Capitalized servicing assets (Tables)

12 Months Ended

Dec. 31, 2016

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,	2016			2015			2014			2016			2015			2014
	(In thousands)
Beginning balance	$	118,303		$	109,871		$	126,377		$	83,692		$	72,939		$	72,499
Originations		28,618			35,556			28,285			40,117			29,914			15,922
Purchases		638			243			289			—			—			730
Amortization		(30,208	)		(27,367	)		(45,080	)		(20,045	)		(19,161	)		(16,212	)
		117,351			118,303			109,871			103,764			83,692			72,939
Valuation allowance		—			—			—			—			—			—
Ending balance, net	$	117,351		$	118,303		$	109,871		$	103,764		$	83,692		$	72,939
	Other									Total
For the Year Ended December 31,	2016			2015			2014			2016			2015			2014
	(In thousands)
Beginning balance	$	729		$	4,107		$	11,225		$	202,724		$	186,917		$	210,101
Originations		—			—			—			68,735			65,470			44,207
Purchases		—			—			—			638			243			1,019
Amortization		(729	)		(3,378	)		(7,118	)		(50,982	)		(49,906	)		(68,410	)
		—			729			4,107			221,115			202,724			186,917
Valuation allowance		—			—			—			—			—			—
Ending balance, net	$	—		$	729		$	4,107		$	221,115		$	202,724		$	186,917

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

	Residential			Commercial
Weighted-average prepayment speeds		11.30	%
Impact on fair value of 10% adverse change	$	(8,525,000	)
Impact on fair value of 20% adverse change		(16,390,000	)
Weighted-average OAS		10.95	%
Impact on fair value of 10% adverse change	$	(7,106,000	)
Impact on fair value of 20% adverse change		(13,779,000	)
Weighted-average discount rate					18.00	%
Impact on fair value of 10% adverse change				$	(5,285,000	)
Impact on fair value of 20% adverse change					(10,186,000	)