Loans Receivable and Allowance for Credit Losses - Payment Status Recorded Investment (Details) $ in Thousands	Mar. 31, 2023 USD ($)
Financing Receivable Allowance for Credit Losses
Financing Receivable, Modified, Accumulated	$ 35,619
Current Accruing Loans
Financing Receivable Allowance for Credit Losses
Financing Receivable, Modified, Accumulated	28,674
30 - 89 Days Past Due
Financing Receivable Allowance for Credit Losses
Financing Receivable, Modified, Accumulated	6,945
90+ Days Past Due
Financing Receivable Allowance for Credit Losses
Financing Receivable, Modified, Accumulated	0
Commercial lending
Financing Receivable Allowance for Credit Losses
Financing Receivable, Modified, Accumulated	34,881
Commercial lending | Current Accruing Loans
Financing Receivable Allowance for Credit Losses
Financing Receivable, Modified, Accumulated	27,936
Commercial lending | 30 - 89 Days Past Due
Financing Receivable Allowance for Credit Losses
Financing Receivable, Modified, Accumulated	6,945
Commercial lending | 90+ Days Past Due
Financing Receivable Allowance for Credit Losses
Financing Receivable, Modified, Accumulated	0
Commercial lending | Commercial and industrial (“C&I”)
Financing Receivable Allowance for Credit Losses
Financing Receivable, Modified, Accumulated	34,338
Commercial lending | Commercial and industrial (“C&I”) | Current Accruing Loans
Financing Receivable Allowance for Credit Losses
Financing Receivable, Modified, Accumulated	27,393
Commercial lending | Commercial and industrial (“C&I”) | 30 - 89 Days Past Due
Financing Receivable Allowance for Credit Losses
Financing Receivable, Modified, Accumulated	6,945
Commercial lending | Commercial and industrial (“C&I”) | 90+ Days Past Due
Financing Receivable Allowance for Credit Losses
Financing Receivable, Modified, Accumulated	0
Commercial lending | CRE
Financing Receivable Allowance for Credit Losses
Financing Receivable, Modified, Accumulated	543
Commercial lending | CRE | Current Accruing Loans
Financing Receivable Allowance for Credit Losses
Financing Receivable, Modified, Accumulated	543
Commercial lending | CRE | 30 - 89 Days Past Due
Financing Receivable Allowance for Credit Losses
Financing Receivable, Modified, Accumulated	0
Commercial lending | CRE | 90+ Days Past Due
Financing Receivable Allowance for Credit Losses
Financing Receivable, Modified, Accumulated	0
Consumer lending
Financing Receivable Allowance for Credit Losses
Financing Receivable, Modified, Accumulated	738
Consumer lending | Current Accruing Loans
Financing Receivable Allowance for Credit Losses
Financing Receivable, Modified, Accumulated	738
Consumer lending | 30 - 89 Days Past Due
Financing Receivable Allowance for Credit Losses
Financing Receivable, Modified, Accumulated	0
Consumer lending | 90+ Days Past Due
Financing Receivable Allowance for Credit Losses
Financing Receivable, Modified, Accumulated	0
Consumer lending | HELOCs
Financing Receivable Allowance for Credit Losses
Financing Receivable, Modified, Accumulated	738
Consumer lending | HELOCs | Current Accruing Loans
Financing Receivable Allowance for Credit Losses
Financing Receivable, Modified, Accumulated	738
Consumer lending | HELOCs | 30 - 89 Days Past Due
Financing Receivable Allowance for Credit Losses
Financing Receivable, Modified, Accumulated	0
Consumer lending | HELOCs | 90+ Days Past Due
Financing Receivable Allowance for Credit Losses
Financing Receivable, Modified, Accumulated	$ 0