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Common stock represent the ownership interest in a 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Also include Federal Funds sold under agreements to resell on a gross basis, excluding (1) sales of term Federal Funds, (2) due bills representing purchases of securities or other assets by the reporting bank that have not yet been delivered and similar instruments, (3) resale agreements that mature in more than one business day involving assets other than securities, and (4) yield maintenance dollar repurchase agreements.","units":{"USD":[{"end":"2014-06-30","val":12375000,"accn":"0001437749-14-015544","fy":2014,"fp":"Q2","form":"10-Q","filed":"2014-08-14","frame":"CY2014Q2I"},{"end":"2014-09-30","val":10250000,"accn":"0001437749-14-019892","fy":2014,"fp":"Q3","form":"10-Q","filed":"2014-11-07","frame":"CY2014Q3I"},{"end":"2015-12-31","val":18000,"accn":"0001437749-16-027480","fy":2015,"fp":"FY","form":"10-K","filed":"2016-03-11"},{"end":"2015-12-31","val":18000,"accn":"0001437749-16-031081","fy":2016,"fp":"Q1","form":"10-Q","filed":"2016-05-06"},{"end":"2015-12-31","val":18000,"accn":"0001437749-16-036567","fy":2016,"fp":"Q2","form":"10-Q","filed":"2016-08-05"},{"end":"2015-12-31","val":18000,"accn":"0001437749-16-041167","fy":2016,"fp":"Q3","form":"10-Q","filed":"2016-11-04"},{"end":"2015-12-31","val":18000,"accn":"0001437749-17-004279","fy":2016,"fp":"FY","form":"10-K","filed":"2017-03-10","frame":"CY2015Q4I"},{"end":"2016-03-31","val":516000,"accn":"0001437749-16-031081","fy":2016,"fp":"Q1","form":"10-Q","filed":"2016-05-06","frame":"CY2016Q1I"},{"end":"2016-06-30","val":0,"accn":"0001437749-16-036567","fy":2016,"fp":"Q2","form":"10-Q","filed":"2016-08-05","frame":"CY2016Q2I"},{"end":"2016-09-30","val":0,"accn":"0001437749-16-041167","fy":2016,"fp":"Q3","form":"10-Q","filed":"2016-11-04","frame":"CY2016Q3I"},{"end":"2016-12-31","val":0,"accn":"0001437749-17-004279","fy":2016,"fp":"FY","form":"10-K","filed":"2017-03-10","frame":"CY2016Q4I"}]}},"FederalHomeLoanBankAdvancesActivityForYearAverageInterestRateForYear":{"label":"Federal Home Loan Bank, Advances, Activity for Year, Average Interest Rate for Year","description":"The calculated weighted average interest rate for Federal Home Loan Bank advances for the period ended as of the Balance Sheet date.","units":{"pure":[{"start":"2011-01-01","end":"2011-12-31","val":0.0206,"accn":"0001437749-13-002507","fy":2012,"fp":"FY","form":"10-K","filed":"2013-03-08","frame":"CY2011"},{"start":"2012-01-01","end":"2012-12-31","val":0.0176,"accn":"0001437749-13-002507","fy":2012,"fp":"FY","form":"10-K","filed":"2013-03-08","frame":"CY2012"},{"start":"2013-01-01","end":"2013-12-31","val":0.0149,"accn":"0001437749-14-005396","fy":2013,"fp":"FY","form":"10-K","filed":"2014-03-28","frame":"CY2013"}]}},"FederalHomeLoanBankAdvancesMaturitiesSummaryAverageInterestRateAfterFiveYearsFromBalanceSheetDate":{"label":"Federal Home Loan Bank, Advance, Maturity, Average Interest Rate, after Year Five","description":"Weighted average interest rate of advance from Federal Home Loan Bank (FHLBank) due after fifth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).","units":{"pure":[{"end":"2011-12-31","val":0.0395,"accn":"0001437749-13-002507","fy":2012,"fp":"FY","form":"10-K","filed":"2013-03-08","frame":"CY2011Q4I"},{"end":"2012-12-31","val":0.0395,"accn":"0001437749-13-002507","fy":2012,"fp":"FY","form":"10-K","filed":"2013-03-08","frame":"CY2012Q4I"}]}},"FederalHomeLoanBankAdvancesMaturitiesSummaryAverageInterestRateFourToFiveYearsFromBalanceSheetDate":{"label":"Federal