Mortgage-Backed Securities (Tables)

6 Months Ended

Jun. 30, 2017

Mortgage Backed Securities [Abstract]

Schedule of Mortgage-Backed Securities Reconciliation

(in thousands)
		June 30, 2017		December 31, 2016
Pass-Through RMBS Certificates:
	Hybrid Adjustable-rate Mortgages	$	42,881	$	45,459
	Adjustable-rate Mortgages		1,929		2,062
	Fixed-rate Mortgages		3,545,614		2,826,694
	Total Pass-Through Certificates		3,590,424		2,874,215
Structured RMBS Certificates:
	Interest-Only Securities		102,552		69,726
	Inverse Interest-Only Securities		44,851		78,233
	Total Structured RMBS Certificates		147,403		147,959
Total		$	3,737,827	$	3,022,174

Schedule Of Mortgage-Backed Securities by Contractual Maturity

(in thousands)
	June 30, 2017		December 31, 2016
Greater than one year and less than five years	$	77	$	157
Greater than five years and less than ten years		198		277
Greater than or equal to ten years		3,737,552		3,021,740
Total	$	3,737,827	$	3,022,174