Other Real Estate and Covered Other Real Estate - Changes and Gains, Net on Other Real Estate, Excluding Covered Other Real Estate (Parenthetical) (Details) - USD ($) $ in Thousands		12 Months Ended
	Jul. 01, 2016	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Other Real Estate [Abstract]
Transfers to non covered other real estate	$ 388	$ 388	$ 0	$ 0