Loans and Allowance for Credit Losses - Risk category of loans by class of loans (Details) - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021
Loans and Leases Receivable Disclosure [Line Items]
Prior	$ 1,906,535	$ 1,457,032
Four years before current period	778,256	806,647
Three years before current period	763,347	1,009,864
Two years before current period	673,719	933,401
One year before current period	1,195,299	749,261
Current period	1,139,872	1,071,249
Revolving Loans Amort. Cost Basis	1,154,332	1,026,653
Revolving Loans Convert. to Term	24,272	11,491
Loans	7,635,632	7,065,598
Commercial
Loans and Leases Receivable Disclosure [Line Items]
Prior	184,661	190,978
Four years before current period	47,744	75,553
Three years before current period	56,537	106,291
Two years before current period	64,163	92,307
One year before current period	237,146	91,783
Current period	144,472	214,700
Revolving Loans Amort. Cost Basis	742,909	576,055
Revolving Loans Convert. to Term	9,717	6,650
Loans	1,487,349	1,354,317
Commercial | Pass
Loans and Leases Receivable Disclosure [Line Items]
Prior	177,307	180,877
Four years before current period	45,510	58,693
Three years before current period	56,011	103,058
Two years before current period	60,010	90,874
One year before current period	234,258	87,515
Current period	143,636	211,563
Revolving Loans Amort. Cost Basis	708,201	549,055
Revolving Loans Convert. to Term	8,570	6,023
Loans	1,433,503	1,287,658
Commercial | Watch
Loans and Leases Receivable Disclosure [Line Items]
Prior	6,022	5,896
Four years before current period	1,883	6,567
Three years before current period	250	1,020
Two years before current period	4,153	996
One year before current period	2,888	4,268
Current period	754	3,137
Revolving Loans Amort. Cost Basis	27,889	18,336
Revolving Loans Convert. to Term	0	627
Loans	43,839	40,847
Commercial | Special Mention
Loans and Leases Receivable Disclosure [Line Items]
Prior	0	0
Four years before current period	0	9,515
Three years before current period	0	363
Two years before current period	0	0
One year before current period	0	0
Current period	82	0
Revolving Loans Amort. Cost Basis	5,475	901
Revolving Loans Convert. to Term	0	0
Loans	5,557	10,779
Commercial | Substandard
Loans and Leases Receivable Disclosure [Line Items]
Prior	1,332	4,205
Four years before current period	351	778
Three years before current period	276	1,850
Two years before current period	0	437
One year before current period	0	0
Current period	0	0
Revolving Loans Amort. Cost Basis	1,344	7,763
Revolving Loans Convert. to Term	1,147	0
Loans	4,450	15,033
PPP loans
Loans and Leases Receivable Disclosure [Line Items]
Prior	0	0
Four years before current period	0	0
Three years before current period	0	0
Two years before current period	2,479	0
One year before current period	777	18,205
Current period	0	32,900
Revolving Loans Amort. Cost Basis	0	0
Revolving Loans Convert. to Term	0	0
Loans	3,256	51,105
PPP loans | Pass
Loans and Leases Receivable Disclosure [Line Items]
Prior	0	0
Four years before current period	0	0
Three years before current period	0	0
Two years before current period	2,479	0
One year before current period	777	16,840
Current period	0	32,900
Revolving Loans Amort. Cost Basis		0
Revolving Loans Convert. to Term		0
Loans	3,256	49,740
PPP loans | Special Mention
Loans and Leases Receivable Disclosure [Line Items]
Prior		0
Four years before current period		0
Three years before current period		0
Two years before current period		0
One year before current period		1,365
Current period		0
Revolving Loans Amort. Cost Basis		0
Revolving Loans Convert. to Term		0
Loans		1,365
Income producing - commercial real estate
Loans and Leases Receivable Disclosure [Line Items]
Prior	1,121,337	792,523
Four years before current period	446,427	407,154
