Other Real Estate - Other Real Estate, By Type of Property (Details) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016	[1]	Dec. 31, 2015	[1]
Other real estate, excluding covered other real estate [Line Items]
Total other real estate	$ 34,668	$ 43,228	$ 62,051		$ 78,828
Construction, Land Development And Other Land Properties [Member]
Other real estate, excluding covered other real estate [Line Items]
Total other real estate	16,206	27,491
1 - 4 Family Residential Properties [Member]
Other real estate, excluding covered other real estate [Line Items]
Total other real estate	4,983	5,081
Nonfarm, Nonresidential Properties [Member]
Other real estate, excluding covered other real estate [Line Items]
Total other real estate	13,296	10,468
Other Real Estate Properties [Member]
Other real estate, excluding covered other real estate [Line Items]
Total other real estate	$ 183	$ 188

[1] The changes and gains, net on other real estate for the year ended December 31, 2016 include covered other real estate.