Loans - Credit Exposure of Portfolio (Details) - USD ($) $ in Thousands	Sep. 30, 2020	Dec. 31, 2019
Credit exposure of loan portfolio by specific credit ratings [Abstract]
Total Loans before Unearned Income	$ 1,794,134	$ 1,528,966
Unearned income	(5,418)	(3,476)
Total loans net of unearned income	1,788,716	1,525,490
Pass
Credit exposure of loan portfolio by specific credit ratings [Abstract]
Total Loans before Unearned Income	1,670,007	1,451,811
Special Mention
Credit exposure of loan portfolio by specific credit ratings [Abstract]
Total Loans before Unearned Income	66,820	24,083
Substandard
Credit exposure of loan portfolio by specific credit ratings [Abstract]
Total Loans before Unearned Income	56,213	53,072
Doubtful
Credit exposure of loan portfolio by specific credit ratings [Abstract]
Total Loans before Unearned Income	1,094	0
Real Estate
Credit exposure of loan portfolio by specific credit ratings [Abstract]
Total Loans before Unearned Income	1,258,357	1,125,132
Real Estate | Pass
Credit exposure of loan portfolio by specific credit ratings [Abstract]
Total Loans before Unearned Income	1,170,103	1,059,248
Real Estate | Special Mention
Credit exposure of loan portfolio by specific credit ratings [Abstract]
Total Loans before Unearned Income	39,753	22,656
Real Estate | Substandard
Credit exposure of loan portfolio by specific credit ratings [Abstract]
Total Loans before Unearned Income	47,407	43,228
Real Estate | Doubtful
Credit exposure of loan portfolio by specific credit ratings [Abstract]
Total Loans before Unearned Income	1,094	0
Real Estate | Construction & land development
Credit exposure of loan portfolio by specific credit ratings [Abstract]
Total Loans before Unearned Income	153,969	172,247
Real Estate | Construction & land development | Pass
Credit exposure of loan portfolio by specific credit ratings [Abstract]
Total Loans before Unearned Income	147,144	163,808
Real Estate | Construction & land development | Special Mention
Credit exposure of loan portfolio by specific credit ratings [Abstract]
Total Loans before Unearned Income	5,794	6,180
Real Estate | Construction & land development | Substandard
Credit exposure of loan portfolio by specific credit ratings [Abstract]
Total Loans before Unearned Income	1,031	2,259
Real Estate | Construction & land development | Doubtful
Credit exposure of loan portfolio by specific credit ratings [Abstract]
Total Loans before Unearned Income	0	0
Real Estate | Farmland
Credit exposure of loan portfolio by specific credit ratings [Abstract]
Total Loans before Unearned Income	27,732	22,741
Real Estate | Farmland | Pass
Credit exposure of loan portfolio by specific credit ratings [Abstract]
Total Loans before Unearned Income	23,151	18,223
Real Estate | Farmland | Special Mention
Credit exposure of loan portfolio by specific credit ratings [Abstract]
Total Loans before Unearned Income	564	3,177
Real Estate | Farmland | Substandard
Credit exposure of loan portfolio by specific credit ratings [Abstract]
Total Loans before Unearned Income	4,017	1,341
Real Estate | Farmland | Doubtful
Credit exposure of loan portfolio by specific credit ratings [Abstract]
Total Loans before Unearned Income	0	0
Real Estate | 1- 4 family
Credit exposure of loan portfolio by specific credit ratings [Abstract]
Total Loans before Unearned Income	273,687	289,635
Real Estate | 1- 4 family | Pass
Credit exposure of loan portfolio by specific credit ratings [Abstract]
Total Loans before Unearned Income	254,816	271,392
Real Estate | 1- 4 family | Special Mention
Credit exposure of loan portfolio by specific credit ratings [Abstract]
Total Loans before Unearned Income	5,524	4,751
Real Estate | 1- 4 family | Substandard
Credit exposure of loan portfolio by specific credit ratings [Abstract]
Total Loans before Unearned Income	13,347	13,492
Real Estate | 1- 4 family | Doubtful
Credit exposure of loan portfolio by specific credit ratings [Abstract]
Total Loans before Unearned Income	0	0
Real Estate | Multifamily
Credit exposure of loan portfolio by specific credit ratings [Abstract]
Total Loans before Unearned Income	41,295	23,973
Real Estate | Multifamily | Pass
Credit exposure of loan portfolio by specific credit ratings [Abstract]
Total Loans before Unearned Income	31,427	16,025
Real Estate | Multifamily | Special Mention
Credit exposure of loan portfolio by specific credit ratings [Abstract]
