , as a practical expedient , at the loan 's observable market price , or the fair value of the underlying collateral . the fair value of collateral , reduced by costs to sell on a discounted basis , is used if a loan is collateral-dependent . investment securities impairment periodically , we may need to assess whether there have been any events or economic circumstances to indicate that a security on which there is an unrealized loss is impaired on an other-than-temporary basis . in any such instance , we would consider many factors , including the severity and duration of the impairment , our intent and ability to hold the security for a period of time sufficient for a recovery in value , recent events specific to the issuer or industry , and for debt securities , external credit ratings and recent downgrades . securities on which there is an unrealized loss that is deemed to be other-than-temporary are written down to fair value , with the write-down recorded as a realized loss in securities gains ( losses ) . other real estate owned other real estate owned ( “ oreo ” ) , consisting of assets that have been acquired through foreclosure , is recorded at the lower of cost or estimated fair value less the estimated cost of disposition . fair value is based on independent appraisals and other relevant factors . other real estate owned is revalued on an annual basis or more often if market conditions necessitate . valuation adjustments required at foreclosure are charged to the alll . subsequent to foreclosure , losses on the periodic revaluation of the property are charged to net income as oreo expense . significant judgments and complex estimates are required in estimating the fair value of other real estate , and the period of time within which such estimates can be considered current is significantly shortened during periods of market volatility , as experienced in recent years . as a result , the net proceeds realized from sales transactions could differ significantly from appraisals , comparable sales , and other estimates used to determine the fair value of other real estate . goodwill and other identifiable intangible assets other identifiable intangible assets include a core deposit intangible recorded in connection with the acquisition of metro . the core deposit intangible is being amortized over 7 years and the estimated useful life is periodically reviewed for reasonableness . the company has recorded $ 13.6 million of goodwill in connection with the acquisition of metro bancshares , inc. the company tests its goodwill for impairment annually unless interim events or circumstances make it more likely than not that an impairment loss has occurred . impairment is defined as the amount by which the implied fair value of the goodwill is less than the goodwill 's carrying value . impairment losses , if incurred , would be charged to operating expense . for the purposes of evaluating goodwill , the company has determined that it operates only one reporting unit . results of operations net income net income available to common stockholders was $ 81.4 million for the year ended december 31 , 2016 , compared to $ 63.3 million for the year ended december 31 , 2015. this increase in net income is primarily attributable to an increase in net interest income , which increased $ 24.8 million , or 15.3 % , to $ 187.1 million in 2016 from $ 162.3 million in 2015. noninterest income increased $ 4.5 million , or 33.1 % , to $ 18.1 million in 2016 from $ 13.6 million in 2015. noninterest expense increased by $ 7.0 million , or 9.5 % , to $ 81.0 million in 2016 from $ 74.0 million in 2015. basic and diluted net income per common share were $ 1.55 and $ 1.52 , respectively , for the year ended december 31 , 2016 , compared to $ 1.23 and $ 1.20 , respectively , for the year ended december 31 , 2015. return on average assets was 1.42 % in 2016 , compared to 1.38 % in 2015 , and return on average stockholders ' equity was 16.64 % in 2016 , compared to 14.56 % in 2015 . 40 net income available to common stockholders for the year ended december 31 , 2015 was $ 63.3 million , compared to $ 51.9 million for the year ended december 31 , 2014. this increase in net income is primarily attributable to an increase in net interest income , which increased $ 31.7 million , or 24.3 % , to $ 162.3 million in 2015 from $ 130.6 million in 2014. noninterest income increased $ 2.6 million , or 23.6 % , to $ 13.6 million in 2015 from $ 11.0 million in 2014. noninterest expense increased by $ 16.7 million , or 29.1 % , to $ 74.0 million in 2015 from $ 57.3 million in 2014. basic and diluted net income per common share were $ 1.23 and $ 1.20 , respectively , for the year ended december 31 , 2015 , compared to $ 1.09 and $ 1.05 , respectively , for the year ended december 31 , 2014. return on average assets was 1.38 % in 2015 , compared to 1.39 % in 2014 , and return on average stockholders ' equity was 14.56 % in 2015 , compared story_separator_special_tag income tax expense income tax expense was $ 29.3 million for the year ended december 31 , 2016 compared to $ 25.5 million in 2015 and $ 21.6 million in 2014. our effective tax rates for 2016 , 2015 and 2014 were 26.47 % , 28.61 % and 29.20 % , respectively . the decrease in the effective tax rate for 2015 and 2016 primarily relates to historic rehabilitation tax credits recognized in those years . our primary permanent differences are related to tax exempt income on debt securities , state income tax benefit on real estate investment trust dividends , various qualifying tax credits and change in cash surrender value of bank-owned life insurance . we have invested $ 102.5 million in bank-owned life insurance for certain named officers of the bank . the periodic increases in cash surrender value of those policies are tax exempt and therefore contribute to a larger permanent difference between book income and taxable income . we own real estate investment trusts for the purpose of holding and managing participations in residential mortgages and commercial real estate loans originated by the bank . the trusts are majority-owned subsidiaries of a trust holding company , which in turn is a wholly-owned subsidiary of the bank . the trusts earn interest income on the loans they hold and incur operating expenses related to their activities . they pay their net earnings , in the form of dividends , to the bank , which receives a deduction for state income taxes . 45 financial condition assets total assets at december 31 , 2016 , were $ 6.4 billion , an increase of $ 1.3 billion , or 25.5 % , over total assets of $ 5.1 billion at december 31 , 2015. average assets for the year ended december 31 , 2016 were $ 5.7 billion , an increase of $ 1.1 billion , or 23.9 % , over average assets of $ 4.6 billion for the year ended december 31 , 2015. loan growth was the primary reason for the increase in ending and average total assets . year-end 2016 loans were $ 4.9 billion , up $ 0.7 billion , or 16.7 % , over year-end 2015 total loans of $ 4.2 billion . total assets at december 31 , 2015 , were $ 5.1 billion , an increase of $ 1.0 billion , or 24.4 % , over total assets of $ 4.1 billion at december 31 , 2014. average assets for the year ended december 31 , 2015 were $ 4.6 billion , an increase of $ 0.8 billion , or 21.1 % , over average assets of $ 3.8 billion for the year ended december 31 , 2014. loan growth was the primary reason for the increase in ending and average total assets . year-end 2015 loans were $ 4.2 billion , up $ 0.8 billion , or 23.5 % , over year-end 2014 total loans of $ 3.4 billion . earning assets include loans , securities , short-term investments and bank-owned life insurance contracts . we maintain a higher level of earning assets in our business model than do our peers because we allocate fewer of our resources to facilities , atms , cash and due-from-bank accounts used for transaction processing . earning assets at december 31 , 2016 were $ 6.2 billion , or 96.9 % of total assets of $ 6.4 billion . earning assets at december 31 , 2015 were $ 5.0 billion , or 98.0 % of total assets of $ 5.1 billion . we believe this ratio is expected to generally continue at these levels , although it may be affected by economic factors beyond our control . investment portfolio we view the investment portfolio as a source of income and liquidity . our investment strategy is to accept a lower immediate yield in the investment portfolio by targeting shorter term investments . our investment policy provides that no more than 60 % of our total investment portfolio should be composed of municipal securities . at december 31 , 2016 , mortgage-backed securities represented 51 % of the investment portfolio , state and municipal securities represented 30 % of the investment portfolio , u.s. treasury and government agencies represented 9 % of the investment portfolio , and corporate debt represented 10 % of the investment portfolio . all of our investments in mortgage-backed securities are pass-through mortgage-backed securities . we do not currently , and did not have at december 31 , 2016 , any structured investment vehicles or any private-label mortgage-backed securities . the amortized cost of securities in our portfolio totaled $ 485.9 million at december 31 , 2016 , compared to $ 365.7 million at december 31 , 2015. the following table presents the amortized cost of securities available for sale and held to maturity by type at december 31 , 2016 , 2015 and 2014. replace_table_token_10_th the following table presents the amortized cost of our securities as of december 31 , 2016 by their stated maturities ( this maturity schedule excludes security prepayment and call features ) , as well as the taxable equivalent yields for each maturity range . 46 replace_table_token_11_th ( 1 ) yields are presented on a fully-taxable equivalent basis using a tax rate of 35 % . at december 31 , 2016 , we had $ 160.4 million in federal funds sold , compared with $ 34.8 million at december 31 , 2015. at year-end 2016 , there were no holdings of securities of any issuer , other than the u.s. government and its agencies , in an amount greater than 10 % of stockholders ' equity . the objective of our investment policy is to invest funds not otherwise needed to meet our loan demand to earn the maximum return , yet still maintain sufficient liquidity to meet fluctuations in our loan demand and deposit structure . in doing so , we balance the market and credit

