Loans - Composition of Loan Portfolio (Details) - USD ($) $ in Thousands	Sep. 30, 2022	Dec. 31, 2021
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of deferred fees	$ 7,568,826	$ 5,976,148
Non-owner occupied commercial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of deferred fees	2,873,824	2,316,284
Owner occupied commercial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of deferred fees	1,141,290	908,449
Multifamily
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of deferred fees	1,186,036	972,233
Non-owner occupied residential
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of deferred fees	222,597	177,097
Commercial, industrial and other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of deferred fees	613,228	462,406
Construction
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of deferred fees	381,109	302,228
Equipment finance
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of deferred fees	137,999	123,212
Residential mortgage
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of deferred fees	690,453	438,710
Home equity and consumer
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of deferred fees	$ 322,290	$ 275,529