Home Loan Bank, Advance, Maturity, Average Interest Rate, Year Five","description":"Weighted average interest rate of advance from Federal Home Loan Bank (FHLBank) due in fifth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).","units":{"pure":[{"end":"2011-12-31","val":0.0395,"accn":"0001437749-13-002507","fy":2012,"fp":"FY","form":"10-K","filed":"2013-03-08","frame":"CY2011Q4I"},{"end":"2012-12-31","val":0.0395,"accn":"0001437749-13-002507","fy":2012,"fp":"FY","form":"10-K","filed":"2013-03-08","frame":"CY2012Q4I"},{"end":"2013-12-31","val":0.0395,"accn":"0001437749-14-005396","fy":2013,"fp":"FY","form":"10-K","filed":"2014-03-28","frame":"CY2013Q4I"}]}},"FederalHomeLoanBankAdvancesMaturitiesSummaryAverageInterestRateOfAmountsDueWithinOneYearOfBalanceSheetDate":{"label":"Federal Home Loan Bank, Advance, Maturity, Average Interest Rate, Year One","description":"Weighted average interest rate of advance from Federal Home Loan Bank (FHLBank) due in next fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).","units":{"pure":[{"end":"2011-12-31","val":0.0225,"accn":"0001437749-13-002507","fy":2012,"fp":"FY","form":"10-K","filed":"2013-03-08","frame":"CY2011Q4I"},{"end":"2013-12-31","val":0.0433,"accn":"0001437749-14-005396","fy":2013,"fp":"FY","form":"10-K","filed":"2014-03-28","frame":"CY2013Q4I"}]}},"FederalHomeLoanBankAdvancesMaturitiesSummaryAverageInterestRateOneToTwoYearsFromBalanceSheetDate":{"label":"Federal Home Loan Bank, Advance, Maturity, Average Interest Rate, Year Two","description":"Weighted average interest rate of advance from Federal Home Loan Bank (FHLBank) due in second fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).","units":{"pure":[{"end":"2011-12-31","val":0.0075,"accn":"0001437749-13-002507","fy":2012,"fp":"FY","form":"10-K","filed":"2013-03-08","frame":"CY2011Q4I"},{"end":"2012-12-31","val":0.0064,"accn":"0001437749-13-002507","fy":2012,"fp":"FY","form":"10-K","filed":"2013-03-08","frame":"CY2012Q4I"},{"end":"2013-12-31","val":0.043,"accn":"0001437749-14-005396","fy":2013,"fp":"FY","form":"10-K","filed":"2014-03-28","frame":"CY2013Q4I"}]}},"FederalHomeLoanBankAdvancesMaturitiesSummaryAverageInterestRateThreeToFourYearsFromBalanceSheetDate":{"label":"Federal Home Loan Bank, Advance, Maturity, Average Interest Rate, Year Four","description":"Weighted average interest rate of advance from Federal Home Loan Bank (FHLBank) due in fourth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).","units":{"pure":[{"end":"2011-12-31","val":0.0449,"accn":"0001437749-13-002507","fy":2012,"fp":"FY","form":"10-K","filed":"2013-03-08","frame":"CY2011Q4I"},{"end":"2012-12-31","val":0.0449,"accn":"0001437749-13-002507","fy":2012,"fp":"FY","form":"10-K","filed":"2013-03-08","frame":"CY2012Q4I"},{"end":"2013-12-31","val":0.0395,"accn":"0001437749-14-005396","fy":2013,"fp":"FY","form":"10-K","filed":"2014-03-28","frame":"CY2013Q4I"}]}},"FederalHomeLoanBankAdvancesMaturitiesSummaryAverageInterestRateTwoToThreeYearsFromBalanceSheetDate":{"label":"Federal Home Loan Bank, Advance, Maturity, Average Interest Rate, Year Three","description":"Weighted average interest rate of advance from