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Securities Sold Under Agreements To Repurchase	12 Months Ended
Securities Sold Under Agreements To Repurchase	Dec. 31, 2017
Securities Sold Under Agreements To Repurchase [Abstract]
Securities Sold Under Agreements To Repurchase	9.SECURITIES SOLD UNDER AGREEMENTS TO REPURCHASE The Bank enters into agreements with customers to sell securities owned by the Bank to the customers and repurchase the identical security, within one business day. No physical movement of the securities is involved. The customers are informed the securities are held in safekeeping by the Bank on behalf of the customers. The Bank had $9.3 million and $10.2 million in securities sold under agreement to repurchase at December 31, 2017 and 2016, respectively.