Other Real Estate - Other Real Estate, By Type of Property (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Other real estate, excluding covered other real estate [Line Items]
Total other real estate	$ 29,248	$ 34,668	$ 43,228	$ 62,051
Construction, Land Development And Other Land Properties [Member]
Other real estate, excluding covered other real estate [Line Items]
Total other real estate	11,482	16,206
1 - 4 Family Residential Properties [Member]
Other real estate, excluding covered other real estate [Line Items]
Total other real estate	3,453	4,983
Nonfarm, Nonresidential Properties [Member]
Other real estate, excluding covered other real estate [Line Items]
Total other real estate	$ 14,313	13,296
Other Real Estate Properties [Member]
Other real estate, excluding covered other real estate [Line Items]
Total other real estate		$ 183