Loans - Risk Categories of Loans by Class of Loans (Details) - USD ($) $ in Thousands	Mar. 31, 2022	Dec. 31, 2021
Financing Receivable, Credit Quality Indicator [Line Items]
Current fiscal year	$ 322,796	$ 1,563,032
One year prior to current fiscal year	1,751,081	745,584
Two years prior to current fiscal year	768,351	751,942
Three years prior to current fiscal year	756,406	581,648
Four years prior to current fiscal year	551,150	423,022
Prior	1,571,242	1,181,217
Revolving	730,191	678,584
Total	6,451,217	5,925,029
Pass
Financing Receivable, Credit Quality Indicator [Line Items]
Current fiscal year	322,796	1,562,502
One year prior to current fiscal year	1,750,126	716,570
Two years prior to current fiscal year	740,157	729,697
Three years prior to current fiscal year	732,595	549,567
Four years prior to current fiscal year	519,701	408,614
Prior	1,509,883	1,125,909
Revolving	723,635	672,256
Total	6,298,893	5,765,115
Special Mention
Financing Receivable, Credit Quality Indicator [Line Items]
Current fiscal year	0	530
One year prior to current fiscal year	511	22,138
Two years prior to current fiscal year	21,463	6,645
Three years prior to current fiscal year	6,708	993
Four years prior to current fiscal year	927	925
Prior	14,362	18,430
Revolving	2,208	2,607
Total	46,179	52,268
Substandard
Financing Receivable, Credit Quality Indicator [Line Items]
Current fiscal year	0	0
One year prior to current fiscal year	437	5,487
Two years prior to current fiscal year	5,303	5,632
Three years prior to current fiscal year	7,825	26,800
Four years prior to current fiscal year	25,305	6,701
Prior	29,453	22,515
Revolving	1,015	648
Total	69,338	67,783
Substandard Impaired
Financing Receivable, Credit Quality Indicator [Line Items]
Current fiscal year	0	0
One year prior to current fiscal year	7	1,389
Two years prior to current fiscal year	1,428	9,968
Three years prior to current fiscal year	9,278	4,288
Four years prior to current fiscal year	5,217	6,782
Prior	17,544	14,363
Revolving	3,333	3,073
Total	36,807	39,863
Doubtful
Financing Receivable, Credit Quality Indicator [Line Items]
Current fiscal year	0	0
One year prior to current fiscal year	0	0
Two years prior to current fiscal year	0	0
Three years prior to current fiscal year	0	0
Four years prior to current fiscal year	0	0
Prior	0	0
Revolving	0	0
Total	0	0
Construction and land development
Financing Receivable, Credit Quality Indicator [Line Items]
Current fiscal year	15,252	94,318
One year prior to current fiscal year	118,289	23,860
Two years prior to current fiscal year	22,227	38,058
Three years prior to current fiscal year	30,059	25,729
Four years prior to current fiscal year	16,441	3,995
Prior	16,766	15,515
Revolving	40,387	29,349
Total	259,421	230,824
Construction and land development | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
Current fiscal year	15,252	94,318
One year prior to current fiscal year	118,289	23,860
Two years prior to current fiscal year	22,227	38,058
Three years prior to current fiscal year	30,059	25,507
Four years prior to current fiscal year	16,221	3,995
Prior	16,738	15,466
Revolving	40,387	29,349
Total	259,173	230,553
Construction and land development | Special Mention
Financing Receivable, Credit Quality Indicator [Line Items]
Current fiscal year	0	0
One year prior to current fiscal year	0	0
Two years prior to current fiscal year	0	0
Three years prior to current fiscal year	0	0
Four years prior to current fiscal year	0	0
Prior	0	0
Revolving	0	0
Total	0	0
Construction and land development | Substandard
Financing Receivable, Credit Quality Indicator [Line Items]
Current fiscal year	0	0
One year prior to current fiscal year	0	0
Two years prior to current fiscal year	0	0
Three years prior to current fiscal year	0	0
Four years prior to current fiscal year	0	0
Prior	7	0
Revolving	0	0
Total	7	0
Construction and land development | Substandard Impaired
Financing Receivable, Credit Quality Indicator [Line Items]
Current fiscal year	0	0
One year prior to current fiscal year	0	0
Two years prior to current fiscal year	0	0
Three years prior to current fiscal year	0	222
Four years prior to current fiscal year	220	0
