Loans and Allowance for Credit Losses on Loans HFI - Credit Quality of Loan Portfolio by Year of Origination (Details) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2023	Dec. 31, 2022
Financing Receivable, Allowance for Credit Loss [Line Items]
Total	$ 9,326,024	$ 9,298,212
Commercial and industrial
Financing Receivable, Allowance for Credit Loss [Line Items]
2023-2022	122,420	396,833
2022-2021	354,187	204,830
2021-2020	175,916	69,147
2020-2019	51,598	92,705
2019-2018	79,584	40,196
Prior	90,118	70,500
Revolving Loans Amortized Cost Basis	819,749	771,572
Total	1,693,572	1,645,783
Current-period gross charge-offs, 2023	0
Current-period gross charge-offs, 2022	0
Current-period gross charge-offs, 2021	46
Current-period gross charge-offs, 2020	0
Current-period gross charge-offs, 2019	0
Current-period gross charge-offs, prior	0
Revolving Loans Amortized Cost Basis	11
Total	57
Commercial and industrial | Pass
Financing Receivable, Allowance for Credit Loss [Line Items]
2023-2022	121,939	396,643
2022-2021	348,068	204,000
2021-2020	174,977	67,231
2020-2019	47,672	90,894
2019-2018	78,078	39,780
Prior	82,735	62,816
Revolving Loans Amortized Cost Basis	787,526	762,717
Total	1,640,995	1,624,081
Commercial and industrial | Special Mention
Financing Receivable, Allowance for Credit Loss [Line Items]
2023-2022	0	125
2022-2021	3,453	7
2021-2020	329	0
2020-2019	2,016	160
2019-2018	157	143
Prior	1,427	771
Revolving Loans Amortized Cost Basis	20,241	2,520
Total	27,623	3,726
Commercial and industrial | Classified
Financing Receivable, Allowance for Credit Loss [Line Items]
2023-2022	481	65
2022-2021	2,666	823
2021-2020	610	1,916
2020-2019	1,910	1,651
2019-2018	1,349	273
Prior	5,956	6,913
Revolving Loans Amortized Cost Basis	11,982	6,335
Total	24,954	17,976
Construction
Financing Receivable, Allowance for Credit Loss [Line Items]
2023-2022	83,247	682,965
2022-2021	775,397	496,032
2021-2020	374,858	142,248
2020-2019	67,486	84,599
2019-2018	70,096	17,360
Prior	52,655	45,378
Revolving Loans Amortized Cost Basis	213,231	188,906
Total	1,636,970	1,657,488
Current-period gross charge-offs, 2023	0
Current-period gross charge-offs, 2022	0
Current-period gross charge-offs, 2021	0
Current-period gross charge-offs, 2020	0
Current-period gross charge-offs, 2019	0
Current-period gross charge-offs, prior	0
Revolving Loans Amortized Cost Basis	0
Total	0
Construction | Pass
Financing Receivable, Allowance for Credit Loss [Line Items]
2023-2022	83,247	682,885
2022-2021	772,013	495,723
2021-2020	374,540	142,233
2020-2019	66,581	84,599
2019-2018	70,096	17,360
Prior	51,937	44,326
Revolving Loans Amortized Cost Basis	213,231	188,906
Total	1,631,645	1,656,032
Construction | Special Mention
Financing Receivable, Allowance for Credit Loss [Line Items]
2023-2022	0	0
2022-2021	169	0
2021-2020	0	15
2020-2019	6	0
2019-2018	0	0
Prior	718	707
Revolving Loans Amortized Cost Basis	0	0
Total	893	722
Construction | Classified
Financing Receivable, Allowance for Credit Loss [Line Items]
2023-2022	0	80
2022-2021	3,215	309
2021-2020	318	0
2020-2019	899	0
2019-2018	0	0
Prior	0	345
Revolving Loans Amortized Cost Basis	0	0
Total	4,432	734
Residential real estate: | Multi-family mortgage
Financing Receivable, Allowance for Credit Loss [Line Items]
2023-2022	19,097	142,912
2022-2021	139,768	147,168
2021-2020	150,468	96,819
2020-2019	119,065	33,547
2019-2018	33,190	6,971
Prior	42,973	38,551
Revolving Loans Amortized Cost Basis	13,464	13,604
Total	518,025	479,572
Current-period gross charge-offs, 2023	0