Federal Home Loan Bank (FHLBank) due in third fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).","units":{"pure":[{"end":"2011-12-31","val":0.0416,"accn":"0001437749-13-002507","fy":2012,"fp":"FY","form":"10-K","filed":"2013-03-08","frame":"CY2011Q4I"},{"end":"2012-12-31","val":0.0416,"accn":"0001437749-13-002507","fy":2012,"fp":"FY","form":"10-K","filed":"2013-03-08","frame":"CY2012Q4I"},{"end":"2013-12-31","val":0.0101,"accn":"0001437749-14-005396","fy":2013,"fp":"FY","form":"10-K","filed":"2014-03-28","frame":"CY2013Q4I"}]}},"FederalHomeLoanBankAdvancesMaturitiesSummaryDueAfterFiveYearsOfBalanceSheetDate":{"label":"Federal Home Loan Bank, Advance, Maturity, after Year Five","description":"Amount of advance from Federal Home Loan Bank (FHLBank) maturing after fifth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).","units":{"USD":[{"end":"2011-12-31","val":44000,"accn":"0001437749-13-002507","fy":2012,"fp":"FY","form":"10-K","filed":"2013-03-08","frame":"CY2011Q4I"},{"end":"2012-12-31","val":44000,"accn":"0001437749-13-002507","fy":2012,"fp":"FY","form":"10-K","filed":"2013-03-08","frame":"CY2012Q4I"}]}},"FederalHomeLoanBankAdvancesMaturitiesSummaryDueFromFourToFiveYearsOfBalanceSheetDate":{"label":"Federal Home Loan Bank, Advance, Maturity, Year Five","description":"Amount of advance from Federal Home Loan Bank (FHLBank) maturing in fifth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).","units":{"USD":[{"end":"2011-12-31","val":82000,"accn":"0001437749-13-002507","fy":2012,"fp":"FY","form":"10-K","filed":"2013-03-08","frame":"CY2011Q4I"},{"end":"2012-12-31","val":82000,"accn":"0001437749-13-002507","fy":2012,"fp":"FY","form":"10-K","filed":"2013-03-08","frame":"CY2012Q4I"},{"end":"2013-12-31","val":44000,"accn":"0001437749-14-005396","fy":2013,"fp":"FY","form":"10-K","filed":"2014-03-28","frame":"CY2013Q4I"}]}},"FederalHomeLoanBankAdvancesMaturitiesSummaryDueFromOneToTwoYearsOfBalanceSheetDate":{"label":"Federal Home Loan Bank, Advance, Maturity, Year Two","description":"Amount of advance from Federal Home Loan Bank (FHLBank) maturing in second fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).","units":{"USD":[{"end":"2011-12-31","val":2168000,"accn":"0001437749-13-002507","fy":2012,"fp":"FY","form":"10-K","filed":"2013-03-08","frame":"CY2011Q4I"},{"end":"2012-12-31","val":2168000,"accn":"0001437749-13-002507","fy":2012,"fp":"FY","form":"10-K","filed":"2013-03-08","frame":"CY2012Q4I"},{"end":"2013-12-31","val":616000,"accn":"0001437749-14-005396","fy":2013,"fp":"FY","form":"10-K","filed":"2014-03-28","frame":"CY2013Q4I"}]}},"FederalHomeLoanBankAdvancesMaturitiesSummaryDueFromThreeToFourYearsOfBalanceSheetDate":{"label":"Federal Home Loan Bank, Advance, Maturity, Year Four","description":"Amount of advance from Federal Home Loan Bank (FHLBank) maturing in fourth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).","units":{"USD":[{"end":"2011-12-31","val":616000,"accn":"0001437749-13-002507","fy":2012,"fp":"FY","form":"10-K","filed":"2013-03-08","frame":"CY2011Q4I"},{"end":"2012-12-31","val":616000,"accn":"0001437749-13-002507","fy":2012,"fp":"FY","form":"10-K","filed":"2013-03-08","frame":"CY2012Q4I"},{"end":"2013-12-31","val":85000,"accn":"0001437749-14-005396","fy":2013,"fp":"FY","form":"10-K","filed":"2014-03-28","frame":"CY2013Q4I"}]}},"FederalHomeLoanBankAdvancesMaturitiesSummaryDueFromTwoToThreeYearsOfBalanceSheetDate":{"label":"Federal