Loans - Aging of Recorded Investment in Past Due Loans (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Financing Receivable, Past Due [Line Items]
Total ending loans balance	$ 3,634,792	$ 3,371,789
30 - 59 Days Past Due
Financing Receivable, Past Due [Line Items]
Total ending loans balance	3,237	4,430
60 - 89 Days Past Due
Financing Receivable, Past Due [Line Items]
Total ending loans balance	1,450	2,430
Greater Than 89 Days Past Due
Financing Receivable, Past Due [Line Items]
Total ending loans balance	4,990	20,682
Total Past Due
Financing Receivable, Past Due [Line Items]
Total ending loans balance	9,677	27,542
Loans Not Past Due
Financing Receivable, Past Due [Line Items]
Total ending loans balance	3,625,115	3,344,247
Farmland
Financing Receivable, Past Due [Line Items]
Total ending loans balance		23,316
Farmland | 30 - 59 Days Past Due
Financing Receivable, Past Due [Line Items]
Total ending loans balance	348	195
Farmland | 60 - 89 Days Past Due
Financing Receivable, Past Due [Line Items]
Total ending loans balance	0	0
Farmland | Greater Than 89 Days Past Due
Financing Receivable, Past Due [Line Items]
Total ending loans balance	0	1,211
Farmland | Total Past Due
Financing Receivable, Past Due [Line Items]
Total ending loans balance	348	1,406
Farmland | Loans Not Past Due
Financing Receivable, Past Due [Line Items]
Total ending loans balance	23,420	21,910
Owner-occupied, nonfarm nonresidential properties
Financing Receivable, Past Due [Line Items]
Total ending loans balance		407,924
Owner-occupied, nonfarm nonresidential properties | 30 - 59 Days Past Due
Financing Receivable, Past Due [Line Items]
Total ending loans balance	278	10
Owner-occupied, nonfarm nonresidential properties | 60 - 89 Days Past Due
Financing Receivable, Past Due [Line Items]
Total ending loans balance	18	885
Owner-occupied, nonfarm nonresidential properties | Greater Than 89 Days Past Due
Financing Receivable, Past Due [Line Items]
Total ending loans balance	414	732
Owner-occupied, nonfarm nonresidential properties | Total Past Due
Financing Receivable, Past Due [Line Items]
Total ending loans balance	710	1,627
Owner-occupied, nonfarm nonresidential properties | Loans Not Past Due
Financing Receivable, Past Due [Line Items]
Total ending loans balance	433,962	406,297
Agricultural production and other loans to farmers
Financing Receivable, Past Due [Line Items]
Total ending loans balance		2,664
Agricultural production and other loans to farmers | 30 - 59 Days Past Due
Financing Receivable, Past Due [Line Items]
Total ending loans balance	0	0
Agricultural production and other loans to farmers | 60 - 89 Days Past Due
Financing Receivable, Past Due [Line Items]
Total ending loans balance	0	0
Agricultural production and other loans to farmers | Greater Than 89 Days Past Due
Financing Receivable, Past Due [Line Items]
Total ending loans balance	0	0
Agricultural production and other loans to farmers | Total Past Due
Financing Receivable, Past Due [Line Items]
Total ending loans balance	0	0
Agricultural production and other loans to farmers | Loans Not Past Due
Financing Receivable, Past Due [Line Items]
Total ending loans balance	1,379	2,664
Commercial and Industrial
Financing Receivable, Past Due [Line Items]
Total ending loans balance		663,550
Commercial and Industrial | 30 - 59 Days Past Due
Financing Receivable, Past Due [Line Items]
Total ending loans balance	377	476
Commercial and Industrial | 60 - 89 Days Past Due
Financing Receivable, Past Due [Line Items]
Total ending loans balance	13	335
Commercial and Industrial | Greater Than 89 Days Past Due
Financing Receivable, Past Due [Line Items]
Total ending loans balance	333	3,887
Commercial and Industrial | Total Past Due
Financing Receivable, Past Due [Line Items]
Total ending loans balance	723	4,698
