v3.26.1
Borrowings, FHLB Stock and Subordinated Notes - Schedule of Borrowing Capacity from the FHLB (Details) - USD ($)
$ in Thousands
Jun. 30, 2026
Dec. 31, 2025
Line of Credit Facility [Line Items]    
Advance equivalent of collateral $ 894,056 $ 907,643
FHLB of Des Moines    
Line of Credit Facility [Line Items]    
Amount available to borrow under credit facility 485,376 347,095
Remaining FHLB borrowing capacity 201,708 187,665
FHLB of Des Moines | Notional amount of letters of credit outstanding    
Line of Credit Facility [Line Items]    
Notional amount of letters of credit outstanding 15,000 14,000
FHLB of Des Moines | One-to-four family loans | Asset Pledged as Collateral    
Line of Credit Facility [Line Items]    
Advance equivalent of collateral 197,352 190,290
FHLB of Des Moines | Commercial and multifamily loans | Asset Pledged as Collateral    
Line of Credit Facility [Line Items]    
Advance equivalent of collateral 19,080 21,097
FHLB of Des Moines | Home equity loans | Asset Pledged as Collateral    
Line of Credit Facility [Line Items]    
Advance equivalent of collateral $ 275 $ 278