Bank Regulatory Capital (Tables)

6 Months Ended

Jun. 30, 2011

Deposits and Bank Regulatory Capital [Abstract]

Capital ratios and the minimum requirements

	June 30, 2011										December 31, 2010
	Actual					Minimum Required					Actual					Minimum Required
	Amount		Ratio			Amount		Ratio			Amount		Ratio			Amount		Ratio
	($ in thousands)
Tier-1 Leverage	$	820,788		13.47	%	$	304,639		5.00	%	$	756,821		13.15	%	$	287,830		5.00	%
Tier-1 Risk-Based Capital		820,788		17.40			282,979		6.00			756,821		16.86			269,335		6.00
Total Risk-Based Capital		880,378		18.67			707,448		15.00			813,822		18.13			673,336		15.00