Commercial and Industrial | Loans Not Past Due
Financing Receivable, Past Due [Line Items]
Total ending loans balance	708,266	658,852
Obligations (other than securities and leases) of states and political subdivisions
Financing Receivable, Past Due [Line Items]
Total ending loans balance		132,818
Obligations (other than securities and leases) of states and political subdivisions | 30 - 59 Days Past Due
Financing Receivable, Past Due [Line Items]
Total ending loans balance	0	0
Obligations (other than securities and leases) of states and political subdivisions | 60 - 89 Days Past Due
Financing Receivable, Past Due [Line Items]
Total ending loans balance	0	0
Obligations (other than securities and leases) of states and political subdivisions | Greater Than 89 Days Past Due
Financing Receivable, Past Due [Line Items]
Total ending loans balance	0	0
Obligations (other than securities and leases) of states and political subdivisions | Total Past Due
Financing Receivable, Past Due [Line Items]
Total ending loans balance	0	0
Obligations (other than securities and leases) of states and political subdivisions | Loans Not Past Due
Financing Receivable, Past Due [Line Items]
Total ending loans balance	140,887	132,818
Other loans
Financing Receivable, Past Due [Line Items]
Total ending loans balance		11,961
Other loans | 30 - 59 Days Past Due
Financing Receivable, Past Due [Line Items]
Total ending loans balance	0	0
Other loans | 60 - 89 Days Past Due
Financing Receivable, Past Due [Line Items]
Total ending loans balance	0	0
Other loans | Greater Than 89 Days Past Due
Financing Receivable, Past Due [Line Items]
Total ending loans balance	0	0
Other loans | Total Past Due
Financing Receivable, Past Due [Line Items]
Total ending loans balance	0	0
Other loans | Loans Not Past Due
Financing Receivable, Past Due [Line Items]
Total ending loans balance	13,979	11,961
Other construction loans and all land development and other land loans
Financing Receivable, Past Due [Line Items]
Total ending loans balance		205,734
Other construction loans and all land development and other land loans | 30 - 59 Days Past Due
Financing Receivable, Past Due [Line Items]
Total ending loans balance	0	0
Other construction loans and all land development and other land loans | 60 - 89 Days Past Due
Financing Receivable, Past Due [Line Items]
Total ending loans balance	0	0
Other construction loans and all land development and other land loans | Greater Than 89 Days Past Due
Financing Receivable, Past Due [Line Items]
Total ending loans balance	77	1,917
Other construction loans and all land development and other land loans | Total Past Due
Financing Receivable, Past Due [Line Items]
Total ending loans balance	77	1,917
Other construction loans and all land development and other land loans | Loans Not Past Due
Financing Receivable, Past Due [Line Items]
Total ending loans balance	298,792	203,817
Multifamily (5 or more) residential properties
Financing Receivable, Past Due [Line Items]
Total ending loans balance		212,815
Multifamily (5 or more) residential properties | 30 - 59 Days Past Due
Financing Receivable, Past Due [Line Items]
Total ending loans balance	0	0
Multifamily (5 or more) residential properties | 60 - 89 Days Past Due
Financing Receivable, Past Due [Line Items]
Total ending loans balance	10	0
Multifamily (5 or more) residential properties | Greater Than 89 Days Past Due
Financing Receivable, Past Due [Line Items]
Total ending loans balance	209	0
Multifamily (5 or more) residential properties | Total Past Due
Financing Receivable, Past Due [Line Items]
Total ending loans balance	219	0
Multifamily (5 or more) residential properties | Loans Not Past Due
Financing Receivable, Past Due [Line Items]
Total ending loans balance	215,924	212,815
Non-owner occupied, nonfarm nonresidential properties
