Allowance for Credit Losses - Allowance for Loan Losses (Details) - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Financing Receivable, Allowance for Credit Loss [Line Items]
Individually evaluated	$ 20,789	$ 16,268
Collectively evaluated	8,253,253	7,766,319
Acquired with deteriorated credit quality	69,819	83,463
Loans	8,343,861	7,866,050
Individually evaluated	2,281	4,091
Collectively evaluated	74,882	66,173
Total	77,163	70,264	$ 58,047
Non-owner occupied commercial
Financing Receivable, Allowance for Credit Loss [Line Items]
Individually evaluated	0	0
Collectively evaluated	2,959,469	2,871,950
Acquired with deteriorated credit quality	28,490	34,064
Loans	2,987,959	2,906,014
Individually evaluated	557	753
Collectively evaluated	23,762	22,709
Total	24,319	23,462	20,071
Owner occupied commercial
Financing Receivable, Allowance for Credit Loss [Line Items]
Individually evaluated	6,474	12,041
Collectively evaluated	1,246,243	1,202,919
Acquired with deteriorated credit quality	30,504	31,229
Loans	1,283,221	1,246,189
Individually evaluated	893	983
Collectively evaluated	5,494	5,713
Total	6,387	6,696	3,964
Multifamily
Financing Receivable, Allowance for Credit Loss [Line Items]
Individually evaluated	1,095	0
Collectively evaluated	1,402,174	1,254,412
Acquired with deteriorated credit quality	5,636	6,402
Loans	1,408,905	1,260,814
Individually evaluated	6	5
Collectively evaluated	9,740	9,420
Total	9,746	9,425	8,309
Non-owner occupied residential
Financing Receivable, Allowance for Credit Loss [Line Items]
Individually evaluated	522	441
Collectively evaluated	212,460	216,516
Acquired with deteriorated credit quality	1,004	1,069
Loans	213,986	218,026
Individually evaluated	14	16
Collectively evaluated	2,386	2,627
Total	2,400	2,643	2,380
Commercial, industrial and other
Financing Receivable, Allowance for Credit Loss [Line Items]
Individually evaluated	0	2,806
Collectively evaluated	635,285	594,568
Acquired with deteriorated credit quality	3,609	9,337
Loans	638,894	606,711
Individually evaluated	686	2,150
Collectively evaluated	8,358	6,686
Total	9,044	8,836	9,891
Construction
Financing Receivable, Allowance for Credit Loss [Line Items]
Individually evaluated	12,698	980
Collectively evaluated	290,047	379,120
Acquired with deteriorated credit quality	0	0
Loans	302,745	380,100
Individually evaluated	0	0
Collectively evaluated	2,246	2,968
Total	2,246	2,968	838
Equipment finance
Financing Receivable, Allowance for Credit Loss [Line Items]
Individually evaluated	0	0
Collectively evaluated	179,171	151,574
Acquired with deteriorated credit quality	0	0
Loans	179,171	151,574
Individually evaluated	0	0
Collectively evaluated	7,521	3,445
Total	7,521	3,445	3,663
Residential mortgage
Financing Receivable, Allowance for Credit Loss [Line Items]
Individually evaluated	0	0
Collectively evaluated	985,398	764,340
Acquired with deteriorated credit quality	370	1,212
Loans	985,768	765,552
Individually evaluated	56	181
Collectively evaluated	10,330	7,860
Total	10,386	8,041	3,914
Consumer
Financing Receivable, Allowance for Credit Loss [Line Items]
Individually evaluated	0	0
Collectively evaluated	343,006	330,920
Acquired with deteriorated credit quality	206	150
Loans	343,212	331,070
Individually evaluated	69	3
Collectively evaluated	5,045	4,745
Total	$ 5,114	$ 4,748	$ 5,017