FDIC Indemnification Asset (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016	Dec. 31, 2016	Jun. 23, 2016	Mar. 31, 2016	Dec. 31, 2015
Receivable from FDIC for Loss Share Agreements
Balance at beginning of period		$ 4,401
Decrease in expected losses on loans		(23)
Additional recoveries on OREO		(1,736)
Reimbursable expenses		71
Amortization of discounts and premiums, net		(1,475)
Payments to (from) FDIC		853
Balance at end of period		2,091
Payment to settle FDIC loss share agreements	$ 2,300
Amortization of FDIC indemnification assets, net		1,475
FDIC indemnification asset		$ 4,401			$ 2,091	$ 4,401
Covered loans				$ 87,400
Other Real Estate, Covered	0		$ 0	$ 3,000	$ 4,222	$ 5,751
Pre-tax charge	$ 4,400