Financing Receivable, Past Due [Line Items]
Total ending loans balance		640,945
Non-owner occupied, nonfarm nonresidential properties | 30 - 59 Days Past Due
Financing Receivable, Past Due [Line Items]
Total ending loans balance	0	314
Non-owner occupied, nonfarm nonresidential properties | 60 - 89 Days Past Due
Financing Receivable, Past Due [Line Items]
Total ending loans balance	0	156
Non-owner occupied, nonfarm nonresidential properties | Greater Than 89 Days Past Due
Financing Receivable, Past Due [Line Items]
Total ending loans balance	1,792	10,184
Non-owner occupied, nonfarm nonresidential properties | Total Past Due
Financing Receivable, Past Due [Line Items]
Total ending loans balance	1,792	10,654
Non-owner occupied, nonfarm nonresidential properties | Loans Not Past Due
Financing Receivable, Past Due [Line Items]
Total ending loans balance	661,270	630,291
1-4 Family Construction
Financing Receivable, Past Due [Line Items]
Total ending loans balance	37,822	27,768
1-4 Family Construction | 30 - 59 Days Past Due
Financing Receivable, Past Due [Line Items]
Total ending loans balance	0	0
1-4 Family Construction | 60 - 89 Days Past Due
Financing Receivable, Past Due [Line Items]
Total ending loans balance	0	0
1-4 Family Construction | Greater Than 89 Days Past Due
Financing Receivable, Past Due [Line Items]
Total ending loans balance	0	0
1-4 Family Construction | Total Past Due
Financing Receivable, Past Due [Line Items]
Total ending loans balance	0	0
1-4 Family Construction | Loans Not Past Due
Financing Receivable, Past Due [Line Items]
Total ending loans balance	37,822	27,768
Home equity lines of credit
Financing Receivable, Past Due [Line Items]
Total ending loans balance	104,517	109,444
Home equity lines of credit | 30 - 59 Days Past Due
Financing Receivable, Past Due [Line Items]
Total ending loans balance	506	166
Home equity lines of credit | 60 - 89 Days Past Due
Financing Receivable, Past Due [Line Items]
Total ending loans balance	50	235
Home equity lines of credit | Greater Than 89 Days Past Due
Financing Receivable, Past Due [Line Items]
Total ending loans balance	172	486
Home equity lines of credit | Total Past Due
Financing Receivable, Past Due [Line Items]
Total ending loans balance	728	887
Home equity lines of credit | Loans Not Past Due
Financing Receivable, Past Due [Line Items]
Total ending loans balance	103,789	108,557
Residential Mortgages secured by first liens
Financing Receivable, Past Due [Line Items]
Total ending loans balance	826,729	777,030
Residential Mortgages secured by first liens | 30 - 59 Days Past Due
Financing Receivable, Past Due [Line Items]
Total ending loans balance	1,286	2,834
Residential Mortgages secured by first liens | 60 - 89 Days Past Due
Financing Receivable, Past Due [Line Items]
Total ending loans balance	1,145	629
Residential Mortgages secured by first liens | Greater Than 89 Days Past Due
Financing Receivable, Past Due [Line Items]
Total ending loans balance	1,647	1,911
Residential Mortgages secured by first liens | Total Past Due
Financing Receivable, Past Due [Line Items]
Total ending loans balance	4,078	5,374
Residential Mortgages secured by first liens | Loans Not Past Due
Financing Receivable, Past Due [Line Items]
Total ending loans balance	822,651	771,656
Residential Mortgages secured by junior liens
Financing Receivable, Past Due [Line Items]
Total ending loans balance	56,689	53,726
Residential Mortgages secured by junior liens | 30 - 59 Days Past Due
Financing Receivable, Past Due [Line Items]
Total ending loans balance	32	8
Residential Mortgages secured by junior liens | 60 - 89 Days Past Due
Financing Receivable, Past Due [Line Items]
Total ending loans balance	24	0
Residential Mortgages secured by junior liens | Greater Than 89 Days Past Due
