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Home Loan Bank, Advances, Branch of FHLB Bank, Amount of Advances","description":"Amount of advances from the Federal Home Loan Bank (FHLB).","units":{"USD":[{"end":"2013-09-30","val":94000000,"accn":"0001144204-13-061658","fy":2013,"fp":"Q3","form":"10-Q","filed":"2013-11-14","frame":"CY2013Q3I"},{"end":"2013-12-31","val":94000000,"accn":"0001144204-14-019389","fy":2013,"fp":"FY","form":"10-K","filed":"2014-03-31","frame":"CY2013Q4I"},{"end":"2014-03-31","val":94000000,"accn":"0001144204-14-030848","fy":2014,"fp":"Q1","form":"10-Q","filed":"2014-05-15","frame":"CY2014Q1I"},{"end":"2014-06-30","val":94000000,"accn":"0001144204-14-049626","fy":2014,"fp":"Q2","form":"10-Q","filed":"2014-08-14","frame":"CY2014Q2I"},{"end":"2014-09-30","val":94000000,"accn":"0001144204-14-068284","fy":2014,"fp":"Q3","form":"10-Q","filed":"2014-11-14","frame":"CY2014Q3I"},{"end":"2014-12-31","val":94000000,"accn":"0001144204-15-019762","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-31","frame":"CY2014Q4I"}]}},"FederalHomeLoanBankAdvancesBranchOfFHLBBankWeightedAverageInterestRate":{"label":"Federal Home Loan Bank, Advances, Branch of FHLB Bank, Weighted Average Interest Rate (Deprecated 2016-01-31)","description":"Describes the weighted average interest rate applicable to the specific advances from the Federal Home Loan Bank, by branch, as of the Balance Sheet date.","units":{"pure":[{"end":"2013-08-31","val":0.0414,"accn":"0001144204-16-088001","fy":2015,"fp":"FY","form":"10-K","filed":"2016-03-15"},{"end":"2013-09-30","val":0.0414,"accn":"0001144204-13-061658","fy":2013,"fp":"Q3","form":"10-Q","filed":"2013-11-14","frame":"CY2013Q3I"},{"end":"2013-12-31","val":0.0414,"accn":"0001144204-14-019389","fy":2013,"fp":"FY","form":"10-K","filed":"2014-03-31","frame":"CY2013Q4I"},{"end":"2014-03-31","val":0.0414,"accn":"0001144204-14-030848","fy":2014,"fp":"Q1","form":"10-Q","filed":"2014-05-15","frame":"CY2014Q1I"},{"end":"2014-06-30","val":0.0414,"accn":"0001144204-14-049626","fy":2014,"fp":"Q2","form":"10-Q","filed":"2014-08-14","frame":"CY2014Q2I"},{"end":"2014-09-30","val":0.0414,"accn":"0001144204-14-068284","fy":2014,"fp":"Q3","form":"10-Q","filed":"2014-11-14","frame":"CY2014Q3I"},{"end":"2014-12-31","val":0.0414,"accn":"0001144204-15-019762","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-31","frame":"CY2014Q4I"}]}},"FederalHomeLoanBankAdvancesGeneralDebtObligationsDisclosuresMaximumAmountAvailable":{"label":"Federal Home Loan Bank, Advances, General Debt Obligations, Maximum Amount Available","description":"Amount of maximum advances or credit lines available from the Federal Home Loan Bank (FHLB).","units":{"USD":[{"end":"2012-06-30","val":268500000,"accn":"0001193125-12-354130","fy":2012,"fp":"Q2","form":"10-Q","filed":"2012-08-14","frame":"CY2012Q2I"},{"end":"2012-09-30","val":266300000,"accn":"0001193125-12-469270","fy":2012,"fp":"Q3","form":"10-Q","filed":"2012-11-14","frame":"CY2012Q3I"},{"end":"2012-12-31","val":264000000,"accn":"0001193125-13-133994","fy":2012,"fp":"FY","form":"10-K","filed":"2013-03-29","frame":"CY2012Q4I"},{"end":"2013-03-31","val":268800000,"accn":"0001193125-13-221336","fy":2013,"fp":"Q1","form":"10-Q","filed":"2013-05-15","frame":"CY2013Q1I"},{"end":"2013-06-30","val":273600000,"accn":"0001193125-13-333768","fy":2013,"fp":"Q2","form":"10-Q","filed":"2013-08-14","frame":"CY2013Q2I"},{"end":"2013-09-30","val":279100000,"accn":"0001144204-13-061658","fy":2013,"fp":"Q3","form":"10-Q","filed":"2013-11-14","frame":"CY2013Q3I"},{"end":"2013-12-31","val":256900000,"accn":"0001144204-14-019389","fy":2013,"fp":"FY","form":"10-K","filed":"2014-03-31","frame":"CY2013Q4I"},{"end":"2014-03-31","val":264900000,"accn":"0001144204-14-030848","fy":2014,"fp":"Q1","form":"10-Q","filed":"2014-05-15","frame":"CY2014Q1I"},{"end":"2014-06-30","val":264500000,"accn":"0001144204-14-049626","fy":2014,"fp":"Q2","form":"10-Q","filed":"2014-08-14","frame":"CY2014Q2I"},{"end":"2014-09-30","val":263300000,"accn":"0001144204-14-068284","fy":2014,"fp":"Q3","form":"10-Q","filed":"2014-11-14","frame":"CY2014Q3I"},{"end":"2014-