Current-period gross charge-offs, 2022	0
Current-period gross charge-offs, 2021	0
Current-period gross charge-offs, 2020	0
Current-period gross charge-offs, 2019	0
Current-period gross charge-offs, prior	0
Revolving Loans Amortized Cost Basis	0
Total	0
Residential real estate: | Multi-family mortgage | Pass
Financing Receivable, Allowance for Credit Loss [Line Items]
2023-2022	19,097	142,912
2022-2021	139,768	147,168
2021-2020	150,468	96,819
2020-2019	119,065	33,547
2019-2018	33,190	6,971
Prior	41,852	37,385
Revolving Loans Amortized Cost Basis	13,464	13,604
Total	516,904	478,406
Residential real estate: | Multi-family mortgage | Special Mention
Financing Receivable, Allowance for Credit Loss [Line Items]
2023-2022	0	0
2022-2021	0	0
2021-2020	0	0
2020-2019	0	0
2019-2018	0	0
Prior	0	0
Revolving Loans Amortized Cost Basis	0	0
Total	0	0
Residential real estate: | Multi-family mortgage | Classified
Financing Receivable, Allowance for Credit Loss [Line Items]
2023-2022	0	0
2022-2021	0	0
2021-2020	0	0
2020-2019	0	0
2019-2018	0	0
Prior	1,121	1,166
Revolving Loans Amortized Cost Basis	0	0
Total	1,121	1,166
Residential real estate: | 1-to-4 family mortgage
Financing Receivable, Allowance for Credit Loss [Line Items]
2023-2022	100,265	569,437
2022-2021	534,653	453,564
2021-2020	414,587	166,187
2020-2019	156,939	95,326
2019-2018	86,543	70,157
Prior	255,627	218,450
Revolving Loans Amortized Cost Basis	0	0
Total	1,548,614	1,573,121
Current-period gross charge-offs, 2023	0
Current-period gross charge-offs, 2022	16
Current-period gross charge-offs, 2021	0
Current-period gross charge-offs, 2020	0
Current-period gross charge-offs, 2019	0
Current-period gross charge-offs, prior	16
Revolving Loans Amortized Cost Basis	0
Total	32
Residential real estate: | 1-to-4 family mortgage | Performing
Financing Receivable, Allowance for Credit Loss [Line Items]
2023-2022	100,265	568,210
2022-2021	531,715	448,401
2021-2020	411,194	160,715
2020-2019	152,684	93,548
2019-2018	86,026	68,113
Prior	248,803	211,019
Revolving Loans Amortized Cost Basis	0	0
Total	1,530,687	1,550,006
Residential real estate: | 1-to-4 family mortgage | Nonperforming
Financing Receivable, Allowance for Credit Loss [Line Items]
2023-2022	0	1,227
2022-2021	2,938	5,163
2021-2020	3,393	5,472
2020-2019	4,255	1,778
2019-2018	517	2,044
Prior	6,824	7,431
Revolving Loans Amortized Cost Basis	0	0
Total	17,927	23,115
Residential real estate: | Residential line of credit
Financing Receivable, Allowance for Credit Loss [Line Items]
2023-2022	0	0
2022-2021	0	0
2021-2020	0	0
2020-2019	0	0
2019-2018	0	0
Prior	0	0
Revolving Loans Amortized Cost Basis	507,652	496,660
Total	507,652	496,660
Current-period gross charge-offs, 2023	0
Current-period gross charge-offs, 2022	0
Current-period gross charge-offs, 2021	0
Current-period gross charge-offs, 2020	0
Current-period gross charge-offs, 2019	0
Current-period gross charge-offs, prior	0
Revolving Loans Amortized Cost Basis	0
Total	0
Residential real estate: | Residential line of credit | Performing
Financing Receivable, Allowance for Credit Loss [Line Items]
2023-2022	0	0
2022-2021	0	0
2021-2020	0	0
2020-2019	0	0
2019-2018	0	0
Prior	0	0
Revolving Loans Amortized Cost Basis	506,465	495,129
Total	506,465	495,129
Residential real estate: | Residential line of credit | Nonperforming
Financing Receivable, Allowance for Credit Loss [Line Items]
2023-2022	0	0
2022-2021	0	0
2021-2020	0	0
2020-2019	0	0
2019-2018	0	0
Prior	0	0
Revolving Loans Amortized Cost Basis	1,187	1,531
Total	1,187	1,531
