Other Real Estate Owned (Details) - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016
Other real estate owned ("OREO") covered and not covered under a loss-share agreement, net of valuation allowances and direct write-downs
Purchased OREO	$ 11,524	$ 17,370
Non Purchased OREO	4,410	5,929
Total other real estate owned, net	15,934	23,299
Residential real estate
Other real estate owned ("OREO") covered and not covered under a loss-share agreement, net of valuation allowances and direct write-downs
Purchased OREO	1,683	2,230
Non Purchased OREO	758	699
Total other real estate owned, net	2,441	2,929
Commercial real estate
Other real estate owned ("OREO") covered and not covered under a loss-share agreement, net of valuation allowances and direct write-downs
Purchased OREO	4,314	6,401
Non Purchased OREO	1,624	1,680
Total other real estate owned, net	5,938	8,081
Residential land development
Other real estate owned ("OREO") covered and not covered under a loss-share agreement, net of valuation allowances and direct write-downs
Purchased OREO	1,100	2,344
Non Purchased OREO	781	1,688
Total other real estate owned, net	1,881	4,032
Commercial land development
Other real estate owned ("OREO") covered and not covered under a loss-share agreement, net of valuation allowances and direct write-downs
Purchased OREO	4,427	6,395
Non Purchased OREO	1,247	1,862
Total other real estate owned, net	$ 5,674	$ 8,257