Financing Receivable, Past Due [Line Items]
Total ending loans balance	1	66
Residential Mortgages secured by junior liens | Total Past Due
Financing Receivable, Past Due [Line Items]
Total ending loans balance	57	74
Residential Mortgages secured by junior liens | Loans Not Past Due
Financing Receivable, Past Due [Line Items]
Total ending loans balance	56,632	53,652
Other revolving credit plans
Financing Receivable, Past Due [Line Items]
Total ending loans balance	26,536	25,507
Other revolving credit plans | 30 - 59 Days Past Due
Financing Receivable, Past Due [Line Items]
Total ending loans balance	56	36
Other revolving credit plans | 60 - 89 Days Past Due
Financing Receivable, Past Due [Line Items]
Total ending loans balance	17	19
Other revolving credit plans | Greater Than 89 Days Past Due
Financing Receivable, Past Due [Line Items]
Total ending loans balance	4	0
Other revolving credit plans | Total Past Due
Financing Receivable, Past Due [Line Items]
Total ending loans balance	77	55
Other revolving credit plans | Loans Not Past Due
Financing Receivable, Past Due [Line Items]
Total ending loans balance	26,459	25,452
Automobile
Financing Receivable, Past Due [Line Items]
Total ending loans balance	20,862	25,344
Automobile | 30 - 59 Days Past Due
Financing Receivable, Past Due [Line Items]
Total ending loans balance	45	73
Automobile | 60 - 89 Days Past Due
Financing Receivable, Past Due [Line Items]
Total ending loans balance	3	0
Automobile | Greater Than 89 Days Past Due
Financing Receivable, Past Due [Line Items]
Total ending loans balance	23	9
Automobile | Total Past Due
Financing Receivable, Past Due [Line Items]
Total ending loans balance	71	82
Automobile | Loans Not Past Due
Financing Receivable, Past Due [Line Items]
Total ending loans balance	20,791	25,262
Other consumer
Financing Receivable, Past Due [Line Items]
Total ending loans balance	49,676	42,792
Other consumer | 30 - 59 Days Past Due
Financing Receivable, Past Due [Line Items]
Total ending loans balance	283	246
Other consumer | 60 - 89 Days Past Due
Financing Receivable, Past Due [Line Items]
Total ending loans balance	158	132
Other consumer | Greater Than 89 Days Past Due
Financing Receivable, Past Due [Line Items]
Total ending loans balance	295	245
Other consumer | Total Past Due
Financing Receivable, Past Due [Line Items]
Total ending loans balance	736	623
Other consumer | Loans Not Past Due
Financing Receivable, Past Due [Line Items]
Total ending loans balance	48,940	42,169
Credit cards
Financing Receivable, Past Due [Line Items]
Total ending loans balance		8,115
Credit cards | 30 - 59 Days Past Due
Financing Receivable, Past Due [Line Items]
Total ending loans balance	26	72
Credit cards | 60 - 89 Days Past Due
Financing Receivable, Past Due [Line Items]
Total ending loans balance	12	39
Credit cards | Greater Than 89 Days Past Due
Financing Receivable, Past Due [Line Items]
Total ending loans balance	23	34
Credit cards | Total Past Due
Financing Receivable, Past Due [Line Items]
Total ending loans balance	61	145
Credit cards | Loans Not Past Due
Financing Receivable, Past Due [Line Items]
Total ending loans balance	9,874	7,970
Overdrafts
Financing Receivable, Past Due [Line Items]
Total ending loans balance		336
Overdrafts | 30 - 59 Days Past Due
Financing Receivable, Past Due [Line Items]
Total ending loans balance	0	0
Overdrafts | 60 - 89 Days Past Due
Financing Receivable, Past Due [Line Items]
Total ending loans balance	0	0
Overdrafts | Greater Than 89 Days Past Due
Financing Receivable, Past Due [Line Items]
Total ending loans balance	0	0
Overdrafts | Total Past Due
Financing Receivable, Past Due [Line Items]
Total ending loans balance	0	0
Overdrafts | Loans Not Past Due
Financing Receivable, Past Due [Line Items]
Total ending loans balance	$ 278	$ 336