Commercial real estate: | Owner-occupied
Financing Receivable, Allowance for Credit Loss [Line Items]
2023-2022	41,038	237,963
2022-2021	240,975	225,859
2021-2020	230,037	110,972
2020-2019	119,039	153,162
2019-2018	168,074	69,602
Prior	305,012	254,690
Revolving Loans Amortized Cost Basis	54,607	62,332
Total	1,158,782	1,114,580
Current-period gross charge-offs, 2023	0
Current-period gross charge-offs, 2022	0
Current-period gross charge-offs, 2021	144
Current-period gross charge-offs, 2020	0
Current-period gross charge-offs, 2019	0
Current-period gross charge-offs, prior	0
Revolving Loans Amortized Cost Basis	0
Total	144
Commercial real estate: | Owner-occupied | Pass
Financing Receivable, Allowance for Credit Loss [Line Items]
2023-2022	41,038	237,862
2022-2021	233,473	223,883
2021-2020	227,506	110,748
2020-2019	119,039	148,405
2019-2018	164,411	66,101
Prior	295,161	246,414
Revolving Loans Amortized Cost Basis	50,408	57,220
Total	1,131,036	1,090,633
Commercial real estate: | Owner-occupied | Special Mention
Financing Receivable, Allowance for Credit Loss [Line Items]
2023-2022	0	101
2022-2021	1,324	683
2021-2020	1,859	0
2020-2019	0	168
2019-2018	162	2,225
Prior	5,332	1,258
Revolving Loans Amortized Cost Basis	0	5,000
Total	8,677	9,435
Commercial real estate: | Owner-occupied | Classified
Financing Receivable, Allowance for Credit Loss [Line Items]
2023-2022	0	0
2022-2021	6,178	1,293
2021-2020	672	224
2020-2019	0	4,589
2019-2018	3,501	1,276
Prior	4,519	7,018
Revolving Loans Amortized Cost Basis	4,199	112
Total	19,069	14,512
Commercial real estate: | Non-owner occupied
Financing Receivable, Allowance for Credit Loss [Line Items]
2023-2022	14,423	467,360
2022-2021	444,487	442,577
2021-2020	449,798	131,497
2020-2019	121,359	159,351
2019-2018	154,074	214,104
Prior	655,154	488,213
Revolving Loans Amortized Cost Basis	42,683	60,908
Total	1,881,978	1,964,010
Current-period gross charge-offs, 2023	0
Current-period gross charge-offs, 2022	0
Current-period gross charge-offs, 2021	0
Current-period gross charge-offs, 2020	0
Current-period gross charge-offs, 2019	0
Current-period gross charge-offs, prior	0
Revolving Loans Amortized Cost Basis	0
Total	0
Commercial real estate: | Non-owner occupied | Pass
Financing Receivable, Allowance for Credit Loss [Line Items]
2023-2022	14,235	467,360
2022-2021	444,487	440,319
2021-2020	447,841	131,497
2020-2019	121,359	159,205
2019-2018	153,675	210,752
Prior	642,442	473,607
Revolving Loans Amortized Cost Basis	42,683	60,908
Total	1,866,722	1,943,648
Commercial real estate: | Non-owner occupied | Special Mention
Financing Receivable, Allowance for Credit Loss [Line Items]
2023-2022	0	0
2022-2021	0	0
2021-2020	0	0
2020-2019	0	0
2019-2018	399	82
Prior	2,474	2,459
Revolving Loans Amortized Cost Basis	0	0
Total	2,873	2,541
Commercial real estate: | Non-owner occupied | Classified
Financing Receivable, Allowance for Credit Loss [Line Items]
2023-2022	188	0
2022-2021	0	2,258
2021-2020	1,957	0
2020-2019	0	146
2019-2018	0	3,270
Prior	10,238	12,147
Revolving Loans Amortized Cost Basis	0	0
Total	12,383	17,821
Consumer and other
Financing Receivable, Allowance for Credit Loss [Line Items]
2023-2022	45,554	118,803
2022-2021	102,801	58,175
2021-2020	52,303	42,468
2020-2019	38,885	30,045
2019-2018	27,770	28,489
Prior	105,875	84,843
Revolving Loans Amortized Cost Basis	7,243	4,175
Total	380,431	366,998
Current-period gross charge-offs, 2023	632
Current-period gross charge-offs, 2022	386
Current-period gross charge-offs, 2021	72
Current-period gross charge-offs, 2020	106
