Loans - Risk Categories of Loans by Class of Loans (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022	Dec. 31, 2022
Financing Receivable, Credit Quality Indicator [Line Items]
Current fiscal year	$ 719,759		$ 719,759		$ 1,771,386
One year prior to current fiscal year	2,288,921		2,288,921		1,972,420
Two years prior to current fiscal year	2,180,807		2,180,807		752,699
Three years prior to current fiscal year	839,310		839,310		749,534
Four years prior to current fiscal year	823,392		823,392		545,447
Prior	2,077,625		2,077,625		1,469,313
Revolving	1,081,372		1,081,372		883,925
Total	10,011,186		10,011,186		8,144,724
Current fiscal year, Charge Offs			215
One year prior to current fiscal year, Charge Offs			1,044
Two years prior to current fiscal year, Charge Offs			2,255
Three years prior to current fiscal year, Charge Offs			1,775
Four years prior to current fiscal year, Charge Offs			403
Prior, Charge Offs			12,957
Revolving, Charge Offs			819
Total, Charge Offs	13,123	$ 408	19,468	$ 1,525
Pass
Financing Receivable, Credit Quality Indicator [Line Items]
Current fiscal year	719,488		719,488		1,754,920
One year prior to current fiscal year	2,268,871		2,268,871		1,945,692
Two years prior to current fiscal year	2,139,198		2,139,198		722,206
Three years prior to current fiscal year	816,155		816,155		724,493
Four years prior to current fiscal year	796,586		796,586		529,942
Prior	2,004,084		2,004,084		1,430,636
Revolving	1,065,321		1,065,321		864,846
Total	9,809,703		9,809,703		7,972,735
Special Mention
Financing Receivable, Credit Quality Indicator [Line Items]
Current fiscal year	132		132		16,461
One year prior to current fiscal year	6,727		6,727		17,132
Two years prior to current fiscal year	5,578		5,578		3,254
Three years prior to current fiscal year	1,081		1,081		13,718
Four years prior to current fiscal year	2,624		2,624		2,770
Prior	27,996		27,996		8,506
Revolving	9,260		9,260		3,927
Total	53,398		53,398		65,768
Substandard
Financing Receivable, Credit Quality Indicator [Line Items]
Current fiscal year	0		0		0
One year prior to current fiscal year	10,635		10,635		9,486
Two years prior to current fiscal year	31,059		31,059		20,935
Three years prior to current fiscal year	19,702		19,702		8,929
Four years prior to current fiscal year	20,882		20,882		8,650
Prior	15,703		15,703		14,073
Revolving	2,862		2,862		13,199
Total	100,843		100,843		75,272
Substandard Impaired
Financing Receivable, Credit Quality Indicator [Line Items]
Current fiscal year	139		139		5
One year prior to current fiscal year	2,688		2,688		110
Two years prior to current fiscal year	4,972		4,972		6,304
Three years prior to current fiscal year	2,372		2,372		2,394
Four years prior to current fiscal year	3,300		3,300		4,085
Prior	29,842		29,842		16,098
Revolving	3,929		3,929		1,953
Total	47,242		47,242		30,949
Doubtful
Financing Receivable, Credit Quality Indicator [Line Items]
Current fiscal year	0		0		0
One year prior to current fiscal year	0		0		0
Two years prior to current fiscal year	0		0		0
Three years prior to current fiscal year	0		0		0
Four years prior to current fiscal year	0		0		0
Prior	0		0		0
Revolving	0		0		0
Total	0		0		0
Construction and land development
Financing Receivable, Credit Quality Indicator [Line Items]
Current fiscal year	58,254		58,254		237,727
One year prior to current fiscal year	291,887		291,887		219,469
Two years prior to current fiscal year	145,675		145,675		18,239
Three years prior to current fiscal year	28,682		28,682		27,753
Four years prior to current fiscal year	23,102		23,102		13,742
Prior	29,758		29,758		19,427
Revolving	216,378		216,378		50,975
Total	793,736		793,736		587,332
Current fiscal year, Charge Offs			0
One year prior to current fiscal year, Charge Offs			0
Two years prior to current fiscal year, Charge Offs			0