Home Loan Bank, Advance, Maturity, Year Three","description":"Amount of advance from Federal Home Loan Bank (FHLBank) maturing in third fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).","units":{"USD":[{"end":"2011-12-31","val":114000,"accn":"0001437749-13-002507","fy":2012,"fp":"FY","form":"10-K","filed":"2013-03-08","frame":"CY2011Q4I"},{"end":"2012-12-31","val":114000,"accn":"0001437749-13-002507","fy":2012,"fp":"FY","form":"10-K","filed":"2013-03-08","frame":"CY2012Q4I"},{"end":"2013-12-31","val":5082000,"accn":"0001437749-14-005396","fy":2013,"fp":"FY","form":"10-K","filed":"2014-03-28","frame":"CY2013Q4I"}]}},"FederalHomeLoanBankAdvancesMaturitiesSummaryDueWithinOneYearOfBalanceSheetDate":{"label":"Federal Home Loan Bank, Advance, Maturity, Year One","description":"Amount of advance from Federal Home Loan Bank (FHLBank) maturing in next fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).","units":{"USD":[{"end":"2011-12-31","val":3570000,"accn":"0001437749-13-002507","fy":2012,"fp":"FY","form":"10-K","filed":"2013-03-08","frame":"CY2011Q4I"},{"end":"2013-12-31","val":114000,"accn":"0001437749-14-005396","fy":2013,"fp":"FY","form":"10-K","filed":"2014-03-28","frame":"CY2013Q4I"},{"end":"2015-12-31","val":28200000,"accn":"0001437749-17-004279","fy":2016,"fp":"FY","form":"10-K","filed":"2017-03-10","frame":"CY2015Q4I"},{"end":"2016-12-31","val":70000000,"accn":"0001437749-17-004279","fy":2016,"fp":"FY","form":"10-K","filed":"2017-03-10"},{"end":"2016-12-31","val":70000000,"accn":"0001437749-17-008150","fy":2017,"fp":"Q1","form":"10-Q","filed":"2017-05-05"},{"end":"2016-12-31","val":70000000,"accn":"0001437749-17-013613","fy":2017,"fp":"Q2","form":"10-Q","filed":"2017-08-03"},{"end":"2016-12-31","val":70000000,"accn":"0001437749-17-018202","fy":2017,"fp":"Q3","form":"10-Q","filed":"2017-11-03"},{"end":"2016-12-31","val":70000000,"accn":"0001437749-18-004799","fy":2017,"fp":"FY","form":"10-K","filed":"2018-03-16","frame":"CY2016Q4I"},{"end":"2017-03-31","val":165000000,"accn":"0001437749-17-008150","fy":2017,"fp":"Q1","form":"10-Q","filed":"2017-05-05","frame":"CY2017Q1I"},{"end":"2017-06-30","val":195000000,"accn":"0001437749-17-013613","fy":2017,"fp":"Q2","form":"10-Q","filed":"2017-08-03","frame":"CY2017Q2I"},{"end":"2017-09-30","val":300000000,"accn":"0001437749-17-018202","fy":2017,"fp":"Q3","form":"10-Q","filed":"2017-11-03","frame":"CY2017Q3I"},{"end":"2017-12-31","val":315000000,"accn":"0001437749-18-004799","fy":2017,"fp":"FY","form":"10-K","filed":"2018-03-16","frame":"CY2017Q4I"}]}},"FederalHomeLoanBankStock":{"label":"Federal Home Loan Bank Stock","description":"Federal Home Loan Bank (FHLB) stock represents an equity interest in a FHLB. It does not have a readily determinable fair value because its ownership is restricted and it lacks a market (liquidity).","units":{"USD":[{"end":"2010-12-31","val":1257000,"accn":"0001437749-11-005213","fy":2011,"fp":"Q2","form":"10-Q","filed":"2011-07-29"},{"end":"2010-12-31","val":1257000,"accn":"0001437749-11-008230","fy":2011,"fp":"Q3","form":"10-Q","filed":"2011-11-08"},{"end":"2010-12-31","val":1257000,"accn":"0001437749-12-003024","fy":2011,"fp":"FY","form":"10-K","filed":"2012-03-29","frame":"CY2010Q4I"},{"end":"2011-06-30","val":1893000,"accn":"0001437749-11-005213","fy":2011,"fp":"Q2","form":"10-Q","filed":"2011-07