Current-period gross charge-offs, 2019	21
Current-period gross charge-offs, prior	207
Revolving Loans Amortized Cost Basis	2
Total	1,426
Consumer and other | Performing
Financing Receivable, Allowance for Credit Loss [Line Items]
2023-2022	45,554	118,637
2022-2021	102,231	56,779
2021-2020	50,673	41,008
2020-2019	36,969	29,139
2019-2018	26,698	26,982
Prior	102,362	82,318
Revolving Loans Amortized Cost Basis	7,243	4,175
Total	371,730	359,038
Consumer and other | Nonperforming
Financing Receivable, Allowance for Credit Loss [Line Items]
2023-2022	0	166
2022-2021	570	1,396
2021-2020	1,630	1,460
2020-2019	1,916	906
2019-2018	1,072	1,507
Prior	3,513	2,525
Revolving Loans Amortized Cost Basis	0	0
Total	8,701	7,960
Total consumer type loans
Financing Receivable, Allowance for Credit Loss [Line Items]
2023-2022	145,819	688,240
2022-2021	637,454	511,739
2021-2020	466,890	208,655
2020-2019	195,824	125,371
2019-2018	114,313	98,646
Prior	361,502	303,293
Revolving Loans Amortized Cost Basis	514,895	500,835
Total	2,436,697	2,436,779
Current-period gross charge-offs, 2023	632
Current-period gross charge-offs, 2022	402
Current-period gross charge-offs, 2021	72
Current-period gross charge-offs, 2020	106
Current-period gross charge-offs, 2019	21
Current-period gross charge-offs, prior	223
Revolving Loans Amortized Cost Basis	2
Total	1,458
Total consumer type loans | Performing
Financing Receivable, Allowance for Credit Loss [Line Items]
2023-2022	145,819	686,847
2022-2021	633,946	505,180
2021-2020	461,867	201,723
2020-2019	189,653	122,687
2019-2018	112,724	95,095
Prior	351,165	293,337
Revolving Loans Amortized Cost Basis	513,708	499,304
Total	2,408,882	2,404,173
Total consumer type loans | Nonperforming
Financing Receivable, Allowance for Credit Loss [Line Items]
2023-2022	0	1,393
2022-2021	3,508	6,559
2021-2020	5,023	6,932
2020-2019	6,171	2,684
2019-2018	1,589	3,551
Prior	10,337	9,956
Revolving Loans Amortized Cost Basis	1,187	1,531
Total	27,815	32,606
Total Commercial Loans
Financing Receivable, Allowance for Credit Loss [Line Items]
2023-2022	280,225	1,928,033
2022-2021	1,954,814	1,516,466
2021-2020	1,381,077	550,683
2020-2019	478,547	523,364
2019-2018	505,018	348,233
Prior	1,145,912	897,332
Revolving Loans Amortized Cost Basis	1,143,734	1,097,322
Total	6,889,327	6,861,433
Current-period gross charge-offs, 2023	0
Current-period gross charge-offs, 2022	0
Current-period gross charge-offs, 2021	190
Current-period gross charge-offs, 2020	0
Current-period gross charge-offs, 2019	0
Current-period gross charge-offs, prior	0
Revolving Loans Amortized Cost Basis	11
Total	201
Total Commercial Loans | Pass
Financing Receivable, Allowance for Credit Loss [Line Items]
2023-2022	279,556	1,927,662
2022-2021	1,937,809	1,511,093
2021-2020	1,375,332	548,528
2020-2019	473,716	516,650
2019-2018	499,450	340,964
Prior	1,114,127	864,548
Revolving Loans Amortized Cost Basis	1,107,312	1,083,355
Total	6,787,302	6,792,800
Total Commercial Loans | Special Mention
Financing Receivable, Allowance for Credit Loss [Line Items]
2023-2022	0	226
2022-2021	4,946	690
2021-2020	2,188	15
2020-2019	2,022	328
2019-2018	718	2,450
Prior	9,951	5,195
Revolving Loans Amortized Cost Basis	20,241	7,520
Total	40,066	16,424
Total Commercial Loans | Classified
Financing Receivable, Allowance for Credit Loss [Line Items]
2023-2022	669	145
2022-2021	12,059	4,683
2021-2020	3,557	2,140
2020-2019	2,809	6,386
2019-2018	4,850	4,819
Prior	21,834	27,589
Revolving Loans Amortized Cost Basis	16,181	6,447
Total	$ 61,959	$ 52,209