Prior	21	49
Revolving	0	0
Total	241	271
Construction and land development | Doubtful
Financing Receivable, Credit Quality Indicator [Line Items]
Current fiscal year	0	0
One year prior to current fiscal year	0	0
Two years prior to current fiscal year	0	0
Three years prior to current fiscal year	0	0
Four years prior to current fiscal year	0	0
Prior	0	0
Revolving	0	0
Total	0	0
Commercial real estate - owner-occupied
Financing Receivable, Credit Quality Indicator [Line Items]
Current fiscal year	57,482	205,404
One year prior to current fiscal year	216,122	160,959
Two years prior to current fiscal year	168,302	187,898
Three years prior to current fiscal year	200,202	133,312
Four years prior to current fiscal year	129,090	129,867
Prior	501,538	370,329
Revolving	11,779	10,005
Total	1,284,515	1,197,774
Commercial real estate - owner-occupied | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
Current fiscal year	57,482	205,404
One year prior to current fiscal year	216,122	154,432
Two years prior to current fiscal year	161,838	179,786
Three years prior to current fiscal year	192,208	132,353
Four years prior to current fiscal year	128,139	125,763
Prior	492,637	363,986
Revolving	11,429	10,005
Total	1,259,855	1,171,729
Commercial real estate - owner-occupied | Special Mention
Financing Receivable, Credit Quality Indicator [Line Items]
Current fiscal year	0	0
One year prior to current fiscal year	0	6,527
Two years prior to current fiscal year	6,464	5,370
Three years prior to current fiscal year	5,322	649
Four years prior to current fiscal year	641	218
Prior	1,528	3,250
Revolving	0	0
Total	13,955	16,014
Commercial real estate - owner-occupied | Substandard
Financing Receivable, Credit Quality Indicator [Line Items]
Current fiscal year	0	0
One year prior to current fiscal year	0	0
Two years prior to current fiscal year	0	0
Three years prior to current fiscal year	0	0
Four years prior to current fiscal year	0	3,290
Prior	5,359	1,610
Revolving	350	0
Total	5,709	4,900
Commercial real estate - owner-occupied | Substandard Impaired
Financing Receivable, Credit Quality Indicator [Line Items]
Current fiscal year	0	0
One year prior to current fiscal year	0	0
Two years prior to current fiscal year	0	2,742
Three years prior to current fiscal year	2,672	310
Four years prior to current fiscal year	310	596
Prior	2,014	1,483
Revolving	0	0
Total	4,996	5,131
Commercial real estate - owner-occupied | Doubtful
Financing Receivable, Credit Quality Indicator [Line Items]
Current fiscal year	0	0
One year prior to current fiscal year	0	0
Two years prior to current fiscal year	0	0
Three years prior to current fiscal year	0	0
Four years prior to current fiscal year	0	0
Prior	0	0
Revolving	0	0
Total	0	0
Commercial real estate - non owner-occupied
Financing Receivable, Credit Quality Indicator [Line Items]
Current fiscal year	174,966	395,308
One year prior to current fiscal year	415,704	213,644
Two years prior to current fiscal year	233,724	303,723
Three years prior to current fiscal year	313,889	209,545
Four years prior to current fiscal year	209,509	113,505
Prior	610,795	494,237
Revolving	7,563	6,477
Total	1,966,150	1,736,439
Commercial real estate - non owner-occupied | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
Current fiscal year	174,966	395,308
One year prior to current fiscal year	415,704	207,824
Two years prior to current fiscal year	227,927	298,021
Three years prior to current fiscal year	305,852	186,339
Four years prior to current fiscal year	186,363	110,990
Prior	578,279	460,435
Revolving	7,563	6,477
Total	1,896,654	1,665,394
Commercial real estate - non owner-occupied | Special Mention
Financing Receivable, Credit Quality Indicator [Line Items]
Current fiscal year	0	0
One year prior to current fiscal year	0	0
Two years prior to current fiscal year	0	844
Three years prior to current fiscal year	837	0
Four years prior to current fiscal year	0	289
Prior	10,640	13,850
Revolving	0	0
Total	11,477	14,983
Commercial real estate - non owner-occupied | Substandard
Financing Receivable, Credit Quality Indicator [Line Items]
Current fiscal year	0	0
One year prior to current fiscal year	0	4,776
