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Loans and Allowance for Credit Losses - Risk category of loans by class of loans (Details) - USD ($) $ in Thousands	Mar. 31, 2022	Dec. 31, 2021
Loans and Leases Receivable Disclosure [Line Items]
Prior	$ 2,190,041	$ 1,457,032
Originated, Four years before current fiscal year	992,905	806,647
Originated, Three years before current fiscal year	860,566	1,009,864
Originated, Two years before current fiscal year	729,147	933,401
Originated, Fiscal year before current fiscal year	1,130,292	749,261
Originated, Current fiscal year	162,697	1,071,249
Revolving Loans Amort. Cost Basis	1,045,977	1,026,653
Revolving Loans Convert. to Term	2,182	11,491
Loans	7,113,807	7,065,598
Commercial
Loans and Leases Receivable Disclosure [Line Items]
Prior	242,961	190,978
Originated, Four years before current fiscal year	100,787	75,553
Originated, Three years before current fiscal year	87,675	106,291
Originated, Two years before current fiscal year	80,990	92,307
Originated, Fiscal year before current fiscal year	245,987	91,783
Originated, Current fiscal year	14,286	214,700
Revolving Loans Amort. Cost Basis	604,713	576,055
Revolving Loans Convert. to Term	216	6,650
Loans	1,377,615	1,354,317
Commercial | Pass
Loans and Leases Receivable Disclosure [Line Items]
Prior	219,550	180,877
Originated, Four years before current fiscal year	98,054	58,693
Originated, Three years before current fiscal year	86,957	103,058
Originated, Two years before current fiscal year	76,823	90,874
Originated, Fiscal year before current fiscal year	243,084	87,515
Originated, Current fiscal year	14,286	211,563
Revolving Loans Amort. Cost Basis	573,964	549,055
Revolving Loans Convert. to Term	216	6,023
Loans	1,312,934	1,287,658
Commercial | Watch
Loans and Leases Receivable Disclosure [Line Items]
Prior	12,922	5,896
Originated, Four years before current fiscal year	1,964	6,567
Originated, Three years before current fiscal year	297	1,020
Originated, Two years before current fiscal year	4,167	996
Originated, Fiscal year before current fiscal year	2,903	4,268
Originated, Current fiscal year		3,137
Revolving Loans Amort. Cost Basis	22,753	18,336
Revolving Loans Convert. to Term		627
Loans	45,006	40,847
Commercial | Special Mention
Loans and Leases Receivable Disclosure [Line Items]
Prior	9,074
Originated, Four years before current fiscal year	351	9,515
Originated, Three years before current fiscal year		363
Revolving Loans Amort. Cost Basis	662	901
Loans	10,087	10,779
Commercial | Substandard
Loans and Leases Receivable Disclosure [Line Items]
Prior	1,415	4,205
Originated, Four years before current fiscal year	418	778
Originated, Three years before current fiscal year	421	1,850
Originated, Two years before current fiscal year		437
Revolving Loans Amort. Cost Basis	7,334	7,763
Loans	9,588	15,033
PPP loans
Loans and Leases Receivable Disclosure [Line Items]
Prior	0
Originated, Four years before current fiscal year	0
Originated, Three years before current fiscal year	0
Originated, Two years before current fiscal year	6,693
Originated, Fiscal year before current fiscal year	29,051	18,205
Originated, Current fiscal year	0	32,900
Revolving Loans Amort. Cost Basis	0
Revolving Loans Convert. to Term	0
Loans	35,744	51,105
PPP loans | Pass
Loans and Leases Receivable Disclosure [Line Items]
Originated, Two years before current fiscal year	6,587
Originated, Fiscal year before current fiscal year	29,051	16,840
Originated, Current fiscal year		32,900
Loans	35,638	49,740
PPP loans | Substandard
Loans and Leases Receivable Disclosure [Line Items]
Originated, Two years before current fiscal year	106
Originated, Fiscal year before current fiscal year		1,365
Loans	106	1,365
Income-producing - commercial real estate
Loans and Leases Receivable Disclosure [Line Items]
Prior	1,279,744	792,523
Originated, Four years before current fiscal year	515,214	407,154
Originated, Three years before current fiscal year	539,926	468,916
Originated, Two years before current fiscal year	352,652	549,175
Originated, Fiscal year before current fiscal year	550,262	372,272
Originated, Current fiscal year	67,095	549,356
Revolving Loans Amort. Cost Basis	238,533	245,902
Revolving Loans Convert. to Term	369
Loans	3,543,795	3,385,298
Income-producing - commercial real estate | Pass
Loans and Leases Receivable Disclosure [Line Items]
Prior	988,558	572,550
Originated, Four years before current fiscal year	465,207	333,394
Originated, Three years before current fiscal year	530,134	418,489
Originated, Two years before current fiscal year	317,332	495,808
