Loans - Composition of Loan Portfolio (Details) - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of deferred fees	$ 8,294,057	$ 7,866,050
Non-owner occupied commercial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of deferred fees	2,980,811	2,906,014
Owner occupied commercial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of deferred fees	1,299,977	1,246,189
Multifamily
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of deferred fees	1,361,628	1,260,814
Non-owner occupied residential
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of deferred fees	208,560	218,026
Commercial, industrial and other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of deferred fees	632,919	606,711
Construction
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of deferred fees	333,998	380,100
Equipment finance
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of deferred fees	174,946	151,574
Residential mortgage
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of deferred fees	956,535	765,552
Home equity and consumer
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of deferred fees	$ 344,683	$ 331,070