Loans - Loan Categories and Past Due Loans (Details) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2022	Dec. 31, 2021	Sep. 30, 2021
Financing Receivable, Past Due [Line Items]
Loans receivable held-for-sale, net, not part of disposal group	$ 483	$ 1,154	$ 2,169
Total	2,924,794	2,667,941	2,654,751
Loans 90 or More Days Past Due and Still Accruing Interest	514	823	555
Nonaccrual Loans	8,812	10,764	10,723
Nonaccrual With No Allowance for Credit Loss	8,812
Interest Income on Nonaccrual Loans	12
Commercial
Financing Receivable, Past Due [Line Items]
Total	138,973	172,518	188,191
Loans 90 or More Days Past Due and Still Accruing Interest	0	157	0
Nonaccrual Loans	9	34	91
Nonaccrual With No Allowance for Credit Loss	9
Interest Income on Nonaccrual Loans	0
Commercial Real Estate
Financing Receivable, Past Due [Line Items]
Total	679,217	628,929	615,081
Loans 90 or More Days Past Due and Still Accruing Interest	0	0	0
Nonaccrual Loans	3,401	7,243	7,766
Nonaccrual With No Allowance for Credit Loss	3,401
Interest Income on Nonaccrual Loans	0
Consumer
Financing Receivable, Past Due [Line Items]
Total	1,055,585	920,556	921,189
Loans 90 or More Days Past Due and Still Accruing Interest	0	0	0
Nonaccrual Loans	1,708	1,697	1,101
Nonaccrual With No Allowance for Credit Loss	1,708
Interest Income on Nonaccrual Loans	0
Residential
Financing Receivable, Past Due [Line Items]
Total	1,051,019	945,938	930,290
Loans 90 or More Days Past Due and Still Accruing Interest	514	666	555
Nonaccrual Loans	3,694	1,790	1,765
Nonaccrual With No Allowance for Credit Loss	3,694
Interest Income on Nonaccrual Loans	12
Financial Asset, Past Due
Financing Receivable, Past Due [Line Items]
Total	20,522	17,173	14,484
Financial Asset, Past Due | Commercial
Financing Receivable, Past Due [Line Items]
Total	166	362	867
Financial Asset, Past Due | Commercial Real Estate
Financing Receivable, Past Due [Line Items]
Total	235	1,180	1,641
Financial Asset, Past Due | Consumer
Financing Receivable, Past Due [Line Items]
Total	14,975	10,986	8,362
Financial Asset, Past Due | Residential
Financing Receivable, Past Due [Line Items]
Total	5,146	4,645	3,614
Financing Receivables, 30 to 59 Days Past Due
Financing Receivable, Past Due [Line Items]
Total	9,349	7,022	5,906
Financing Receivables, 30 to 59 Days Past Due | Commercial
Financing Receivable, Past Due [Line Items]
Total	86	202	729
Financing Receivables, 30 to 59 Days Past Due | Commercial Real Estate
Financing Receivable, Past Due [Line Items]
Total	0	0	0
Financing Receivables, 30 to 59 Days Past Due | Consumer
Financing Receivable, Past Due [Line Items]
Total	8,870	6,713	4,809
Financing Receivables, 30 to 59 Days Past Due | Residential
Financing Receivable, Past Due [Line Items]
Total	393	107	368
Financing Receivables, 60 to 89 Days Past Due
Financing Receivable, Past Due [Line Items]
Total	5,743	5,269	3,901
Financing Receivables, 60 to 89 Days Past Due | Commercial
Financing Receivable, Past Due [Line Items]
Total	80	3	63
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	4,397	2,709	2,543
Financing Receivables, 60 to 89 Days Past Due | Residential
Financing Receivable, Past Due [Line Items]
Total	1,266	2,557	1,295
Financing Receivables, Equal to Greater than 90 Days Past Due
Financing Receivable, Past Due [Line Items]
Total	5,430	4,882	4,677
Financing Receivables, Equal to Greater than 90 Days Past Due | Commercial
Financing Receivable, Past Due [Line Items]
Total	0	157	75
Financing Receivables, Equal to Greater than 90 Days Past Due | Commercial Real Estate
Financing Receivable, Past Due [Line Items]
Total	235	1,180	1,641
Financing Receivables, Equal to Greater than 90 Days Past Due | Consumer
Financing Receivable, Past Due [Line Items]
Total	1,708	1,564	1,010
Financing Receivables, Equal to Greater than 90 Days Past Due | Residential
Financing Receivable, Past Due [Line Items]
Total	3,487	1,981	1,951
Financial Asset, Not Past Due
Financing Receivable, Past Due [Line Items]
Total	2,904,272	2,650,768	2,640,267
Financial Asset, Not Past Due | Commercial
Financing Receivable, Past Due [Line Items]
Total	138,807	172,156	187,324
Financial Asset, Not Past Due | Commercial Real Estate
Financing Receivable, Past Due [Line Items]
Total	678,982	627,749	613,440
Financial Asset, Not Past Due | Consumer
Financing Receivable, Past Due [Line Items]
Total	1,040,610	909,570	912,827
Financial Asset, Not Past Due | Residential
Financing Receivable, Past Due [Line Items]
Total	$ 1,045,873	$ 941,293	$ 926,676