Loans Receivable, Net - Aging of Recorded Investment in Past Due Loans Excluding PCI Loans (Details) - USD ($) $ in Thousands	Sep. 30, 2022	Dec. 31, 2021
Financing Receivable, Past Due [Line Items]
Total loans receivable	$ 9,718,760	$ 8,622,870
Total Past Due
Financing Receivable, Past Due [Line Items]
Total loans receivable	17,893	22,728
30-59 Days Past Due
Financing Receivable, Past Due [Line Items]
Total loans receivable	2,577	12,385
60-89 Days Past Due
Financing Receivable, Past Due [Line Items]
Total loans receivable	9,269	2,161
90 Days or Greater Past Due
Financing Receivable, Past Due [Line Items]
Total loans receivable	6,047	8,182
Loans Not Past Due
Financing Receivable, Past Due [Line Items]
Total loans receivable	9,700,867	8,600,142
Commercial real estate – investor
Financing Receivable, Past Due [Line Items]
Total loans receivable	5,007,637	4,378,061
Commercial real estate – investor | Total Past Due
Financing Receivable, Past Due [Line Items]
Total loans receivable	2,993	3,528
Commercial real estate – investor | 30-59 Days Past Due
Financing Receivable, Past Due [Line Items]
Total loans receivable	0	1,717
Commercial real estate – investor | 60-89 Days Past Due
Financing Receivable, Past Due [Line Items]
Total loans receivable	968	102
Commercial real estate – investor | 90 Days or Greater Past Due
Financing Receivable, Past Due [Line Items]
Total loans receivable	2,025	1,709
Commercial real estate – investor | Loans Not Past Due
Financing Receivable, Past Due [Line Items]
Total loans receivable	5,004,644	4,374,533
Commercial real estate – owner occupied
Financing Receivable, Past Due [Line Items]
Total loans receivable	983,784	1,055,065
Commercial real estate – owner occupied | Total Past Due
Financing Receivable, Past Due [Line Items]
Total loans receivable	6,126	1,174
Commercial real estate – owner occupied | 30-59 Days Past Due
Financing Receivable, Past Due [Line Items]
Total loans receivable	428	599
Commercial real estate – owner occupied | 60-89 Days Past Due
Financing Receivable, Past Due [Line Items]
Total loans receivable	5,613	0
Commercial real estate – owner occupied | 90 Days or Greater Past Due
Financing Receivable, Past Due [Line Items]
Total loans receivable	85	575
Commercial real estate – owner occupied | Loans Not Past Due
Financing Receivable, Past Due [Line Items]
Total loans receivable	977,658	1,053,891
Commercial and industrial
Financing Receivable, Past Due [Line Items]
Total loans receivable	652,620	449,224
Commercial and industrial | Total Past Due
Financing Receivable, Past Due [Line Items]
Total loans receivable	1,922	453
Commercial and industrial | 30-59 Days Past Due
Financing Receivable, Past Due [Line Items]
Total loans receivable	1,472	25
Commercial and industrial | 60-89 Days Past Due
Financing Receivable, Past Due [Line Items]
Total loans receivable	450	151
Commercial and industrial | 90 Days or Greater Past Due
Financing Receivable, Past Due [Line Items]
Total loans receivable	0	277
Commercial and industrial | Loans Not Past Due
Financing Receivable, Past Due [Line Items]
Total loans receivable	650,698	448,771
Residential real estate
Financing Receivable, Past Due [Line Items]
Total loans receivable	2,813,209	2,479,701
Residential real estate | Total Past Due
Financing Receivable, Past Due [Line Items]
Total loans receivable	3,963	13,966
Residential real estate | 30-59 Days Past Due
Financing Receivable, Past Due [Line Items]
Total loans receivable	6	9,705
Residential real estate | 60-89 Days Past Due
Financing Receivable, Past Due [Line Items]
Total loans receivable	1,821	1,586
Residential real estate | 90 Days or Greater Past Due
Financing Receivable, Past Due [Line Items]
Total loans receivable	2,136	2,675
Residential real estate | Loans Not Past Due
Financing Receivable, Past Due [Line Items]
Total loans receivable	2,809,246	2,465,735
Other consumer
Financing Receivable, Past Due [Line Items]
Total loans receivable	261,510	260,819
Other consumer | Total Past Due
Financing Receivable, Past Due [Line Items]
Total loans receivable	2,889	3,607
Other consumer | 30-59 Days Past Due
Financing Receivable, Past Due [Line Items]
Total loans receivable	671	339
Other consumer | 60-89 Days Past Due
Financing Receivable, Past Due [Line Items]
Total loans receivable	417	322
Other consumer | 90 Days or Greater Past Due
Financing Receivable, Past Due [Line Items]
Total loans receivable	1,801	2,946
Other consumer | Loans Not Past Due
Financing Receivable, Past Due [Line Items]
Total loans receivable	$ 258,621	$ 257,212