FDIC Indemnification Asset - Changes in FDIC Indemnification Asset (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
F D I C Indemnification Asset [Abstract]
Balance at beginning of period	$ 6,997	$ 14,347	$ 21,774
Amortization	(2,583)	(2,074)	(2,469)
Transfers to FDIC claims	(2,715)	(4,443)	(851)
Change in expected cash flows	(536)	(517)	(3,472)
Change in FDIC true-up provision	(425)	(316)	(635)
Balance at end of period	$ 738	$ 6,997	$ 14,347