Fair Value (Tables)

12 Months Ended

Dec. 31, 2015

Fair Value Disclosures [Abstract]

Assets Measured at Fair Value on Recurring Basis

(in thousands)
				Quoted Prices
				in Active		Significant
				Markets for		Other		Significant
				Identical		Observable		Unobservable
		Fair Value		Assets		Inputs		Inputs
		Measurements		(Level 1)		(Level 2)		(Level 3)
December 31, 2015
Mortgage-backed securities	$	2,158,010	$	-	$	2,158,010	$	-
Eurodollar and T-Note futures contracts		8,483		8,483		-		-
Receiver swaptions		669		-		669		-
December 31, 2014
Mortgage-backed securities	$	1,549,171	$	-	$	1,549,171	$	-
Eurodollar futures contracts		5,174		5,174		-		-
Payer swaptions		1,217		-		1,217		-