Originated, Fiscal year before current fiscal year	550,262	337,178
Originated, Current fiscal year	67,095	549,356
Revolving Loans Amort. Cost Basis	190,847	198,210
Revolving Loans Convert. to Term	369
Loans	3,109,804	2,904,985
Income-producing - commercial real estate | Watch
Loans and Leases Receivable Disclosure [Line Items]
Prior	123,945	58,334
Originated, Four years before current fiscal year		73,760
Originated, Two years before current fiscal year	35,320	43,561
Originated, Fiscal year before current fiscal year		35,094
Originated, Current fiscal year		0
Loans	159,265	210,749
Income-producing - commercial real estate | Special Mention
Loans and Leases Receivable Disclosure [Line Items]
Prior	101,260	101,580
Originated, Four years before current fiscal year	46,887
Originated, Three years before current fiscal year	4,250	41,936
Originated, Two years before current fiscal year		4,264
Revolving Loans Amort. Cost Basis	47,686	47,692
Loans	200,083	195,472
Income-producing - commercial real estate | Substandard
Loans and Leases Receivable Disclosure [Line Items]
Prior	65,981	60,059
Originated, Four years before current fiscal year	3,120
Originated, Three years before current fiscal year	5,542	8,491
Originated, Two years before current fiscal year		5,542
Loans	74,643	74,092
Owner-occupied - commercial real estate
Loans and Leases Receivable Disclosure [Line Items]
Prior	522,501	398,139
Originated, Four years before current fiscal year	240,413	132,268
Originated, Three years before current fiscal year	88,136	222,131
Originated, Two years before current fiscal year	42,715	90,752
Originated, Fiscal year before current fiscal year	188,852	41,135
Originated, Current fiscal year	6,453	184,529
Revolving Loans Amort. Cost Basis	15,912	16,900
Revolving Loans Convert. to Term		1,922
Loans	1,104,982	1,087,776
Owner-occupied - commercial real estate | Pass
Loans and Leases Receivable Disclosure [Line Items]
Prior	479,223	353,471
Originated, Four years before current fiscal year	228,705	127,687
Originated, Three years before current fiscal year	81,347	210,348
Originated, Two years before current fiscal year	42,715	81,604
Originated, Fiscal year before current fiscal year	188,852	41,135
Originated, Current fiscal year	6,453	184,529
Revolving Loans Amort. Cost Basis	2,341	16,838
Revolving Loans Convert. to Term		1,922
Loans	1,029,636	1,017,534
Owner-occupied - commercial real estate | Watch
Loans and Leases Receivable Disclosure [Line Items]
Prior	23,557	22,710
Originated, Four years before current fiscal year	11,708	4,581
Originated, Three years before current fiscal year	6,789	11,783
Originated, Two years before current fiscal year		7,026
Revolving Loans Amort. Cost Basis	13,571	62
Loans	55,625	46,162
Owner-occupied - commercial real estate | Special Mention
Loans and Leases Receivable Disclosure [Line Items]
Prior		0
Originated, Two years before current fiscal year		2,122
Loans		2,122
Owner-occupied - commercial real estate | Substandard
Loans and Leases Receivable Disclosure [Line Items]
Prior	19,721	21,958
Loans	19,721	21,958
Real estate mortgage - residential
Loans and Leases Receivable Disclosure [Line Items]
Prior	25,277	19,598
Originated, Four years before current fiscal year	12,856	5,854
Originated, Three years before current fiscal year	13,038	12,956
Originated, Two years before current fiscal year	3,421	15,627
Originated, Fiscal year before current fiscal year	16,438	3,436
Originated, Current fiscal year	1,208	16,495
Loans	72,238	73,966
Real estate mortgage - residential | Pass
Loans and Leases Receivable Disclosure [Line Items]
Prior	20,520	14,645
Originated, Four years before current fiscal year	12,856	5,854
Originated, Three years before current fiscal year	13,038	12,956
Originated, Two years before current fiscal year	3,421	15,546
Originated, Fiscal year before current fiscal year	16,438	3,436
Originated, Current fiscal year	1,208	16,495
Loans	67,481	68,932
Real estate mortgage - residential | Watch
Loans and Leases Receivable Disclosure [Line Items]
Prior	3,059	3,255
Loans	3,059	3,255
Real estate mortgage - residential | Substandard
Loans and Leases Receivable Disclosure [Line Items]
Prior	1,698	1,698
Originated, Two years before current fiscal year		81
Loans	1,698	1,779
Construction - commercial and residential
Loans and Leases Receivable Disclosure [Line Items]
Prior	101,495	33,321
Originated, Four years before current fiscal year	112,990	183,674
Originated, Three years before current fiscal year	86,863	171,152
Originated, Two years before current fiscal year	180,491	145,692