Two years prior to current fiscal year	4,753	3,009
Three years prior to current fiscal year	5,351	23,206
Four years prior to current fiscal year	23,146	1,900
Prior	19,242	17,266
Revolving	0	0
Total	52,492	50,157
Commercial real estate - non owner-occupied | Substandard Impaired
Financing Receivable, Credit Quality Indicator [Line Items]
Current fiscal year	0	0
One year prior to current fiscal year	0	1,044
Two years prior to current fiscal year	1,044	1,849
Three years prior to current fiscal year	1,849	0
Four years prior to current fiscal year	0	326
Prior	2,634	2,686
Revolving	0	0
Total	5,527	5,905
Commercial real estate - non owner-occupied | Doubtful
Financing Receivable, Credit Quality Indicator [Line Items]
Current fiscal year	0	0
One year prior to current fiscal year	0	0
Two years prior to current fiscal year	0	0
Three years prior to current fiscal year	0	0
Four years prior to current fiscal year	0	0
Prior	0	0
Revolving	0	0
Total	0	0
Residential real estate
Financing Receivable, Credit Quality Indicator [Line Items]
Current fiscal year	14,211	394,547
One year prior to current fiscal year	564,750	114,853
Two years prior to current fiscal year	121,445	91,290
Three years prior to current fiscal year	90,554	119,945
Four years prior to current fiscal year	110,519	123,029
Prior	323,950	224,122
Revolving	374,216	357,568
Total	1,599,645	1,425,354
Residential real estate | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
Current fiscal year	14,211	394,547
One year prior to current fiscal year	564,750	114,364
Two years prior to current fiscal year	120,963	90,566
Three years prior to current fiscal year	90,420	119,836
Four years prior to current fiscal year	110,413	118,556
Prior	311,573	213,950
Revolving	370,928	354,439
Total	1,583,258	1,406,258
Residential real estate | Special Mention
Financing Receivable, Credit Quality Indicator [Line Items]
Current fiscal year	0	0
One year prior to current fiscal year	0	0
Two years prior to current fiscal year	0	0
Three years prior to current fiscal year	0	70
Four years prior to current fiscal year	13	0
Prior	1,120	1,243
Revolving	75	532
Total	1,208	1,845
Residential real estate | Substandard
Financing Receivable, Credit Quality Indicator [Line Items]
Current fiscal year	0	0
One year prior to current fiscal year	0	340
Two years prior to current fiscal year	338	0
Three years prior to current fiscal year	0	0
Four years prior to current fiscal year	55	58
Prior	1,480	422
Revolving	201	86
Total	2,074	906
Residential real estate | Substandard Impaired
Financing Receivable, Credit Quality Indicator [Line Items]
Current fiscal year	0	0
One year prior to current fiscal year	0	149
Two years prior to current fiscal year	144	724
Three years prior to current fiscal year	134	39
Four years prior to current fiscal year	38	4,415
Prior	9,777	8,507
Revolving	3,012	2,511
Total	13,105	16,345
Residential real estate | Doubtful
Financing Receivable, Credit Quality Indicator [Line Items]
Current fiscal year	0	0
One year prior to current fiscal year	0	0
Two years prior to current fiscal year	0	0
Three years prior to current fiscal year	0	0
Four years prior to current fiscal year	0	0
Prior	0	0
Revolving	0	0
Total	0	0
Commercial and financial
Financing Receivable, Credit Quality Indicator [Line Items]
Current fiscal year	51,836	341,356
One year prior to current fiscal year	351,527	196,831
Two years prior to current fiscal year	191,698	104,238
Three years prior to current fiscal year	98,036	75,757
Four years prior to current fiscal year	70,248	42,389
Prior	96,683	60,874
Revolving	272,478	247,911
Total	1,132,506	1,069,356
Commercial and financial | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
Current fiscal year	51,836	340,826
One year prior to current fiscal year	351,023	180,677
Two years prior to current fiscal year	176,311	97,072
Three years prior to current fiscal year	90,587	68,232
Four years prior to current fiscal year	63,294	39,331
Prior	89,736	56,053
Revolving	271,721	246,568
Total	1,094,508	1,028,759
Commercial and financial | Special Mention
Financing Receivable, Credit Quality Indicator [Line Items]