Three years prior to current fiscal year, Charge Offs			0
Four years prior to current fiscal year, Charge Offs			0
Prior, Charge Offs			0
Revolving, Charge Offs			0
Total, Charge Offs	0	0	0	0
Construction and land development | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
Current fiscal year	58,254		58,254		223,204
One year prior to current fiscal year	290,673		290,673		209,738
Two years prior to current fiscal year	134,906		134,906		18,239
Three years prior to current fiscal year	28,682		28,682		24,600
Four years prior to current fiscal year	23,102		23,102		12,783
Prior	29,307		29,307		19,022
Revolving	216,059		216,059		50,960
Total	780,983		780,983		558,546
Construction and land development | Special Mention
Financing Receivable, Credit Quality Indicator [Line Items]
Current fiscal year	0		0		14,523
One year prior to current fiscal year	1,214		1,214		452
Two years prior to current fiscal year	794		794		0
Three years prior to current fiscal year	0		0		3,153
Four years prior to current fiscal year	0		0		0
Prior	394		394		0
Revolving	200		200		15
Total	2,602		2,602		18,143
Construction and land development | Substandard
Financing Receivable, Credit Quality Indicator [Line Items]
Current fiscal year	0		0		0
One year prior to current fiscal year	0		0		9,227
Two years prior to current fiscal year	9,975		9,975		0
Three years prior to current fiscal year	0		0		0
Four years prior to current fiscal year	0		0		959
Prior	0		0		0
Revolving	0		0		0
Total	9,975		9,975		10,186
Construction and land development | Substandard Impaired
Financing Receivable, Credit Quality Indicator [Line Items]
Current fiscal year	0		0		0
One year prior to current fiscal year	0		0		52
Two years prior to current fiscal year	0		0		0
Three years prior to current fiscal year	0		0		0
Four years prior to current fiscal year	0		0		0
Prior	57		57		405
Revolving	119		119		0
Total	176		176		457
Construction and land development | Doubtful
Financing Receivable, Credit Quality Indicator [Line Items]
Current fiscal year	0		0		0
One year prior to current fiscal year	0		0		0
Two years prior to current fiscal year	0		0		0
Three years prior to current fiscal year	0		0		0
Four years prior to current fiscal year	0		0		0
Prior	0		0		0
Revolving	0		0		0
Total	0		0		0
Commercial real estate - owner occupied
Financing Receivable, Credit Quality Indicator [Line Items]
Current fiscal year	99,731		99,731		216,147
One year prior to current fiscal year	263,570		263,570		251,638
Two years prior to current fiscal year	300,701		300,701		183,111
Three years prior to current fiscal year	176,184		176,184		192,625
Four years prior to current fiscal year	194,068		194,068		124,983
Prior	592,176		592,176		477,545
Revolving	49,451		49,451		32,253
Total	1,675,881		1,675,881		1,478,302
Current fiscal year, Charge Offs			0
One year prior to current fiscal year, Charge Offs			0
Two years prior to current fiscal year, Charge Offs			0
Three years prior to current fiscal year, Charge Offs			0
Four years prior to current fiscal year, Charge Offs			0
Prior, Charge Offs			0
Revolving, Charge Offs			0
Total, Charge Offs	0	0	0	0
Commercial real estate - owner occupied | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
Current fiscal year	99,731		99,731		215,453
One year prior to current fiscal year	259,947		259,947		251,638
Two years prior to current fiscal year	300,315		300,315		180,081
Three years prior to current fiscal year	169,143		169,143		185,286
Four years prior to current fiscal year	186,034		186,034		121,568
Prior	569,304		569,304		467,963
Revolving	49,385		49,385		32,253
Total	1,633,859		1,633,859		1,454,242
Commercial real estate - owner occupied | Special Mention
Financing Receivable, Credit Quality Indicator [Line Items]
Current fiscal year	0		0		694
