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	Mar. 31, 2021	Dec. 31, 2020
Other real estate owned ("OREO") covered and not covered under a loss-share agreement, net of valuation allowances and direct write-downs
Purchased OREO	$ 3,679	$ 3,927
Non Purchased OREO	2,292	2,045
Total OREO	5,971	5,972
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	405	72
Non Purchased OREO	79	107
Total OREO	484	179
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	1,161	1,741
Non Purchased OREO	1,948	924
Total OREO	3,109	2,665
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	337	337
Non Purchased OREO	4	676
Total OREO	341	1,013
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	1,776	1,777
Non Purchased OREO	261	338
Total OREO	$ 2,037	$ 2,115