Loans and Allowance for Credit Losses - Loans - Credit Quality Indicators (Details) - USD ($) $ in Thousands	3 Months Ended		12 Months Ended
	Mar. 31, 2024	Mar. 31, 2023	Dec. 31, 2023
Financing Receivable, Recorded Investment [Line Items]
2024	$ 123,799		$ 745,264
2023	749,354		1,004,557
2022	1,004,093		625,463
2021	602,650		446,798
2020	436,417		273,438
Prior	1,049,198		809,335
Revolving Loans Amortized Cost Basis	351,938		347,937
Loans, net of unearned interest	4,317,449		4,252,792
Gross charge offs
Total	(50)	$ (150)
Current period recoveries
Total	6	37
Performing Financial Instruments
Financing Receivable, Recorded Investment [Line Items]
2024	27,062		160,995
2023	147,004		153,957
2022	149,585		112,259
2021	109,827		90,655
2020	87,495		28,086
Prior	198,049		179,001
Revolving Loans Amortized Cost Basis	87,275		90,526
Loans, net of unearned interest	806,297		815,479
Nonperforming Financial Instruments
Financing Receivable, Recorded Investment [Line Items]
2024	0		0
2023	178		0
2022	0		93
2021	79		1,470
2020	1,666		0
Prior	6,129		3,998
Revolving Loans Amortized Cost Basis	98		0
Loans, net of unearned interest	8,150		5,561
Pass
Financing Receivable, Recorded Investment [Line Items]
2024	96,737		584,075
2023	601,905		844,729
2022	851,023		510,017
2021	491,665		350,064
2020	342,299		238,887
Prior	809,082		592,074
Revolving Loans Amortized Cost Basis	261,541		250,237
Loans, net of unearned interest	3,454,252		3,370,083
Special mention
Financing Receivable, Recorded Investment [Line Items]
2024	0		194
2023	267		89
2022	495		2,224
2021	282		1,447
2020	1,811		6,236
Prior	18,687		12,682
Revolving Loans Amortized Cost Basis	2,463		4,577
Loans, net of unearned interest	24,005		27,449
Substandard or lower
Financing Receivable, Recorded Investment [Line Items]
2024	0		0
2023	0		5,782
2022	2,990		870
2021	797		3,162
2020	3,146		229
Prior	17,251		21,580
Revolving Loans Amortized Cost Basis	561		2,597
Loans, net of unearned interest	24,745		34,220
Commercial real estate
Financing Receivable, Recorded Investment [Line Items]
2024	49,466		271,849
2023	290,158		562,010
2022	571,424		387,119
2021	372,845		300,908
2020	296,826		184,672
Prior	719,837		556,153
Revolving Loans Amortized Cost Basis	43,762		38,495
Loans, net of unearned interest	2,344,318		2,301,206
Gross charge offs
2024			0
2023			0
2022			0
2021			0
2020			0
Prior			(16)
Revolving Loans Amortized Cost Basis			0
Total			(16)
Net charge offs
2024			0
2023			0
2022			0
2021			0
2020			0
Prior			(16)
Revolving Loans Amortized Cost Basis			0
Total			(16)
Commercial real estate | Pass
Financing Receivable, Recorded Investment [Line Items]
2024	49,466		271,655
2023	289,970		556,801
2022	568,000		386,911
2021	372,639		297,746
2020	293,680		178,434
Prior	688,117		528,326
Revolving Loans Amortized Cost Basis	43,525		38,261
Loans, net of unearned interest	2,305,397		2,258,134
Commercial real estate | Special mention
Financing Receivable, Recorded Investment [Line Items]
2024	0		194
2023	188		0
2022	434		0
2021	0		0
2020	0		6,009
Prior	16,407		10,482
Revolving Loans Amortized Cost Basis	191		186
Loans, net of unearned interest	17,220		16,871
Commercial real estate | Substandard or lower
Financing Receivable, Recorded Investment [Line Items]
2024	0		0
2023	0		5,209
2022	2,990		208
2021	206		3,162
2020	3,146		229
Prior	15,313		17,345
Revolving Loans Amortized Cost Basis	46		48
Loans, net of unearned interest	21,701		26,201
Commercial and industrial
Financing Receivable, Recorded Investment [Line Items]
2024	33,909		158,824
2023	147,311		106,803
2022	97,374		71,334
2021	63,424		29,961
2020	28,200		50,433
Prior	109,159		62,070
Revolving Loans Amortized Cost Basis	192,018		195,654
Loans, net of unearned interest	671,395		675,079
Gross charge offs
2024			0
2023			(100)
2022			0
2021			(111)
2020			0
Prior			(27)
Revolving Loans Amortized Cost Basis			0
Total	0	(111)	(238)
Current period recoveries
Total	0	0
Net charge offs
2024			0
2023			(100)
2022			0
2021			(111)
2020			0
Prior			(27)
Revolving Loans Amortized Cost Basis			0
Total			(238)
Commercial and industrial | Pass
Financing Receivable, Recorded Investment [Line Items]
2024	33,909		158,824
2023	147,232		106,714
2022	97,313		68,448
2021	62,551		29,961
2020	28,200		50,206
Prior	104,941		57,892
