Other Real Estate Owned - Covered and Not Covered Under a Loss-Share Agreement, Net of Valuation Allowances and Direct Write-Downs (Details) - USD ($) $ in Thousands	Jun. 30, 2020	Dec. 31, 2019
Other real estate owned ("OREO") covered and not covered under a loss-share agreement, net of valuation allowances and direct write-downs
Purchased OREO	$ 4,431	$ 5,248
Non Purchased OREO	4,694	2,762
Total OREO	9,125	8,010
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	361	890
Non Purchased OREO	540	415
Total OREO	901	1,305
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	1,356	2,106
Non Purchased OREO	1,158	1,548
Total OREO	2,514	3,654
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	533	530
Non Purchased OREO	2,507	369
Total OREO	3,040	899
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	2,181	1,722
Non Purchased OREO	489	430
Total OREO	$ 2,670	$ 2,152