Total Loans before Unearned Income	1,881	805
Real Estate | Multifamily | Substandard
Credit exposure of loan portfolio by specific credit ratings [Abstract]
Total Loans before Unearned Income	7,987	7,143
Real Estate | Multifamily | Doubtful
Credit exposure of loan portfolio by specific credit ratings [Abstract]
Total Loans before Unearned Income	0	0
Real Estate | Non-farm non-residential
Credit exposure of loan portfolio by specific credit ratings [Abstract]
Total Loans before Unearned Income	761,674	616,536
Real Estate | Non-farm non-residential | Pass
Credit exposure of loan portfolio by specific credit ratings [Abstract]
Total Loans before Unearned Income	713,565	589,800
Real Estate | Non-farm non-residential | Special Mention
Credit exposure of loan portfolio by specific credit ratings [Abstract]
Total Loans before Unearned Income	25,990	7,743
Real Estate | Non-farm non-residential | Substandard
Credit exposure of loan portfolio by specific credit ratings [Abstract]
Total Loans before Unearned Income	21,025	18,993
Real Estate | Non-farm non-residential | Doubtful
Credit exposure of loan portfolio by specific credit ratings [Abstract]
Total Loans before Unearned Income	1,094	0
Non-Real Estate
Credit exposure of loan portfolio by specific credit ratings [Abstract]
Total Loans before Unearned Income	535,777	403,834
Non-Real Estate | Pass
Credit exposure of loan portfolio by specific credit ratings [Abstract]
Total Loans before Unearned Income	499,904	392,563
Non-Real Estate | Special Mention
Credit exposure of loan portfolio by specific credit ratings [Abstract]
Total Loans before Unearned Income	27,067	1,427
Non-Real Estate | Substandard
Credit exposure of loan portfolio by specific credit ratings [Abstract]
Total Loans before Unearned Income	8,806	9,844
Non-Real Estate | Doubtful
Credit exposure of loan portfolio by specific credit ratings [Abstract]
Total Loans before Unearned Income	0	0
Non-Real Estate | Agricultural
Credit exposure of loan portfolio by specific credit ratings [Abstract]
Total Loans before Unearned Income	35,625	26,710
Non-Real Estate | Agricultural | Pass
Credit exposure of loan portfolio by specific credit ratings [Abstract]
Total Loans before Unearned Income	30,419	21,529
Non-Real Estate | Agricultural | Special Mention
Credit exposure of loan portfolio by specific credit ratings [Abstract]
Total Loans before Unearned Income	947	48
Non-Real Estate | Agricultural | Substandard
Credit exposure of loan portfolio by specific credit ratings [Abstract]
Total Loans before Unearned Income	4,259	5,133
Non-Real Estate | Agricultural | Doubtful
Credit exposure of loan portfolio by specific credit ratings [Abstract]
Total Loans before Unearned Income	0	0
Non-Real Estate | Commercial and industrial
Credit exposure of loan portfolio by specific credit ratings [Abstract]
Total Loans before Unearned Income	378,926	268,256
Non-Real Estate | Commercial and industrial | Pass
Credit exposure of loan portfolio by specific credit ratings [Abstract]
Total Loans before Unearned Income	349,417	262,416
Non-Real Estate | Commercial and industrial | Special Mention
Credit exposure of loan portfolio by specific credit ratings [Abstract]
Total Loans before Unearned Income	25,761	1,199
Non-Real Estate | Commercial and industrial | Substandard
Credit exposure of loan portfolio by specific credit ratings [Abstract]
Total Loans before Unearned Income	3,748	4,641
Non-Real Estate | Commercial and industrial | Doubtful
Credit exposure of loan portfolio by specific credit ratings [Abstract]
Total Loans before Unearned Income	0	0
Non-Real Estate | Consumer and other
Credit exposure of loan portfolio by specific credit ratings [Abstract]
Total Loans before Unearned Income	121,226	108,868
Non-Real Estate | Consumer and other | Pass
Credit exposure of loan portfolio by specific credit ratings [Abstract]
Total Loans before Unearned Income	120,068	108,618
Non-Real Estate | Consumer and other | Special Mention
Credit exposure of loan portfolio by specific credit ratings [Abstract]
Total Loans before Unearned Income	359	180
Non-Real Estate | Consumer and other | Substandard
Credit exposure of loan portfolio by specific credit ratings [Abstract]
Total Loans before Unearned Income	799	70
Non-Real Estate | Consumer and other | Doubtful
Credit exposure of loan portfolio by specific credit ratings [Abstract]
Total Loans before Unearned Income	$ 0	$ 0