Balance Sheet Offsetting (Tables)

3 Months Ended

Mar. 31, 2013

Balance Sheet Offsetting Disclosure [Abstract]

Balance Sheet Offsetting of Derivative Assets and Liabilities

March 31, 2013								Gross amounts not offset
	Gross		Gross amounts		Net amounts			in the balance sheet
	amounts		offset in the		presented in		Financial
	recognized		balance sheet		the balance sheet		instruments		Collateral	Net amount
	($ in Thousands)
Derivative assets:
Interest rate-related instruments		63		―		63		(63)	―		―
Derivative liabilities:
Interest rate-related instruments		66,771		―		66,771		(63)	(59,536)		7,172
December 31, 2012								Gross amounts not offset
	Gross		Gross amounts		Net amounts			in the balance sheet
	amounts		offset in the		presented in		Financial
	recognized		balance sheet		the balance sheet		instruments		Collateral	Net amount
	($ in Thousands)
Derivative assets:
Interest rate-related instruments		66		―		66		(66)	―		―
Derivative liabilities:
Interest rate-related instruments		73,067		―		73,067		(66)	(67,331)		5,670