Three years before current period	484,683	468,916
Two years before current period	340,900	549,175
One year before current period	542,143	372,272
Current period	744,328	549,356
Revolving Loans Amort. Cost Basis	239,765	245,902
Revolving Loans Convert. to Term	358	0
Loans	3,919,941	3,385,298
Income producing - commercial real estate | Pass
Loans and Leases Receivable Disclosure [Line Items]
Prior	778,683	572,550
Four years before current period	434,031	333,394
Three years before current period	480,474	418,489
Two years before current period	298,458	495,808
One year before current period	542,143	337,178
Current period	744,328	549,356
Revolving Loans Amort. Cost Basis	192,089	198,210
Revolving Loans Convert. to Term	358	0
Loans	3,470,564	2,904,985
Income producing - commercial real estate | Watch
Loans and Leases Receivable Disclosure [Line Items]
Prior	237,846	58,334
Four years before current period	5,190	73,760
Three years before current period	0	0
Two years before current period	35,707	43,561
One year before current period	0	35,094
Current period	0	0
Revolving Loans Amort. Cost Basis	0	0
Revolving Loans Convert. to Term	0	0
Loans	278,743	210,749
Income producing - commercial real estate | Special Mention
Loans and Leases Receivable Disclosure [Line Items]
Prior	44,195	101,580
Four years before current period	5,206	0
Three years before current period	4,209	41,936
Two years before current period	6,735	4,264
One year before current period	0	0
Current period	0	0
Revolving Loans Amort. Cost Basis	47,676	47,692
Revolving Loans Convert. to Term	0	0
Loans	108,021	195,472
Income producing - commercial real estate | Substandard
Loans and Leases Receivable Disclosure [Line Items]
Prior	60,613	60,059
Four years before current period	2,000	0
Three years before current period	0	8,491
Two years before current period	0	5,542
One year before current period	0	0
Current period	0	0
Revolving Loans Amort. Cost Basis	0	0
Revolving Loans Convert. to Term	0	0
Loans	62,613	74,092
Owner occupied - commercial real estate
Loans and Leases Receivable Disclosure [Line Items]
Prior	480,782	398,139
Four years before current period	191,646	132,268
Three years before current period	111,497	222,131
Two years before current period	40,562	90,752
One year before current period	206,595	41,135
Current period	41,765	184,529
Revolving Loans Amort. Cost Basis	24,240	16,900
Revolving Loans Convert. to Term	13,238	1,922
Loans	1,110,325	1,087,776
Owner occupied - commercial real estate | Pass
Loans and Leases Receivable Disclosure [Line Items]
Prior	444,153	353,471
Four years before current period	180,142	127,687
Three years before current period	106,902	210,348
Two years before current period	40,562	81,604
One year before current period	206,595	41,135
Current period	41,765	184,529
Revolving Loans Amort. Cost Basis	24,181	16,838
Revolving Loans Convert. to Term	13,238	1,922
Loans	1,057,538	1,017,534
Owner occupied - commercial real estate | Watch
Loans and Leases Receivable Disclosure [Line Items]
Prior	16,876	22,710
Four years before current period	11,504	4,581
Three years before current period	4,595	11,783
Two years before current period	0	7,026
One year before current period	0	0
Current period	0	0
Revolving Loans Amort. Cost Basis	59	62
Revolving Loans Convert. to Term	0	0
Loans	33,034	46,162
Owner occupied - commercial real estate | Special Mention
Loans and Leases Receivable Disclosure [Line Items]
Prior		0
Four years before current period		0
Three years before current period		0
Two years before current period		2,122
One year before current period		0
Current period		0
Revolving Loans Amort. Cost Basis		0
Revolving Loans Convert. to Term		0
Loans		2,122
Owner occupied - commercial real estate | Substandard
Loans and Leases Receivable Disclosure [Line Items]