Revolving Loans Amortized Cost Basis	189,231		188,714
Loans, net of unearned interest	663,377		660,759
Commercial and industrial | Special mention
Financing Receivable, Recorded Investment [Line Items]
2024	0		0
2023	79		89
2022	61		2,224
2021	282		0
2020	0		227
Prior	2,280		2,200
Revolving Loans Amortized Cost Basis	2,272		4,391
Loans, net of unearned interest	4,974		9,131
Commercial and industrial | Substandard or lower
Financing Receivable, Recorded Investment [Line Items]
2024	0		0
2023	0		0
2022	0		662
2021	591		0
2020	0		0
Prior	1,938		1,978
Revolving Loans Amortized Cost Basis	515		2,549
Loans, net of unearned interest	3,044		5,189
Construction
Financing Receivable, Recorded Investment [Line Items]
2024	13,362		153,596
2023	164,703		181,787
2022	185,710		54,658
2021	56,475		23,804
2020	22,230		10,247
Prior	16,024		8,113
Revolving Loans Amortized Cost Basis	28,785		23,262
Loans, net of unearned interest	487,289		455,467
Construction | Pass
Financing Receivable, Recorded Investment [Line Items]
2024	13,362		153,596
2023	164,703		181,214
2022	185,710		54,658
2021	56,475		22,357
2020	20,419		10,247
Prior	16,024		5,856
Revolving Loans Amortized Cost Basis	28,785		23,262
Loans, net of unearned interest	485,478		451,190
Construction | Special mention
Financing Receivable, Recorded Investment [Line Items]
2024	0		0
2023	0		0
2022	0		0
2021	0		1,447
2020	1,811		0
Prior	0		0
Revolving Loans Amortized Cost Basis	0		0
Loans, net of unearned interest	1,811		1,447
Construction | Substandard or lower
Financing Receivable, Recorded Investment [Line Items]
2024	0		0
2023	0		573
2022	0		0
2021	0		0
2020	0		0
Prior	0		2,257
Revolving Loans Amortized Cost Basis	0		0
Loans, net of unearned interest	0		2,830
Residential mortgage
Financing Receivable, Recorded Investment [Line Items]
2024	25,512		158,634
2023	145,931		153,203
2022	148,963		111,703
2021	109,315		91,852
2020	88,940		27,863
Prior	203,897		182,896
Revolving Loans Amortized Cost Basis	84,754		87,723
Loans, net of unearned interest	807,312		813,874
Gross charge offs
2024	0		0
2023	0		0
2022	(21)		0
2021	0		0
2020	0		0
Prior	(7)		(13)
Revolving Loans Amortized Cost Basis	0		0
Total	(28)		(13)
Current period recoveries
2024			0
2023			0
2022			0
2021			0
2020			0
Prior			38
Revolving Loans Amortized Cost Basis			0
Total			38
Net charge offs
2024	0		0
2023	0		0
2022	(21)		0
2021	0		0
2020	0		0
Prior	(7)		25
Revolving Loans Amortized Cost Basis	0		0
Total	(28)		25
Residential mortgage | Performing Financial Instruments
Financing Receivable, Recorded Investment [Line Items]
2024	25,512		158,634
2023	145,753		153,203
2022	148,963		111,610
2021	109,236		90,382
2020	87,274		27,863
Prior	197,768		178,898
Revolving Loans Amortized Cost Basis	84,656		87,723
Loans, net of unearned interest	799,162		808,313
Residential mortgage | Nonperforming Financial Instruments
Financing Receivable, Recorded Investment [Line Items]
2024	0		0
2023	178		0
2022	0		93
2021	79		1,470
2020	1,666		0
Prior	6,129		3,998
Revolving Loans Amortized Cost Basis	98		0
Loans, net of unearned interest	8,150		5,561
Consumer
Financing Receivable, Recorded Investment [Line Items]
2024	1,550		2,361
2023	1,251		754
2022	622		649
2021	591		273
2020	221		223
Prior	281		103
Revolving Loans Amortized Cost Basis	2,619		2,803
Loans, net of unearned interest	7,135		7,166
Gross charge offs
2024	(16)		(86)
2023	0		0
2022	(2)		(10)
2021	0		(9)
2020	0		0
Prior	(4)		(30)
Revolving Loans Amortized Cost Basis	0		0
Total	(22)	(19)	(135)
Current period recoveries
2024	5		26
2023	0		0
2022	0		0
2021	0		1
2020	0		0
Prior	1		5
Revolving Loans Amortized Cost Basis	0		0
Total	6	$ 7	32
Net charge offs
2024	(11)		(60)
2023	0		0
2022	(2)		(10)
2021	0		(8)
2020	0		0
Prior	(3)		(25)
Revolving Loans Amortized Cost Basis	0		0
Total	(16)		(103)
Consumer | Performing Financial Instruments
Financing Receivable, Recorded Investment [Line Items]
2024	1,550		2,361
2023	1,251		754
2022	622		649
2021	591		273
2020	221		223
Prior	281		103
Revolving Loans Amortized Cost Basis	2,619		2,803
Loans, net of unearned interest	7,135		$ 7,166
Consumer | Nonperforming Financial Instruments
Financing Receivable, Recorded Investment [Line Items]
2024	0
2023	0
2022	0
2021	0
2020	0
Prior	0
Revolving Loans Amortized Cost Basis	0
Loans, net of unearned interest	$ 0