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Loan Servicing (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Loan Servicing
Balance, beginning of period	$ 146,248	$ 110,348	$ 82,604
Paydowns	(7,621)	(10,985)	(16,691)
Sold servicing			(438)
Changes in fair value due to changes in valuation inputs or assumptions used in the valuation model	4,562	19,761	12,395
Balance, end of period	158,457	146,248	110,348
Revenue from specified servicing fee	29,300	21,400	20,700
Escrow funds	1,300,000	777,700
Customer servicing loan	7,900,000	6,200,000
Purchased servicing
Loan Servicing
Additions	513		2,057
Originated servicing
Loan Servicing
Additions	$ 14,755	27,124	$ 30,421
Mortgage Loans
Loan Servicing
Sliding scale to deter prepayments (in years)	10 years
Unpaid principal balances of mortgage and other loans serviced for others	$ 15,300,000	13,100,000
Unpaid principal balances of loans subserviced for others	2,100,000	1,900,000
Unpaid principal balances of loans others servicing	721,100	663,100
Multi-family financing | Mortgage Loans
Loan Servicing
Unpaid principal balances of mortgage loan	$ 26,000,000	$ 21,900,000

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- Definition

The amount of revenue from servicing the loans retained, purchased and sun-serviced by the company.

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The duration of sliding scale to deter prepayments.

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Amount of unpaid principal balance of mortgage and other loans serviced for others.

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Amount of unpaid principal balance of mortgage loans other serviced.

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Amount of unpaid principal balance of mortgage loans serviced.

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Amount of unpaid principal balance of loans subserviced for others.

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The amount of loans serviced for customers that have loans on balance sheet.

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The designation of funds furnished by a borrower to a lender to assure future payments of the borrower's real estate taxes and insurance obligations with respect to a mortgaged property. Escrow deposits may be made for a variety of other purposes such as earnest money and contingent payments. This element excludes replacement reserves which are an escrow separately provided for within the US GAAP taxonomy.

+ References

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Amount conveyed to unrelated parties of contract to contract to service financial assets under which the benefits of servicing are expected to more than adequately compensate the servicer.

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The value of new servicing assets, subsequently measured at fair value, acquired or created during the current period through purchases or from transfers of financial assets.

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Fair value of an asset representing net future revenue from contractually specified servicing fees, late charges, and other ancillary revenues, in excess of future costs related to servicing arrangements.

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Amount of increase (decrease) in fair value from changes in the inputs, assumptions, or model used to calculate the fair value of the contract to service financial assets under which the benefits of servicing are expected to more than adequately compensate the servicer.

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Decrease in servicing assets subsequently measured at fair value resulting from conveyance of servicing rights to unrelated parties.

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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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