Mortgage-Backed Securities (Tables)

3 Months Ended

Mar. 31, 2017

Mortgage Backed Securities [Abstract]

Schedule of Mortgage-Backed Securities Reconciliation

(in thousands)
		March 31, 2017		December 31, 2016
Pass-Through RMBS Certificates:
	Hybrid Adjustable-rate Mortgages	$	43,756	$	45,459
	Adjustable-rate Mortgages		1,947		2,062
	Fixed-rate Mortgages		3,061,957		2,826,694
	Total Pass-Through Certificates		3,107,660		2,874,215
Structured RMBS Certificates:
	Interest-Only Securities		107,214		69,726
	Inverse Interest-Only Securities		47,143		78,233
	Total Structured RMBS Certificates		154,357		147,959
Total		$	3,262,017	$	3,022,174

Schedule Of Mortgage-Backed Securities by Contractual Maturity

(in thousands)
	March 31, 2017		December 31, 2016
Greater than one year and less than five years	$	113	$	157
Greater than five years and less than ten years		234		277
Greater than or equal to ten years		3,261,670		3,021,740
Total	$	3,262,017	$	3,022,174