Loans Receivable, Net - Aging of Recorded Investment in Past Due Loans Excluding PCI Loans (Details) - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021
Financing Receivable, Past Due [Line Items]
Total Past Due	$ 9,918,054	$ 8,622,870
Total Past Due
Financing Receivable, Past Due [Line Items]
Total Past Due	25,728	22,728
30-59 Days Past Due
Financing Receivable, Past Due [Line Items]
Total Past Due	8,095	12,385
60-89 Days Past Due
Financing Receivable, Past Due [Line Items]
Total Past Due	6,052	2,161
90 Days or Greater Past Due
Financing Receivable, Past Due [Line Items]
Total Past Due	11,581	8,182
Loans Not Past Due
Financing Receivable, Past Due [Line Items]
Total Past Due	9,892,326	8,600,142
Commercial real estate - investor
Financing Receivable, Past Due [Line Items]
Total Past Due	5,171,952	4,378,061
Commercial real estate - investor | Total Past Due
Financing Receivable, Past Due [Line Items]
Total Past Due	4,792	3,528
Commercial real estate - investor | 30-59 Days Past Due
Financing Receivable, Past Due [Line Items]
Total Past Due	217	1,717
Commercial real estate - investor | 60-89 Days Past Due
Financing Receivable, Past Due [Line Items]
Total Past Due	875	102
Commercial real estate - investor | 90 Days or Greater Past Due
Financing Receivable, Past Due [Line Items]
Total Past Due	3,700	1,709
Commercial real estate - investor | Loans Not Past Due
Financing Receivable, Past Due [Line Items]
Total Past Due	5,167,160	4,374,533
Commercial real estate – owner occupied
Financing Receivable, Past Due [Line Items]
Total Past Due	997,367	1,055,065
Commercial real estate – owner occupied | Total Past Due
Financing Receivable, Past Due [Line Items]
Total Past Due	3,973	1,174
Commercial real estate – owner occupied | 30-59 Days Past Due
Financing Receivable, Past Due [Line Items]
Total Past Due	143	599
Commercial real estate – owner occupied | 60-89 Days Past Due
Financing Receivable, Past Due [Line Items]
Total Past Due	80	0
Commercial real estate – owner occupied | 90 Days or Greater Past Due
Financing Receivable, Past Due [Line Items]
Total Past Due	3,750	575
Commercial real estate – owner occupied | Loans Not Past Due
Financing Receivable, Past Due [Line Items]
Total Past Due	993,394	1,053,891
Commercial and industrial
Financing Receivable, Past Due [Line Items]
Total Past Due	622,372	449,224
Commercial and industrial | Total Past Due
Financing Receivable, Past Due [Line Items]
Total Past Due	386	453
Commercial and industrial | 30-59 Days Past Due
Financing Receivable, Past Due [Line Items]
Total Past Due	159	25
Commercial and industrial | 60-89 Days Past Due
Financing Receivable, Past Due [Line Items]
Total Past Due	47	151
Commercial and industrial | 90 Days or Greater Past Due
Financing Receivable, Past Due [Line Items]
Total Past Due	180	277
Commercial and industrial | Loans Not Past Due
Financing Receivable, Past Due [Line Items]
Total Past Due	621,986	448,771
Residential real estate
Financing Receivable, Past Due [Line Items]
Total Past Due	2,861,991	2,479,701
Residential real estate | Total Past Due
Financing Receivable, Past Due [Line Items]
Total Past Due	13,449	13,966
Residential real estate | 30-59 Days Past Due
Financing Receivable, Past Due [Line Items]
Total Past Due	7,003	9,705
Residential real estate | 60-89 Days Past Due
Financing Receivable, Past Due [Line Items]
Total Past Due	4,377	1,586
Residential real estate | 90 Days or Greater Past Due
Financing Receivable, Past Due [Line Items]
Total Past Due	2,069	2,675
Residential real estate | Loans Not Past Due
Financing Receivable, Past Due [Line Items]
Total Past Due	2,848,542	2,465,735
Other consumer
Financing Receivable, Past Due [Line Items]
Total Past Due	264,372	260,819
Other consumer | Total Past Due
Financing Receivable, Past Due [Line Items]
Total Past Due	3,128	3,607
Other consumer | 30-59 Days Past Due
Financing Receivable, Past Due [Line Items]
Total Past Due	573	339
Other consumer | 60-89 Days Past Due
Financing Receivable, Past Due [Line Items]
Total Past Due	673	322
Other consumer | 90 Days or Greater Past Due
Financing Receivable, Past Due [Line Items]
Total Past Due	1,882	2,946
Other consumer | Loans Not Past Due
Financing Receivable, Past Due [Line Items]
Total Past Due	$ 261,244	$ 257,212