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Repurchase Agreements | 9 Months Ended
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Sep. 30, 2019
Repurchase Agreements [Abstract] |
Repurchase Agreements, Resale Agreements, Securities Borrowed, and Securities Loaned Disclosure [Text Block] | REPURCHASE AGREEMENTS BancShares utilizes securities sold under customer repurchase agreements to facilitate the needs of customers and secure wholesale funding needs. Repurchase agreements are transactions whereby BancShares offers to sell to a counterparty an undivided interest in an eligible security, and which obligates BancShares to repurchase the security, with interest, at an agreed upon date, repurchase price, and interest rate. These agreements are recorded at the amount of cash received in connection with the transaction and are reflected as securities sold under customer repurchase agreements on the Consolidated Balance Sheets. The remaining contractual maturity of the $522.2 million and $543.9 million securities sold under repurchase agreements at September 30, 2019 and December 31, 2018, respectively, was overnight and continuous. Repurchase agreements require BancShares to maintain collateral to support the outstanding obligations. BancShares monitors collateral levels on a continuous basis and maintains records of each transaction specifically describing the applicable security and the counterparty’s interest in that security, and segregates the security from general assets in accordance with regulations governing custodial holdings of securities. The primary risk with repurchase agreements is market risk associated with the investments securing the transactions, as additional collateral may be required based on fair value changes of the underlying investments. Securities pledged as collateral under repurchase agreements are maintained with safekeeping agents and consist of U.S. Treasury and mortgage-backed securities. At September 30, 2019, the carrying value of investment securities pledged as collateral under repurchase agreements was $541.6 million, including investment securities available for sale of $305.2 million and investment securities held to maturity of $236.4 million. At December 31, 2018, the carrying value of investment securities pledged as collateral under repurchase agreements was $598.6 million, all of which were investment securities available for sale.

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- Definition Repurchase Agreements [Abstract] + References No definition available. + Details
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- Definition The entire disclosure for repurchase agreements (also known as repos), resale agreements (also known as reverse repurchase agreements or reverse repos), securities borrowed transactions, and securities loaned transactions. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 860 -URI http://asc.fasb.org/topic&trid=2197590 + Details
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