One year prior to current fiscal year	0		0		0
Two years prior to current fiscal year	350		350		2,363
Three years prior to current fiscal year	0		0		4,403
Four years prior to current fiscal year	871		871		2,548
Prior	9,252		9,252		2,869
Revolving	0		0		0
Total	10,473		10,473		12,877
Commercial real estate - owner occupied | Substandard
Financing Receivable, Credit Quality Indicator [Line Items]
Current fiscal year	0		0		0
One year prior to current fiscal year	2,775		2,775		0
Two years prior to current fiscal year	0		0		667
Three years prior to current fiscal year	6,377		6,377		2,625
Four years prior to current fiscal year	6,868		6,868		573
Prior	7,501		7,501		4,444
Revolving	66		66		0
Total	23,587		23,587		8,309
Commercial real estate - owner occupied | Substandard Impaired
Financing Receivable, Credit Quality Indicator [Line Items]
Current fiscal year	0		0		0
One year prior to current fiscal year	848		848		0
Two years prior to current fiscal year	36		36		0
Three years prior to current fiscal year	664		664		311
Four years prior to current fiscal year	295		295		294
Prior	6,119		6,119		2,269
Revolving	0		0		0
Total	7,962		7,962		2,874
Commercial real estate - owner occupied | Doubtful
Financing Receivable, Credit Quality Indicator [Line Items]
Current fiscal year	0		0		0
One year prior to current fiscal year	0		0		0
Two years prior to current fiscal year	0		0		0
Three years prior to current fiscal year	0		0		0
Four years prior to current fiscal year	0		0		0
Prior	0		0		0
Revolving	0		0		0
Total	0		0		0
Commercial real estate - non-owner occupied
Financing Receivable, Credit Quality Indicator [Line Items]
Current fiscal year	151,486		151,486		593,364
One year prior to current fiscal year	842,420		842,420		546,911
Two years prior to current fiscal year	655,525		655,525		252,787
Three years prior to current fiscal year	301,148		301,148		338,460
Four years prior to current fiscal year	406,447		406,447		233,622
Prior	891,421		891,421		589,304
Revolving	37,527		37,527		35,326
Total	3,285,974		3,285,974		2,589,774
Current fiscal year, Charge Offs			0
One year prior to current fiscal year, Charge Offs			0
Two years prior to current fiscal year, Charge Offs			0
Three years prior to current fiscal year, Charge Offs			0
Four years prior to current fiscal year, Charge Offs			0
Prior, Charge Offs			0
Revolving, Charge Offs			109
Total, Charge Offs	0	179	109	179
Commercial real estate - non-owner occupied | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
Current fiscal year	151,486		151,486		593,364
One year prior to current fiscal year	842,420		842,420		530,462
Two years prior to current fiscal year	653,228		653,228		231,693
Three years prior to current fiscal year	291,699		291,699		331,173
Four years prior to current fiscal year	396,142		396,142		228,077
Prior	865,181		865,181		575,656
Revolving	37,285		37,285		35,326
Total	3,237,441		3,237,441		2,525,751
Commercial real estate - non-owner occupied | Special Mention
Financing Receivable, Credit Quality Indicator [Line Items]
Current fiscal year	0		0		0
One year prior to current fiscal year	0		0		16,257
Two years prior to current fiscal year	2,108		2,108		735
Three years prior to current fiscal year	0		0		5,438
Four years prior to current fiscal year	0		0		0
Prior	13,992		13,992		4,975
Revolving	0		0		0
Total	16,100		16,100		27,405
Commercial real estate - non-owner occupied | Substandard
Financing Receivable, Credit Quality Indicator [Line Items]
Current fiscal year	0		0		0
One year prior to current fiscal year	0		0		192
Two years prior to current fiscal year	189		189		19,315
Three years prior to current fiscal year	8,383		8,383		0
Four years prior to current fiscal year	8,456		8,456		5,515
Prior	5,754		5,754		7,412
Revolving	242		242		0
Total	23,024		23,024		32,434
