Capitalized servicing assets (Tables)

12 Months Ended

Dec. 31, 2021

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,	2021			2020			2019			2021			2020			2019
	(In thousands)
Beginning balance	$	231,204		$	244,411		$	120,509		$	133,429		$	130,636		$	114,663
Originations		65,723			45,101			26,067			33,068			29,306			41,370
Purchases		—			—			144,326			—			—			—
Amortization		(55,874	)		(58,308	)		(46,491	)		(33,893	)		(26,513	)		(25,397	)
		241,053			231,204			244,411			132,604			133,429			130,636
Valuation allowance		(24,000	)		(30,000	)		(7,000	)		—			—			—
Ending balance, net	$	217,053		$	201,204		$	237,411		$	132,604		$	133,429		$	130,636

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		12.92	%
Impact on fair value of 10% adverse change	$	(13,587	)
Impact on fair value of 20% adverse change		(26,047	)
Weighted-average OAS		8.94	%
Impact on fair value of 10% adverse change	$	(7,621	)
Impact on fair value of 20% adverse change		(14,786	)
Weighted-average discount rate					18.00	%
Impact on fair value of 10% adverse change				$	(6,892	)
Impact on fair value of 20% adverse change					(13,306	)