-29","frame":"CY2011Q2I"},{"end":"2011-09-30","val":1894000,"accn":"0001437749-11-008230","fy":2011,"fp":"Q3","form":"10-Q","filed":"2011-11-08","frame":"CY2011Q3I"},{"end":"2011-12-31","val":576000,"accn":"0001437749-12-003024","fy":2011,"fp":"FY","form":"10-K","filed":"2012-03-29"},{"end":"2011-12-31","val":576000,"accn":"0001437749-12-004653","fy":2012,"fp":"Q1","form":"10-Q","filed":"2012-05-08"},{"end":"2011-12-31","val":576000,"accn":"0001437749-12-007636","fy":2012,"fp":"Q2","form":"10-Q","filed":"2012-08-03"},{"end":"2011-12-31","val":576000,"accn":"0001437749-12-010765","fy":2012,"fp":"Q3","form":"10-Q","filed":"2012-11-01"},{"end":"2011-12-31","val":576000,"accn":"0001437749-13-002507","fy":2012,"fp":"FY","form":"10-K","filed":"2013-03-08","frame":"CY2011Q4I"},{"end":"2012-03-31","val":577000,"accn":"0001437749-12-004653","fy":2012,"fp":"Q1","form":"10-Q","filed":"2012-05-08","frame":"CY2012Q1I"},{"end":"2012-06-30","val":578000,"accn":"0001437749-12-007636","fy":2012,"fp":"Q2","form":"10-Q","filed":"2012-08-03","frame":"CY2012Q2I"},{"end":"2012-09-30","val":578000,"accn":"0001437749-12-010765","fy":2012,"fp":"Q3","form":"10-Q","filed":"2012-11-01","frame":"CY2012Q3I"},{"end":"2012-12-31","val":375000,"accn":"0001437749-13-002507","fy":2012,"fp":"FY","form":"10-K","filed":"2013-03-08"},{"end":"2012-12-31","val":375000,"accn":"0001437749-13-005293","fy":2013,"fp":"Q1","form":"10-Q","filed":"2013-05-03"},{"end":"2012-12-31","val":375000,"accn":"0001437749-13-009681","fy":2013,"fp":"Q2","form":"10-Q","filed":"2013-07-31"},{"end":"2012-12-31","val":375000,"accn":"0001437749-13-013696","fy":2013,"fp":"Q3","form":"10-Q","filed":"2013-10-31"},{"end":"2012-12-31","val":375000,"accn":"0001437749-14-005396","fy":2013,"fp":"FY","form":"10-K","filed":"2014-03-28","frame":"CY2012Q4I"},{"end":"2013-03-31","val":375000,"accn":"0001437749-13-005293","fy":2013,"fp":"Q1","form":"10-Q","filed":"2013-05-03","frame":"CY2013Q1I"},{"end":"2013-06-30","val":375000,"accn":"0001437749-13-009681","fy":2013,"fp":"Q2","form":"10-Q","filed":"2013-07-31","frame":"CY2013Q2I"},{"end":"2013-09-30","val":259000,"accn":"0001437749-13-013696","fy":2013,"fp":"Q3","form":"10-Q","filed":"2013-10-31","frame":"CY2013Q3I"},{"end":"2013-12-31","val":457000,"accn":"0001437749-14-005396","fy":2013,"fp":"FY","form":"10-K","filed":"2014-03-28"},{"end":"2013-12-31","val":457000,"accn":"0001437749-14-007453","fy":2014,"fp":"Q1","form":"10-Q","filed":"2014-04-29","frame":"CY2013Q4I"},{"end":"2014-03-31","val":457000,"accn":"0001437749-14-007453","fy":2014,"fp":"Q1","form":"10-Q","filed":"2014-04-29","frame":"CY2014Q1I"},{"end":"2015-12-31","val":2977000,"accn":"0001437749-17-004279","fy":2016,"fp":"FY","form":"10-K","filed":"2017-03-10","frame":"CY2015Q4I"},{"end":"2016-12-31","val":5927000,"accn":"0001437749-17-004279","fy":2016,"fp":"FY","form":"10-K","filed":"2017-03-10"},{"end":"2016-12-31","val":5927000,"accn":"0001437749-18-004799","fy":2017,"fp":"FY","form":"10-K","filed":"2018-03-16","frame":"CY2016Q4I"},{"end":"2017-12-31","val":19136000,"accn":"0001437749-18-004799","fy":2017,"fp":"FY","form":"10-K","filed":"2018-03-16","frame":"CY2017Q4I"}]}},"FederalReserveBankStock":{"label":"Federal Reserve Bank Stock","description":"Federal Reserve Bank stock represents an equity interest in the Federal Reserve Bank. 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