Commercial real estate - non-owner occupied | Substandard Impaired
Financing Receivable, Credit Quality Indicator [Line Items]
Current fiscal year	0		0		0
One year prior to current fiscal year	0		0		0
Two years prior to current fiscal year	0		0		1,044
Three years prior to current fiscal year	1,066		1,066		1,849
Four years prior to current fiscal year	1,849		1,849		30
Prior	6,494		6,494		1,261
Revolving	0		0		0
Total	9,409		9,409		4,184
Commercial real estate - non-owner occupied | Doubtful
Financing Receivable, Credit Quality Indicator [Line Items]
Current fiscal year	0		0		0
One year prior to current fiscal year	0		0		0
Two years prior to current fiscal year	0		0		0
Three years prior to current fiscal year	0		0		0
Four years prior to current fiscal year	0		0		0
Prior	0		0		0
Revolving	0		0		0
Total	0		0		0
Residential real estate
Financing Receivable, Credit Quality Indicator [Line Items]
Current fiscal year	149,013		149,013		270,054
One year prior to current fiscal year	439,094		439,094		552,950
Two years prior to current fiscal year	647,052		647,052		122,062
Three years prior to current fiscal year	164,244		164,244		77,132
Four years prior to current fiscal year	100,478		100,478		98,008
Prior	435,022		435,022		302,994
Revolving	484,000		484,000		426,303
Total	2,418,903		2,418,903		1,849,503
Current fiscal year, Charge Offs			0
One year prior to current fiscal year, Charge Offs			0
Two years prior to current fiscal year, Charge Offs			0
Three years prior to current fiscal year, Charge Offs			0
Four years prior to current fiscal year, Charge Offs			0
Prior, Charge Offs			159
Revolving, Charge Offs			153
Total, Charge Offs	44	0	312	1
Residential real estate | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
Current fiscal year	149,010		149,010		270,054
One year prior to current fiscal year	439,061		439,061		552,950
Two years prior to current fiscal year	646,121		646,121		121,879
Three years prior to current fiscal year	164,118		164,118		77,100
Four years prior to current fiscal year	98,896		98,896		97,900
Prior	424,737		424,737		292,867
Revolving	475,311		475,311		423,764
Total	2,397,254		2,397,254		1,836,514
Residential real estate | Special Mention
Financing Receivable, Credit Quality Indicator [Line Items]
Current fiscal year	3		3		0
One year prior to current fiscal year	33		33		0
Two years prior to current fiscal year	70		70		50
Three years prior to current fiscal year	0		0		0
Four years prior to current fiscal year	1,267		1,267		25
Prior	769		769		269
Revolving	5,467		5,467		884
Total	7,609		7,609		1,228
Residential real estate | Substandard
Financing Receivable, Credit Quality Indicator [Line Items]
Current fiscal year	0		0		0
One year prior to current fiscal year	0		0		0
Two years prior to current fiscal year	0		0		0
Three years prior to current fiscal year	0		0		0
Four years prior to current fiscal year	0		0		0
Prior	0		0		343
Revolving	768		768		85
Total	768		768		428
Residential real estate | Substandard Impaired
Financing Receivable, Credit Quality Indicator [Line Items]
Current fiscal year	0		0		0
One year prior to current fiscal year	0		0		0
Two years prior to current fiscal year	861		861		133
Three years prior to current fiscal year	126		126		32
Four years prior to current fiscal year	315		315		83
Prior	9,516		9,516		9,515
Revolving	2,454		2,454		1,570
Total	13,272		13,272		11,333
Residential real estate | Doubtful
Financing Receivable, Credit Quality Indicator [Line Items]
Current fiscal year	0		0		0
One year prior to current fiscal year	0		0		0
Two years prior to current fiscal year	0		0		0
Three years prior to current fiscal year	0		0		0
Four years prior to current fiscal year	0		0		0
Prior	0		0		0
Revolving	0		0		0
Total	0		0		0
Commercial and financial
