Capitalized servicing assets (Tables)

12 Months Ended

Dec. 31, 2022

Transfers and Servicing [Abstract]

Servicing Asset at Amortized Cost

Changes in capitalized servicing assets were as follows:

	Residential Mortgage Loans									Commercial Mortgage Loans
For the Year Ended December 31,	2022			2021			2020			2022			2021			2020
	(In thousands)
Beginning balance	$	241,053		$	231,204		$	244,411		$	132,604		$	133,429		$	130,636
Originations		6,998			65,723			45,101			24,401			33,068			29,306
Acquired in business    combination		12,133			—			—			—			—			—
Amortization		(65,849	)		(55,874	)		(58,308	)		(30,614	)		(33,893	)		(26,513	)
		194,335			241,053			231,204			126,391			132,604			133,429
Valuation allowance		—			(24,000	)		(30,000	)		—			—			—
Ending balance, net	$	194,335		$	217,053		$	201,204		$	126,391		$	132,604		$	133,429

Economic Assumptions Used to Determine Fair Value of Capitalized Servicing Rights and Sensitivity of Value to Changes in Assumptions

	Residential			Commercial
	(Dollars in thousands)
Weighted-average prepayment speeds		7.27	%
Impact on fair value of 10% adverse change	$	(8,471	)
Impact on fair value of 20% adverse change		(16,417	)
Weighted-average OAS		8.81	%
Impact on fair value of 10% adverse change	$	(10,226	)
Impact on fair value of 20% adverse change		(19,830	)
Weighted-average discount rate					18.00	%
Impact on fair value of 10% adverse change				$	(6,467	)
Impact on fair value of 20% adverse change					(12,498	)