Prior	19,753	21,958
Four years before current period	0	0
Three years before current period	0	0
Two years before current period	0	0
One year before current period	0	0
Current period	0	0
Revolving Loans Amort. Cost Basis	0	0
Revolving Loans Convert. to Term	0	0
Loans	19,753	21,958
Real estate mortgage - residential
Loans and Leases Receivable Disclosure [Line Items]
Prior	18,666	19,598
Four years before current period	12,438	5,854
Three years before current period	8,219	12,956
Two years before current period	2,640	15,627
One year before current period	16,307	3,436
Current period	14,731	16,495
Revolving Loans Amort. Cost Basis	0	0
Revolving Loans Convert. to Term	0	0
Loans	73,001	73,966
Real estate mortgage - residential | Pass
Loans and Leases Receivable Disclosure [Line Items]
Prior	13,930	14,645
Four years before current period	12,438	5,854
Three years before current period	8,219	12,956
Two years before current period	2,640	15,546
One year before current period	16,307	3,436
Current period	14,731	16,495
Revolving Loans Amort. Cost Basis	0	0
Revolving Loans Convert. to Term	0	0
Loans	68,265	68,932
Real estate mortgage - residential | Watch
Loans and Leases Receivable Disclosure [Line Items]
Prior	3,038	3,255
Four years before current period	0	0
Three years before current period	0	0
Two years before current period	0	0
One year before current period	0	0
Current period	0	0
Revolving Loans Amort. Cost Basis	0	0
Revolving Loans Convert. to Term	0	0
Loans	3,038	3,255
Real estate mortgage - residential | Substandard
Loans and Leases Receivable Disclosure [Line Items]
Prior	1,698	1,698
Four years before current period	0	0
Three years before current period	0	0
Two years before current period	0	81
One year before current period	0	0
Current period	0	0
Revolving Loans Amort. Cost Basis	0	0
Revolving Loans Convert. to Term	0	0
Loans	1,698	1,779
Construction - commercial and residential
Loans and Leases Receivable Disclosure [Line Items]
Prior	84,522	33,321
Four years before current period	71,841	183,674
Three years before current period	90,560	171,152
Two years before current period	189,023	145,692
One year before current period	191,127	160,952
Current period	159,771	71,799
Revolving Loans Amort. Cost Basis	90,911	127,956
Revolving Loans Convert. to Term	0	1,773
Loans	877,755	896,319
Construction - commercial and residential | Pass
Loans and Leases Receivable Disclosure [Line Items]
Prior	40,113	32,815
Four years before current period	18,669	139,756
Three years before current period	90,560	171,152
Two years before current period	189,023	142,599
One year before current period	191,127	160,952
Current period	159,771	71,799
Revolving Loans Amort. Cost Basis	90,911	127,956
Revolving Loans Convert. to Term	0	1,773
Loans	780,174	848,802
Construction - commercial and residential | Watch
Loans and Leases Receivable Disclosure [Line Items]
Prior	44,409	506
Four years before current period	53,172	43,918
Three years before current period	0	0
Two years before current period	0	0
One year before current period	0	0
Current period	0	0
Revolving Loans Amort. Cost Basis	0	0
Revolving Loans Convert. to Term	0	0
Loans	97,581	44,424
Construction - commercial and residential | Substandard
Loans and Leases Receivable Disclosure [Line Items]
Prior		0
Four years before current period		0
Three years before current period		0
Two years before current period		3,093
One year before current period		0
Current period		0
Revolving Loans Amort. Cost Basis		0
Revolving Loans Convert. to Term		0
Loans		3,093
Construction - C&I (owner occupied)
Loans and Leases Receivable Disclosure [Line Items]
Prior	14,816	20,390
Four years before current period	8,160	2,144
Three years before current period	11,810	28,418
Two years before current period	33,854	39,803