Financing Receivable, Credit Quality Indicator [Line Items]
Current fiscal year	232,740		232,740		361,082
One year prior to current fiscal year	388,489		388,489		320,855
Two years prior to current fiscal year	378,522		378,522		146,607
Three years prior to current fiscal year	145,908		145,908		84,487
Four years prior to current fiscal year	77,655		77,655		63,364
Prior	108,279		108,279		63,135
Revolving	252,457		252,457		309,106
Total	1,584,050		1,584,050		1,348,636
Current fiscal year, Charge Offs			206
One year prior to current fiscal year, Charge Offs			117
Two years prior to current fiscal year, Charge Offs			109
Three years prior to current fiscal year, Charge Offs			1,484
Four years prior to current fiscal year, Charge Offs			265
Prior, Charge Offs			12,584
Revolving, Charge Offs			418
Total, Charge Offs	11,814	77	15,183	899
Commercial and financial | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
Current fiscal year	232,472		232,472		359,833
One year prior to current fiscal year	377,084		377,084		320,307
Two years prior to current fiscal year	354,060		354,060		140,450
Three years prior to current fiscal year	139,626		139,626		77,562
Four years prior to current fiscal year	70,860		70,860		57,924
Prior	94,921		94,921		58,648
Revolving	246,568		246,568		292,818
Total	1,515,591		1,515,591		1,307,542
Commercial and financial | Special Mention
Financing Receivable, Credit Quality Indicator [Line Items]
Current fiscal year	129		129		1,244
One year prior to current fiscal year	3,545		3,545		423
Two years prior to current fiscal year	1,086		1,086		106
Three years prior to current fiscal year	1,002		1,002		474
Four years prior to current fiscal year	461		461		195
Prior	3,583		3,583		259
Revolving	2,842		2,842		2,998
Total	12,648		12,648		5,699
Commercial and financial | Substandard
Financing Receivable, Credit Quality Indicator [Line Items]
Current fiscal year	0		0		0
One year prior to current fiscal year	7,860		7,860		67
Two years prior to current fiscal year	20,895		20,895		942
Three years prior to current fiscal year	4,942		4,942		6,304
Four years prior to current fiscal year	5,558		5,558		1,603
Prior	2,448		2,448		1,683
Revolving	1,786		1,786		13,114
Total	43,489		43,489		23,713
Commercial and financial | Substandard Impaired
Financing Receivable, Credit Quality Indicator [Line Items]
Current fiscal year	139		139		5
One year prior to current fiscal year	0		0		58
Two years prior to current fiscal year	2,481		2,481		5,109
Three years prior to current fiscal year	338		338		147
Four years prior to current fiscal year	776		776		3,642
Prior	7,327		7,327		2,545
Revolving	1,261		1,261		176
Total	12,322		12,322		11,682
Commercial and financial | Doubtful
Financing Receivable, Credit Quality Indicator [Line Items]
Current fiscal year	0		0		0
One year prior to current fiscal year	0		0		0
Two years prior to current fiscal year	0		0		0
Three years prior to current fiscal year	0		0		0
Four years prior to current fiscal year	0		0		0
Prior	0		0		0
Revolving	0		0		0
Total	0		0		0
Consumer
Financing Receivable, Credit Quality Indicator [Line Items]
Current fiscal year	28,535		28,535		93,012
One year prior to current fiscal year	63,461		63,461		77,889
Two years prior to current fiscal year	51,375		51,375		28,011
Three years prior to current fiscal year	20,999		20,999		29,077
Four years prior to current fiscal year	21,642		21,642		11,728
Prior	20,969		20,969		16,908
Revolving	41,559		41,559		29,962
Total	248,540		248,540		286,587
Current fiscal year, Charge Offs			9
One year prior to current fiscal year, Charge Offs			927
Two years prior to current fiscal year, Charge Offs			2,146
Three years prior to current fiscal year, Charge Offs			291
Four years prior to current fiscal year, Charge Offs			138
Prior, Charge Offs			214
Revolving, Charge Offs			139
