Borrowings (Tables)

12 Months Ended

Dec. 31, 2015

Disclosure of Borrowings [Abstract]

Schedule of Repurchase Agreements

($ in thousands)
		OVERNIGHT		BETWEEN 2		BETWEEN 31			GREATER
		(1 DAY OR		AND		AND			THAN
		LESS)		30 DAYS		90 DAYS			90 DAYS		TOTAL
December 31, 2015
Fair market value of securities pledged, including
	accrued interest receivable	$	-	$	1,894,491	$	14,801	$	-	$	1,909,292
Repurchase agreement liabilities associated with
	these securities	$	-	$	1,789,338	$	9,475	$	-	$	1,798,813
Net weighted average borrowing rate			-		0.64%		1.19%		-		0.64%
December 31, 2014
Fair market value of securities pledged, including
	accrued interest receivable	$	-	$	984,823	$	534,238	$	3,844	$	1,522,905
Repurchase agreement liabilities associated with
	these securities	$	-	$	929,831	$	502,947	$	3,873	$	1,436,651
Net weighted average borrowing rate			-		0.36%		0.37%		0.38%		0.36%