Derivative Financial Instruments (Tables)

12 Months Ended

Dec. 31, 2014

Derivative Financial Instruments [Abstract]

Schedule of Derivative Instruments

(in thousands)
Derivative Instruments and Related Accounts	Balance Sheet Location	2014		2013
Assets
Eurodollar futures - Margin posted to counterparty	Restricted cash	$	5,174	$	2,446
Payer swaptions	Derivative assets, at fair value		1,217		-
		$	6,391	$	2,446
Liability
Payer swaptions - Margin posted by counterparty	Other liabilities	$	(1,364)	$	-

Schedule of Eurodollar Positions

($ in thousands)
	2014					2013
			Average					Average
	Weighted		Contract			Weighted		Contract
	Average		Notional		Open	Average		Notional		Open
Expiration Year	LIBOR Rate		Amount		Equity(1)	LIBOR Rate		Amount		Equity(1)
2014	-	$	-	$	-	0.40%	$	262,500	$	(189)
2015	0.63%		650,000		(1,039)	0.80%		275,000		(146)
2016	1.54%		800,000		139	1.90%		250,000		1,367
2017	2.23%		800,000		(1,041)	3.03%		250,000		2,291
2018	2.54%		800,000		(2,361)	3.77%		250,000		1,575
Total / Weighted Average	1.73%	$	760,000	$	(4,302)	2.02%	$	257,353	$	4,898

Schedule Of Interest Rate Swaption Agreements Outstanding [Table Text Block]

($ in thousands)
	Option					Underlying Swap
					Weighted					Weighted
					Average			Fixed	Receive	Average
				Fair	Months to		Notional	Pay	Rate	Term
Expiration		Cost		Value	Expiration		Amount	Rate	(LIBOR)	(Years)
≤ 1 year	$	5,350	$	1,217	6	$	375,000	2.79%	3 Month	7.3

Income Statement Effect of Derivatives [Table Text Block]

(in thousands)
		2014		2013		2012
Eurodollar futures contracts (short positions)	$	(9,558)	$	4,828	$	(40)
T-Note futures contract (short position)		72		-		-
Payer swaptions		(4,439)		-		-
	$	(13,925)	$	4,828	$	(40)