Current fiscal year	0	530
One year prior to current fiscal year	504	15,587
Two years prior to current fiscal year	14,956	0
Three years prior to current fiscal year	449	237
Four years prior to current fiscal year	235	251
Prior	637	84
Revolving	385	876
Total	17,166	17,565
Commercial and financial | Substandard
Financing Receivable, Credit Quality Indicator [Line Items]
Current fiscal year	0	0
One year prior to current fiscal year	0	371
Two years prior to current fiscal year	212	2,605
Three years prior to current fiscal year	2,466	3,594
Four years prior to current fiscal year	2,104	1,436
Prior	3,365	3,217
Revolving	273	339
Total	8,420	11,562
Commercial and financial | Substandard Impaired
Financing Receivable, Credit Quality Indicator [Line Items]
Current fiscal year	0	0
One year prior to current fiscal year	0	196
Two years prior to current fiscal year	219	4,561
Three years prior to current fiscal year	4,534	3,694
Four years prior to current fiscal year	4,615	1,371
Prior	2,945	1,520
Revolving	99	128
Total	12,412	11,470
Commercial and financial | Doubtful
Financing Receivable, Credit Quality Indicator [Line Items]
Current fiscal year	0	0
One year prior to current fiscal year	0	0
Two years prior to current fiscal year	0	0
Three years prior to current fiscal year	0	0
Four years prior to current fiscal year	0	0
Prior	0	0
Revolving	0	0
Total	0	0
Consumer
Financing Receivable, Credit Quality Indicator [Line Items]
Current fiscal year	9,049	45,063
One year prior to current fiscal year	47,385	31,366
Two years prior to current fiscal year	29,003	26,735
Three years prior to current fiscal year	23,666	17,360
Four years prior to current fiscal year	15,343	10,237
Prior	21,510	16,140
Revolving	23,768	27,274
Total	169,724	174,175
Consumer | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
Current fiscal year	9,049	45,063
One year prior to current fiscal year	46,934	31,342
Two years prior to current fiscal year	28,939	26,194
Three years prior to current fiscal year	23,469	17,300
Four years prior to current fiscal year	15,271	9,979
Prior	20,920	16,019
Revolving	21,607	25,418
Total	166,189	171,315
Consumer | Special Mention
Financing Receivable, Credit Quality Indicator [Line Items]
Current fiscal year	0	0
One year prior to current fiscal year	7	24
Two years prior to current fiscal year	43	431
Three years prior to current fiscal year	100	37
Four years prior to current fiscal year	38	167
Prior	437	3
Revolving	1,748	1,199
Total	2,373	1,861
Consumer | Substandard
Financing Receivable, Credit Quality Indicator [Line Items]
Current fiscal year	0	0
One year prior to current fiscal year	437	0
Two years prior to current fiscal year	0	18
Three years prior to current fiscal year	8	0
Four years prior to current fiscal year	0	17
Prior	0	0
Revolving	191	223
Total	636	258
Consumer | Substandard Impaired
Financing Receivable, Credit Quality Indicator [Line Items]
Current fiscal year	0	0
One year prior to current fiscal year	7	0
Two years prior to current fiscal year	21	92
Three years prior to current fiscal year	89	23
Four years prior to current fiscal year	34	74
Prior	153	118
Revolving	222	434
Total	526	741
Consumer | Doubtful
Financing Receivable, Credit Quality Indicator [Line Items]
Current fiscal year	0	0
One year prior to current fiscal year	0	0
Two years prior to current fiscal year	0	0
Three years prior to current fiscal year	0	0
Four years prior to current fiscal year	0	0
Prior	0	0
Revolving	0	0
Total	0	0
Paycheck Protection Program
Financing Receivable, Credit Quality Indicator [Line Items]
Current fiscal year	0	87,036
One year prior to current fiscal year	37,304	4,071
Two years prior to current fiscal year	1,952	0
Three years prior to current fiscal year	0	0
Four years prior to current fiscal year	0	0
Prior	0	0
Revolving	0	0
Total	39,256	91,107
Paycheck Protection Program | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
Current fiscal year	0	87,036
One year prior to current fiscal year	37,304	4,071
Two years prior to current fiscal year	1,952	0
Three years prior to current fiscal year	0	0
Four years prior to current fiscal year	0	0
Prior	0	0
Revolving	0	0
Total	$ 39,256	$ 91,107