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Restrictions on Cash and Due from Banks	12 Months Ended
	Dec. 31, 2017
Cash and Cash Equivalents [Abstract]
Restrictions on Cash and Due from Banks	Restrictions on Cash and Due from Banks Included in cash on hand and due from banks at December 31, 2017 and 2016 was $39.5 million and $36.7 million, respectively, representing reserves required by banking regulations.

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