Loans Receivable and Allowance for Credit Losses - Credit Risk Ratings by Loan Segment (Details) - USD ($) $ in Thousands	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Financing Receivable Recorded Investment [Line Items]
Total	$ 2,624,910	$ 2,308,020	$ 1,921,572
Multifamily
Financing Receivable Recorded Investment [Line Items]
Total	756,542	670,159	550,559
Nonresidential
Financing Receivable Recorded Investment [Line Items]
Total	526,210	389,898	342,343
Construction and Land
Financing Receivable Recorded Investment [Line Items]
Total	854,096	733,660	503,925
Business Loans
Financing Receivable Recorded Investment [Line Items]
Total	53,063	40,849	19,779
Consumer
Financing Receivable Recorded Investment [Line Items]
Total	$ 625	$ 1,038	$ 8,966

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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+ Details

- Definition

Amortized cost, before allowance for credit loss, of financing receivable. Excludes financing receivable covered under loss sharing agreement and net investment in lease.

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