Mortgage Servicing Rights, Net (Tables)

9 Months Ended

Sep. 30, 2017

Transfers And Servicing [Abstract]

Summary of Changes In Carrying Amount of Mortgage Servicing Rights

The changes in the carrying amount of mortgage servicing rights for the three and nine months ended September 30, 2017 and 2016 were as follows (in thousands):

	Three Months Ended September 30,						Nine Months Ended September 30,
	2017			2016			2017			2016
Mortgage Servicing Rights
Beginning balance	$	381,908		$	292,809		$	347,558		$	271,849
Additions		29,549			46,293			98,814			92,555
Purchases from an affiliate		—			198			577			2,379
Purchases from third parties		—			3,465			—			3,465
Amortization		(19,183	)		(15,278	)		(54,675	)		(42,761	)
Ending balance	$	392,274		$	327,487		$	392,274		$	327,487
Valuation Allowance
Beginning balance	$	(5,481	)	$	(11,377	)	$	(7,742	)	$	(7,936	)
Decrease (increase)		(658	)		(2,181	)		1,603			(5,622	)
Ending balance		(6,139	)		(13,558	)		(6,139	)		(13,558	)
Net balance	$	386,135		$	313,929		$	386,135		$	313,929

Schedule of Contractually Specified Servicing Fees and Ancillary Fees Earned

The amount of contractually specified servicing fees (including primary and special servicing fees) and ancillary fees (including yield maintenance fees) earned by the Company were as follows:

	Three Months Ended September 30,				Nine Months Ended September 30,
	2017		2016			2017		2016
Servicing fees	$	24,721	$	19,985		$	70,505	$	56,617
Escrow interest and placement fees		2,835		945			6,315		2,584
Ancillary fees		1,501		1,572			3,909		2,998
Total Servicing fees	$	29,057	$	22,502		$	80,729	$	62,199