Total, Charge Offs	1,265	$ 152	3,864	$ 446
Consumer | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
Current fiscal year	28,535		28,535		93,012
One year prior to current fiscal year	59,686		59,686		77,889
Two years prior to current fiscal year	48,611		48,611		27,982
Three years prior to current fiscal year	20,742		20,742		28,772
Four years prior to current fiscal year	21,552		21,552		11,690
Prior	20,634		20,634		16,480
Revolving	40,713		40,713		29,725
Total	240,473		240,473		285,550
Consumer | Special Mention
Financing Receivable, Credit Quality Indicator [Line Items]
Current fiscal year	0		0		0
One year prior to current fiscal year	1,935		1,935		0
Two years prior to current fiscal year	1,170		1,170		0
Three years prior to current fiscal year	79		79		250
Four years prior to current fiscal year	25		25		2
Prior	6		6		134
Revolving	751		751		30
Total	3,966		3,966		416
Consumer | Substandard
Financing Receivable, Credit Quality Indicator [Line Items]
Current fiscal year	0		0		0
One year prior to current fiscal year	0		0		0
Two years prior to current fiscal year	0		0		11
Three years prior to current fiscal year	0		0		0
Four years prior to current fiscal year	0		0		0
Prior	0		0		191
Revolving	0		0		0
Total	0		0		202
Consumer | Substandard Impaired
Financing Receivable, Credit Quality Indicator [Line Items]
Current fiscal year	0		0		0
One year prior to current fiscal year	1,840		1,840		0
Two years prior to current fiscal year	1,594		1,594		18
Three years prior to current fiscal year	178		178		55
Four years prior to current fiscal year	65		65		36
Prior	329		329		103
Revolving	95		95		207
Total	4,101		4,101		419
Consumer | Doubtful
Financing Receivable, Credit Quality Indicator [Line Items]
Current fiscal year	0		0		0
One year prior to current fiscal year	0		0		0
Two years prior to current fiscal year	0		0		0
Three years prior to current fiscal year	0		0		0
Four years prior to current fiscal year	0		0		0
Prior	0		0		0
Revolving	0		0		0
Total	0		0		0
PPP Loans
Financing Receivable, Credit Quality Indicator [Line Items]
Current fiscal year	0		0		0
One year prior to current fiscal year	0		0		2,708
Two years prior to current fiscal year	1,957		1,957		1,882
Three years prior to current fiscal year	2,145		2,145		0
Four years prior to current fiscal year	0		0		0
Prior	0		0		0
Revolving	0		0		0
Total	4,102		4,102		4,590
Current fiscal year, Charge Offs			0
One year prior to current fiscal year, Charge Offs			0
Two years prior to current fiscal year, Charge Offs			0
Three years prior to current fiscal year, Charge Offs			0
Four years prior to current fiscal year, Charge Offs			0
Prior, Charge Offs			0
Revolving, Charge Offs			0
Total, Charge Offs			0
PPP Loans | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
Current fiscal year	0		0		0
One year prior to current fiscal year	0		0		2,708
Two years prior to current fiscal year	1,957		1,957		1,882
Three years prior to current fiscal year	2,145		2,145		0
Four years prior to current fiscal year	0		0		0
Prior	0		0		0
Revolving	0		0		0
Total	4,102		4,102		4,590
PPP Loans | Substandard
Financing Receivable, Credit Quality Indicator [Line Items]
Current fiscal year	0		0		0
One year prior to current fiscal year	0		0		0
Two years prior to current fiscal year	0		0		0
Three years prior to current fiscal year	0		0		0
Four years prior to current fiscal year	0		0		0
Prior	0		0		0
Revolving	0		0		0
Total	0		0		0
PPP Loans | Substandard Impaired
Financing Receivable, Credit Quality Indicator [Line Items]
Current fiscal year	0		0		0
One year prior to current fiscal year	0		0		0
Two years prior to current fiscal year	0		0		0
Three years prior to current fiscal year	0		0		0
Four years prior to current fiscal year	0		0		0
Prior	0		0		0
Revolving	0		0		0
Total	$ 0		$ 0		$ 0