Loans - Loan Categories and Past Due Loans (Details) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2023	Dec. 31, 2022	Jun. 30, 2022
Financing Receivable, Past Due [Line Items]
Loans receivable held-for-sale, net, not part of disposal group	$ 312	$ 656	$ 860
Total	3,069,897	2,983,207	2,844,802
Loans 90 or More Days Past Due and Still Accruing Interest	467	1,157	1,641
Nonaccrual Loans	5,997	10,757	7,999
Nonaccrual With No Allowance for Credit Loss	5,997
Interest Income on Nonaccrual Loans	0
Commercial
Financing Receivable, Past Due [Line Items]
Total	147,518	140,293	138,675
Loans 90 or More Days Past Due and Still Accruing Interest	0	44	0
Nonaccrual Loans	89	8	70
Nonaccrual With No Allowance for Credit Loss	89
Interest Income on Nonaccrual Loans	0
Commercial Real Estate
Financing Receivable, Past Due [Line Items]
Total	723,948	707,022	663,234
Loans 90 or More Days Past Due and Still Accruing Interest	0	0	0
Nonaccrual Loans	0	3,110	3,458
Nonaccrual With No Allowance for Credit Loss	0
Interest Income on Nonaccrual Loans	0
Consumer
Financing Receivable, Past Due [Line Items]
Total	1,087,765	1,065,135	1,031,111
Loans 90 or More Days Past Due and Still Accruing Interest	0	0	499
Nonaccrual Loans	1,897	3,503	1,648
Nonaccrual With No Allowance for Credit Loss	1,897
Interest Income on Nonaccrual Loans	0
Residential
Financing Receivable, Past Due [Line Items]
Total	1,110,666	1,070,757	1,011,782
Loans 90 or More Days Past Due and Still Accruing Interest	467	1,113	1,142
Nonaccrual Loans	4,011	4,136	2,823
Nonaccrual With No Allowance for Credit Loss	4,011
Interest Income on Nonaccrual Loans	0
Financial Asset, Past Due
Financing Receivable, Past Due [Line Items]
Total	23,539	28,907	18,105
Financial Asset, Past Due | Commercial
Financing Receivable, Past Due [Line Items]
Total	538	125	435
Financial Asset, Past Due | Commercial Real Estate
Financing Receivable, Past Due [Line Items]
Total	0	370	236
Financial Asset, Past Due | Consumer
Financing Receivable, Past Due [Line Items]
Total	17,353	21,677	13,043
Financial Asset, Past Due | Residential
Financing Receivable, Past Due [Line Items]
Total	5,648	6,735	4,391
Financing Receivables, 30 to 59 Days Past Due
Financing Receivable, Past Due [Line Items]
Total	10,961	15,908	7,793
Financing Receivables, 30 to 59 Days Past Due | Commercial
Financing Receivable, Past Due [Line Items]
Total	192	48	283
Financing Receivables, 30 to 59 Days Past Due | Commercial Real Estate
Financing Receivable, Past Due [Line Items]
Total	0	370	0
Financing Receivables, 30 to 59 Days Past Due | Consumer
Financing Receivable, Past Due [Line Items]
Total	10,275	13,657	7,183
Financing Receivables, 30 to 59 Days Past Due | Residential
Financing Receivable, Past Due [Line Items]
Total	494	1,833	327
Financing Receivables, 60 to 89 Days Past Due
Financing Receivable, Past Due [Line Items]
Total	7,915	4,662	5,190
Financing Receivables, 60 to 89 Days Past Due | Commercial
Financing Receivable, Past Due [Line Items]
Total	287	33	150
Financing Receivables, 60 to 89 Days Past Due | Commercial Real Estate
Financing Receivable, Past Due [Line Items]
Total	0	0	0
Financing Receivables, 60 to 89 Days Past Due | Consumer
Financing Receivable, Past Due [Line Items]
Total	5,302	4,517	3,851
Financing Receivables, 60 to 89 Days Past Due | Residential
Financing Receivable, Past Due [Line Items]
Total	2,326	112	1,189
Financing Receivables, Equal to Greater than 90 Days Past Due
Financing Receivable, Past Due [Line Items]
Total	4,663	8,337	5,122
Financing Receivables, Equal to Greater than 90 Days Past Due | Commercial
Financing Receivable, Past Due [Line Items]
Total	59	44	2
Financing Receivables, Equal to Greater than 90 Days Past Due | Commercial Real Estate
Financing Receivable, Past Due [Line Items]
Total	0	0	236
Financing Receivables, Equal to Greater than 90 Days Past Due | Consumer
Financing Receivable, Past Due [Line Items]
Total	1,776	3,503	2,009
Financing Receivables, Equal to Greater than 90 Days Past Due | Residential
Financing Receivable, Past Due [Line Items]
Total	2,828	4,790	2,875
Financial Asset, Not Past Due
Financing Receivable, Past Due [Line Items]
Total	3,046,358	2,954,300	2,826,697
Financial Asset, Not Past Due | Commercial
Financing Receivable, Past Due [Line Items]
Total	146,980	140,168	138,240
Financial Asset, Not Past Due | Commercial Real Estate
Financing Receivable, Past Due [Line Items]
Total	723,948	706,652	662,998
Financial Asset, Not Past Due | Consumer
Financing Receivable, Past Due [Line Items]
Total	1,070,412	1,043,458	1,018,068
Financial Asset, Not Past Due | Residential
Financing Receivable, Past Due [Line Items]
Total	$ 1,105,018	$ 1,064,022	$ 1,007,391