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Cash and Due from Banks	12 Months Ended
Cash and Due from Banks	Dec. 31, 2018
Cash and Cash Equivalents [Abstract]
Cash and Due from Banks	CASH AND DUE FROM BANKS The Heartland banks are required to maintain certain average cash reserve balances as a non-member bank of the Federal Reserve System. The reserve balance requirements at December 31, 2018 and 2017, were $15.2 million and $10.7 million, respectively.