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Negotiable order of withdrawal accounts differ from money market demand accounts as they typically have higher reserve requirements and no limit on the number of checks that can be written.","units":{"USD":[{"end":"2012-09-30","val":405100488,"accn":"0001478726-13-000020","fy":2013,"fp":"FY","form":"10-K","filed":"2013-12-13","frame":"CY2012Q3I"},{"end":"2013-09-30","val":427102317,"accn":"0001478726-13-000020","fy":2013,"fp":"FY","form":"10-K","filed":"2013-12-13"},{"end":"2013-09-30","val":427102317,"accn":"0001478726-14-000061","fy":2014,"fp":"FY","form":"10-K","filed":"2014-12-12","frame":"CY2013Q3I"},{"end":"2014-09-30","val":437761938,"accn":"0001478726-14-000061","fy":2014,"fp":"FY","form":"10-K","filed":"2014-12-12"},{"end":"2014-09-30","val":437761938,"accn":"0001478726-15-000043","fy":2015,"fp":"FY","form":"10-K","filed":"2015-12-11","frame":"CY2014Q3I"},{"end":"2015-09-30","val":454588153,"accn":"0001478726-15-000043","fy":2015,"fp":"FY","form":"10-K","filed":"2015-12-11"},{"end":"2015-09-30","val":454588153,"accn":"0001478726-16-000096","fy":2016,"fp":"FY","form":"10-K","filed":"2016-12-09","frame":"CY2015Q3I"},{"end":"2016-09-30","val":720880444,"accn":"0001478726-16-000096","fy":2016,"fp":"FY","form":"10-K","filed":"2016-12-09"},{"end":"2016-09-30","val":720880444,"accn":"0001478726-17-000054","fy":2016,"fp":"FY","form":"10-K","filed":"2017-12-13","frame":"CY2016Q3I"},{"end":"2017-09-30","val":846696010,"accn":"0001478726-17-000054","fy":2016,"fp":"FY","form":"10-K","filed":"2017-12-13","frame":"CY2017Q3I"}]}},"DepositsSavingsDeposits":{"label":"Deposits, Savings Deposits","description":"Amount of interest bearing deposits with no stated maturity, which may include passbook and statement savings accounts and money-market deposit accounts (MMDAs).","units":{"USD":[{"end":"2012-09-30","val":51191715,"accn":"0001478726-13-000020","fy":2013,"fp":"FY","form":"10-K","filed":"2013-12-13","frame":"CY2012Q3I"},{"end":"2013-09-30","val":48323722,"accn":"0001478726-13-000020","fy":2013,"fp":"FY","form":"10-K","filed":"2013-12-13"},{"end":"2013-09-30","val":48323722,"accn":"0001478726-14-000061","fy":2014,"fp":"FY","form":"10-K","filed":"2014-12-12","frame":"CY2013Q3I"},{"end":"2014-09-30","val":48485932,"accn":"0001478726-14-000061","fy":2014,"fp":"FY","form":"10-K","filed":"2014-12-12"},{"end":"2014-09-30","val":48485932,"accn":"0001478726-15-000043","fy":2015,"fp":"FY","form":"10-K","filed":"2015-12-11","frame":"CY2014Q3I"},{"end":"2015-09-30","val":50565695,"accn":"0001478726-15-000043","fy":2015,"fp":"FY","form":"10-K","filed":"2015-12-11"},{"end":"2015-09-30","val":50565695,"accn":"0001478726-16-000096","fy":2016,"fp":"FY","form":"10-K","filed":"2016-12-09","frame":"CY2015Q3I"},{"end":"2016-09-30","val":63824166,"accn":"0001478726-16-000096","fy":2016,"fp":"FY","form":"10-K","filed":"2016-12-09"},{"end":"2016-09-30","val":63824166,"accn":"0001478726-17-000054","fy":2016,"fp":"FY","form":"10-K","filed":"2017-12-13","frame":"CY2016Q3I"},{"end":"2017-09-30","val":66158410,"accn":"0001478726-17-000054","fy":2016,"fp":"FY","form":"10-K","filed":"2017-12-13","frame":"CY2017Q3I"}]}},"Depreciation":{"label":"Depreciation","description":"The amount of expense recognized in the current period that reflects the allocation of the cost of tangible assets over the assets' useful lives. Includes production and non-production related 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Includes assets not subject to a master netting arrangement and not elected to be offset.","units":{"USD":[{"end":"2013-06-30","val":144056,"accn":"0001478726-13-000010","fy":2013,"fp":"Q3","form":"10-Q","filed":"2013-08-09","frame":"CY2013Q2I"}]}},"DerivativeAssetsNoncurrent":{"label":"Derivative Asset, Noncurrent","description":"Fair value, after the effects of master netting arrangements, of a financial asset or other contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset, expected to be settled after one year or the normal operating cycle, if longer. Includes assets not subject to a master netting arrangement and not elected to be offset.","units":{"USD":[{"end":"2013-06-30","val":144056,"accn":"0001478726-13-000010","fy":2013,"fp":"Q3","form":"10-Q","filed":"2013-08-09","frame":"CY2013Q2I"}]}},"DerivativeFairValueOfDerivativeLiability":{"label":"Derivative Liability, Fair Value, Gross Liability","description":"Fair value, before effects of master netting arrangements, of a financial liability or contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset. Includes liabilities elected not to be offset. Excludes liabilities not subject to a master netting arrangement.","units":{"USD":[{"end":"2012-09-30","val":12443,"accn":"0001478726-13-000020","fy":2013,"fp":"FY","form":"10-K","filed":"2013-12-13","frame":"CY2012Q3I"}]}},"DerivativeFinancialInstrumentsLiabilitiesFairValueDisclosure":{"label":"Derivative Financial Instruments, Liabilities, Fair Value Disclosure (Deprecated 2013-01-31)","description":"Derivative instrument obligations meeting the definition of a liability which the Company is a party to as of the balance sheet date.","units":{"USD":[{"end":"2012-09-30","val":12443,"accn":"0001478726-13-000010","fy":2013,"fp":"Q3","form":"10-Q","filed":"2013-08-09","frame":"CY2012Q3I"},{"end":"2012-09-30","val":12443,"accn":"0001437749-13-005717","fy":2013,"fp":"Q2","form":"10-Q","filed":"2013-05-10"},{"end":"2013-03-31","val":21066,"accn":"0001437749-13-005717","fy":2013,"fp":"Q2","form":"10-Q","filed":"2013-05-10","frame":"CY2013Q1I"}]}},"DerivativeLiabilities":{"label":"Derivative Liability","description":"Fair value, after the effects of master netting arrangements, of a financial liability or contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset. 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ceivableRecordedInvestmentPastDue":{"label":"Financing 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Excludes real estate assets taken in settlement of troubled loans through surrender or foreclosure by 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