Originated, Fiscal year before current fiscal year	98,376	160,952
Originated, Current fiscal year	73,655	71,799
Revolving Loans Amort. Cost Basis	129,231	127,956
Revolving Loans Convert. to Term		1,773
Loans	783,101	896,319
Construction - commercial and residential | Pass
Loans and Leases Receivable Disclosure [Line Items]
Prior	57,078	32,815
Originated, Four years before current fiscal year	112,990	139,756
Originated, Three years before current fiscal year	86,863	171,152
Originated, Two years before current fiscal year	180,491	142,599
Originated, Fiscal year before current fiscal year	98,376	160,952
Originated, Current fiscal year	73,655	71,799
Revolving Loans Amort. Cost Basis	129,231	127,956
Revolving Loans Convert. to Term		1,773
Loans	738,684	848,802
Construction - commercial and residential | Watch
Loans and Leases Receivable Disclosure [Line Items]
Prior	44,417	506
Originated, Four years before current fiscal year		43,918
Loans	44,417	44,424
Construction - commercial and residential | Substandard
Loans and Leases Receivable Disclosure [Line Items]
Originated, Two years before current fiscal year		3,093
Loans		3,093
Construction - C&I (owner occupied)
Loans and Leases Receivable Disclosure [Line Items]
Prior	15,278	20,390
Originated, Four years before current fiscal year	10,645	2,144
Originated, Three years before current fiscal year	44,884	28,418
Originated, Two years before current fiscal year	62,084	39,803
Originated, Fiscal year before current fiscal year	779	61,408
Originated, Current fiscal year	0	768
Revolving Loans Amort. Cost Basis	6,612	6,648
Loans	140,282	159,579
Construction - C&I (owner occupied) | Pass
Loans and Leases Receivable Disclosure [Line Items]
Prior	14,219	19,710
Originated, Four years before current fiscal year	7,391	1,754
Originated, Three years before current fiscal year	44,884	25,163
Originated, Two years before current fiscal year	62,084	39,803
Originated, Fiscal year before current fiscal year	779	61,408
Originated, Current fiscal year		768
Revolving Loans Amort. Cost Basis	6,612	6,648
Loans	135,969	155,254
Construction - C&I (owner occupied) | Watch
Loans and Leases Receivable Disclosure [Line Items]
Prior	1,059	680
Originated, Four years before current fiscal year	3,254	390
Originated, Three years before current fiscal year		3,255
Loans	4,313	4,325
Home equity
Loans and Leases Receivable Disclosure [Line Items]
Prior	2,447	1,713
Originated, Four years before current fiscal year	0	0
Originated, Three years before current fiscal year	44	0
Originated, Two years before current fiscal year	101	45
Originated, Fiscal year before current fiscal year	547	70
Originated, Current fiscal year	0	702
Revolving Loans Amort. Cost Basis	50,068	52,135
Revolving Loans Convert. to Term	1,597	1,146
Loans	54,804	55,811
Home equity | Pass
Loans and Leases Receivable Disclosure [Line Items]
Prior	2,081	1,474
Originated, Two years before current fiscal year	101
Originated, Fiscal year before current fiscal year	547	70
Originated, Current fiscal year		702
Revolving Loans Amort. Cost Basis	50,011	52,077
Revolving Loans Convert. to Term	1,597	883
Loans	54,337	55,206
Home equity | Watch
Loans and Leases Receivable Disclosure [Line Items]
Prior	58	193
Loans	58	193
Home equity | Substandard
Loans and Leases Receivable Disclosure [Line Items]
Prior	308	46
Originated, Three years before current fiscal year	44
Originated, Two years before current fiscal year		45
Revolving Loans Amort. Cost Basis	57	58
Revolving Loans Convert. to Term		263
Loans	409	412
Other consumer
Loans and Leases Receivable Disclosure [Line Items]
Prior	338	370
Originated, Four years before current fiscal year	0	0
Originated, Three years before current fiscal year	0	0
Originated, Two years before current fiscal year	0
Originated, Fiscal year before current fiscal year	0	0
Originated, Current fiscal year	0	0
Revolving Loans Amort. Cost Basis	908	1,057
Loans	1,246	1,427
Other consumer | Pass
Loans and Leases Receivable Disclosure [Line Items]
Prior	338	370
Revolving Loans Amort. Cost Basis	853	1,002
Loans	1,191	1,372
Other consumer | Watch
Loans and Leases Receivable Disclosure [Line Items]
Revolving Loans Amort. Cost Basis	50
Loans	50
Other consumer | Substandard
Loans and Leases Receivable Disclosure [Line Items]
Revolving Loans Amort. Cost Basis	5	55
Loans	$ 5	$ 55

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Amount of financing receivable originated more than five years prior to current fiscal year.

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