12-31","val":295700000,"accn":"0001144204-15-019762","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-31","frame":"CY2014Q4I"},{"end":"2015-03-31","val":298900000,"accn":"0001144204-15-030420","fy":2015,"fp":"Q1","form":"10-Q","filed":"2015-05-14","frame":"CY2015Q1I"},{"end":"2015-06-30","val":365900000,"accn":"0001144204-15-049406","fy":2015,"fp":"Q2","form":"10-Q","filed":"2015-08-14","frame":"CY2015Q2I"},{"end":"2015-09-30","val":373400000,"accn":"0001144204-15-064102","fy":2015,"fp":"Q3","form":"10-Q","filed":"2015-11-10","frame":"CY2015Q3I"},{"end":"2015-12-31","val":372900000,"accn":"0001144204-16-088001","fy":2015,"fp":"FY","form":"10-K","filed":"2016-03-15","frame":"CY2015Q4I"},{"end":"2016-03-31","val":380900000,"accn":"0001144204-16-100195","fy":2016,"fp":"Q1","form":"10-Q","filed":"2016-05-10","frame":"CY2016Q1I"},{"end":"2016-06-30","val":385600000,"accn":"0001144204-16-117442","fy":2016,"fp":"Q2","form":"10-Q","filed":"2016-08-09","frame":"CY2016Q2I"},{"end":"2016-09-30","val":388300000,"accn":"0001144204-16-132599","fy":2016,"fp":"Q3","form":"10-Q","filed":"2016-11-09","frame":"CY2016Q3I"},{"end":"2016-12-31","val":394600000,"accn":"0001144204-17-014606","fy":2016,"fp":"FY","form":"10-K","filed":"2017-03-15","frame":"CY2016Q4I"},{"end":"2017-03-31","val":419400000,"accn":"0001144204-17-025162","fy":2017,"fp":"Q1","form":"10-Q","filed":"2017-05-08","frame":"CY2017Q1I"}]}},"FederalHomeLoanBankAdvancesLongTerm":{"label":"Long-term Federal Home Loan Bank Advances","description":"Including both current and noncurrent portions, Federal Home Loan Bank borrowings initially due beyond one year or beyond the normal operating cycle if longer.","units":{"USD":[{"end":"2013-09-30","val":10000000,"accn":"0001144204-14-019389","fy":2013,"fp":"FY","form":"10-K","filed":"2014-03-31"},{"end":"2013-09-30","val":10000000,"accn":"0001144204-14-030848","fy":2014,"fp":"Q1","form":"10-Q","filed":"2014-05-15"},{"end":"2013-09-30","val":10000000,"accn":"0001144204-14-049626","fy":2014,"fp":"Q2","form":"10-Q","filed":"2014-08-14"},{"end":"2013-09-30","val":10000000,"accn":"0001144204-14-068284","fy":2014,"fp":"Q3","form":"10-Q","filed":"2014-11-14"},{"end":"2013-09-30","val":10000000,"accn":"0001144204-15-019762","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-31","frame":"CY2013Q3I"},{"end":"2014-12-31","val":0,"accn":"0001144204-15-064102","fy":2015,"fp":"Q3","form":"10-Q","filed":"2015-11-10"},{"end":"2014-12-31","val":0,"accn":"0001144204-16-088001","fy":2015,"fp":"FY","form":"10-K","filed":"2016-03-15","frame":"CY2014Q4I"},{"end":"2015-09-30","val":0,"accn":"0001144204-15-064102","fy":2015,"fp":"Q3","form":"10-Q","filed":"2015-11-10","frame":"CY2015Q3I"},{"end":"2015-12-31","val":0,"accn":"0001144204-16-088001","fy":2015,"fp":"FY","form":"10-K","filed":"2016-03-15"},{"end":"2015-12-31","val":0,"accn":"0001144204-16-100195","fy":2016,"fp":"Q1","form":"10-Q","filed":"2016-05-10"},{"end":"2015-12-31","val":0,"accn":"0001144204-16-117442","fy":2016,"fp":"Q2","form":"10-Q","filed":"2016-08-09"},{"end":"2015-12-31","val":0,"accn":"0001144204-16-132599","fy":2016,"fp":"Q3","form":"10-Q","filed":"2016-11-09","frame":"CY2015Q4I"},{"end":"2016-03-31","val":0,"accn":"0001144204-16-100195","fy":2016,"fp":"Q1","form":"10-Q","filed":"2016-05-10","frame":"CY2016Q1I"},{"end":"2016-06-30","val":0,"accn":"0001144204-16-117442","fy":2016,"fp":"Q2","form":"10-Q","filed":"2016-08-09","frame":"CY2016Q2I"},{"end":"2016-09-30","val":0,"accn":"0001144204-16-132599","fy":2016,"fp":"Q3","form":"10-Q","filed":"2016-11-09","frame":"CY2016Q3I"},{"end":"2016-12-31","val":0,"accn":"0001144204-17-025162","fy":2017,"fp":"Q1","form":"10-Q","filed":"2017-05-08","frame":"CY2016Q4I"},{"end":"2017-03-31","val":0,"accn":"0001144204-17-025162","fy":2017,"fp":"Q1","form":"10-Q","filed":"2017-05-08","frame":"CY2017Q1I"}]}},"FederalHomeLoanBankAdvancesMaturitiesSummaryByInterestRateTypeFixedRateUnderOneYear":{"label":"Federal 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This item does not include penalties assessed on the early withdrawal of time 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