One year before current period	653	61,408
Current period	34,679	768
Revolving Loans Amort. Cost Basis	6,507	6,648
Revolving Loans Convert. to Term	0	0
Loans	110,479	159,579
Construction - C&I (owner occupied) | Pass
Loans and Leases Receivable Disclosure [Line Items]
Prior	13,792	19,710
Four years before current period	4,906	1,754
Three years before current period	4,367	25,163
Two years before current period	33,854	39,803
One year before current period	653	61,408
Current period	34,679	768
Revolving Loans Amort. Cost Basis	6,507	6,648
Revolving Loans Convert. to Term	0	0
Loans	98,758	155,254
Construction - C&I (owner occupied) | Watch
Loans and Leases Receivable Disclosure [Line Items]
Prior	1,024	680
Four years before current period	3,254	390
Three years before current period	7,443	3,255
Two years before current period	0	0
One year before current period	0	0
Current period	0	0
Revolving Loans Amort. Cost Basis	0	0
Revolving Loans Convert. to Term	0	0
Loans	11,721	4,325
Home equity
Loans and Leases Receivable Disclosure [Line Items]
Prior	1,747	1,713
Four years before current period	0	0
Three years before current period	41	0
Two years before current period	98	45
One year before current period	551	70
Current period	0	702
Revolving Loans Amort. Cost Basis	48,439	52,135
Revolving Loans Convert. to Term	906	1,146
Loans	51,782	55,811
Home equity | Pass
Loans and Leases Receivable Disclosure [Line Items]
Prior	1,695	1,474
Four years before current period	0	0
Three years before current period	0	0
Two years before current period	98	0
One year before current period	551	70
Current period	0	702
Revolving Loans Amort. Cost Basis	48,182	52,077
Revolving Loans Convert. to Term	906	883
Loans	51,432	55,206
Home equity | Watch
Loans and Leases Receivable Disclosure [Line Items]
Prior	52	193
Four years before current period	0	0
Three years before current period	0	0
Two years before current period	0	0
One year before current period	0	0
Current period	0	0
Revolving Loans Amort. Cost Basis	196	0
Revolving Loans Convert. to Term	0	0
Loans	248	193
Home equity | Substandard
Loans and Leases Receivable Disclosure [Line Items]
Prior	0	46
Four years before current period	0	0
Three years before current period	41	0
Two years before current period	0	45
One year before current period	0	0
Current period	0	0
Revolving Loans Amort. Cost Basis	61	58
Revolving Loans Convert. to Term	0	263
Loans	102	412
Other Consumer
Loans and Leases Receivable Disclosure [Line Items]
Prior	4	370
Four years before current period	0	0
Three years before current period	0	0
Two years before current period	0	0
One year before current period	0	0
Current period	126	0
Revolving Loans Amort. Cost Basis	1,561	1,057
Revolving Loans Convert. to Term	53	0
Loans	1,744	1,427
Other Consumer | Pass
Loans and Leases Receivable Disclosure [Line Items]
Prior	4	370
Four years before current period	0	0
Three years before current period	0	0
Two years before current period	0	0
One year before current period	0	0
Current period	126	0
Revolving Loans Amort. Cost Basis	1,561	1,002
Revolving Loans Convert. to Term	3	0
Loans	1,694	1,372
Other Consumer | Watch
Loans and Leases Receivable Disclosure [Line Items]
Prior	0
Four years before current period	0
Three years before current period	0
Two years before current period	0
One year before current period	0
Current period	0
Revolving Loans Amort. Cost Basis	0
Revolving Loans Convert. to Term	0
Loans	0
Other Consumer | Substandard
Loans and Leases Receivable Disclosure [Line Items]
Prior	0	0
Four years before current period	0	0
Three years before current period	0	0
Two years before current period	0	0
One year before current period	0	0
Current period	0	0
Revolving Loans Amort. Cost Basis	0	55
Revolving Loans Convert. to Term	50	0
Loans	$ 50	$ 55