Regulatory Matters (Tables)

12 Months Ended

Dec. 31, 2011

Regulatory Capital Requirements [Abstract]

Schedule of Compliance with Regulatory Capital Requirements under Banking Regulations

Consolidated
	Actual					Adequately Capitalized:					Well Capitalized:
As of December 31, 2011	Amount		Ratio			Amount		Ratio			Amount		Ratio
Total Capital
(to Risk Weighted Assets)	$	1,242,177	12.73	%	>	$	780,366	8.00	%	>	$	975,457	10.00	%
Tier I Capital
(to Risk Weighted Assets)	$	1,119,892	11.48	%	>	$	390,183	4.00	%	>	$	585,274	6.00	%
Tier I Capital
(to Average Assets)	$	1,119,892	7.95	%	>	$	563,321	4.00	%	>	$	704,151	5.00	%
Consolidated
	Actual					Adequately Capitalized:					Well Capitalized:
As of December 31, 2010	Amount		Ratio			Amount		Ratio			Amount		Ratio
Total Capital
(to Risk Weighted Assets)	$	1,176,429	12.82	%	>	$	733,977	8.00	%	>	$	917,471	10.00	%
Tier I Capital
(to Risk Weighted Assets)	$	1,061,466	11.57	%	>	$	366,988	4.00	%	>	$	550,483	6.00	%
Tier I Capital
(to Average Assets)	$	1,061,466	7.61	%	>	$	557,664	4.00	%	>	$	697,080	5.00	%

Bank Only
	Actual					Adequately Capitalized:					Well Capitalized:
As of December 31, 2011	Amount		Ratio			Amount		Ratio			Amount		Ratio
Total Capital
(to Risk Weighted Assets)	$	1,150,675	11.82	%	>	$	778,604	8.00	%	>	$	973,255	10.00	%
Tier I Capital
(to Risk Weighted Assets)	$	1,033,171	10.62	%	>	$	389,302	4.00	%	>	$	583,953	6.00	%
Tier I Capital
(to Average Assets)	$	1,033,171	7.35	%	>	$	562,343	4.00	%	>	$	702,929	5.00	%
Bank Only
	Actual					Adequately Capitalized:					Well Capitalized:
As of December 31, 2010	Amount		Ratio			Amount		Ratio			Amount		Ratio
Total Capital
(to Risk Weighted Assets)	$	1,081,203	11.79	%	>	$	733,866	8.00	%	>	$	917,332	10.00	%
Tier I Capital
(to Risk Weighted Assets)	$	970,566	10.58	%	>	$	366,933	4.00	%	>	$	550,399	6.00	%
Tier I Capital
(to Average Assets)	$	970,566	6.90	%	>	$	562,531	4.00	%	>	$	703,164	5.00	%