Loans Receivable, Net - Aging of Recorded Investment in Past Due Loans Excluding PCI Loans (Details) - USD ($) $ in Thousands	Jun. 30, 2022	Dec. 31, 2021
Financing Receivable, Past Due [Line Items]
Total loans receivable	$ 9,424,885	$ 8,622,870
Total Past Due
Financing Receivable, Past Due [Line Items]
Total loans receivable	15,605	22,728
30-59 Days Past Due
Financing Receivable, Past Due [Line Items]
Total loans receivable	3,591	12,385
60-89 Days Past Due
Financing Receivable, Past Due [Line Items]
Total loans receivable	5,967	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	9,409,280	8,600,142
Commercial real estate – investor
Financing Receivable, Past Due [Line Items]
Total loans receivable	4,808,965	4,378,061
Commercial real estate – investor | Total Past Due
Financing Receivable, Past Due [Line Items]
Total loans receivable	4,227	3,528
Commercial real estate – investor | 30-59 Days Past Due
Financing Receivable, Past Due [Line Items]
Total loans receivable	1,667	1,717
Commercial real estate – investor | 60-89 Days Past Due
Financing Receivable, Past Due [Line Items]
Total loans receivable	978	102
Commercial real estate – investor | 90 Days or Greater Past Due
Financing Receivable, Past Due [Line Items]
Total loans receivable	1,582	1,709
Commercial real estate – investor | Loans Not Past Due
Financing Receivable, Past Due [Line Items]
Total loans receivable	4,804,738	4,374,533
Commercial real estate – owner occupied
Financing Receivable, Past Due [Line Items]
Total loans receivable	1,020,873	1,055,065
Commercial real estate – owner occupied | Total Past Due
Financing Receivable, Past Due [Line Items]
Total loans receivable	2,149	1,174
Commercial real estate – owner occupied | 30-59 Days Past Due
Financing Receivable, Past Due [Line Items]
Total loans receivable	181	599
Commercial real estate – owner occupied | 60-89 Days Past Due
Financing Receivable, Past Due [Line Items]
Total loans receivable	1,883	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	1,018,724	1,053,891
Commercial and industrial
Financing Receivable, Past Due [Line Items]
Total loans receivable	584,464	449,224
Commercial and industrial | Total Past Due
Financing Receivable, Past Due [Line Items]
Total loans receivable	1,250	453
Commercial and industrial | 30-59 Days Past Due
Financing Receivable, Past Due [Line Items]
Total loans receivable	1,112	25
Commercial and industrial | 60-89 Days Past Due
Financing Receivable, Past Due [Line Items]
Total loans receivable	138	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	583,214	448,771
Residential real estate
Financing Receivable, Past Due [Line Items]
Total loans receivable	2,758,269	2,479,701
Residential real estate | Total Past Due
Financing Receivable, Past Due [Line Items]
Total loans receivable	5,142	13,966
Residential real estate | 30-59 Days Past Due
Financing Receivable, Past Due [Line Items]
Total loans receivable	0	9,705
Residential real estate | 60-89 Days Past Due
Financing Receivable, Past Due [Line Items]
Total loans receivable	2,690	1,586
Residential real estate | 90 Days or Greater Past Due
Financing Receivable, Past Due [Line Items]
Total loans receivable	2,452	2,675
Residential real estate | Loans Not Past Due
Financing Receivable, Past Due [Line Items]
Total loans receivable	2,753,127	2,465,735
Other consumer
Financing Receivable, Past Due [Line Items]
Total loans receivable	252,314	260,819
Other consumer | Total Past Due
Financing Receivable, Past Due [Line Items]
Total loans receivable	2,837	3,607
Other consumer | 30-59 Days Past Due
Financing Receivable, Past Due [Line Items]
Total loans receivable	631	339
Other consumer | 60-89 Days Past Due
Financing Receivable, Past Due [Line Items]
Total loans receivable	278	322
Other consumer | 90 Days or Greater Past Due
Financing Receivable, Past Due [Line Items]
Total loans receivable	1,928	2,946
Other consumer | Loans Not Past Due
Financing Receivable, Past Due [Line Items]
Total loans receivable	$ 249,477	$ 257,212