Regulatory Matters (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended	12 Months Ended			1 Months Ended	3 Months Ended		1 Months Ended	3 Months Ended
	Mar. 31, 2013	Dec. 31, 2012	Mar. 31, 2013 Bank	Dec. 31, 2012 Bank	Oct. 31, 2010 OCC Consent Order Bank	Mar. 31, 2013 OCC Consent Order Bank Minimum item	Nov. 30, 2010 OCC Consent Order Bank Minimum	Oct. 31, 2010 OCC Consent Order Bank Maximum	Mar. 31, 2013 Agreement Maximum
Regulatory Matters
Number of directors in the committee						3
Term of strategic plan					3 years
Period after the receipt of a determination of no supervisory objection for definitive agreement								90 days
Term of capital plan					3 years
Risk based capital (as a percent)	10.69%	10.20%	12.26%	11.79%			13.00%
Tier 1 Capital (as a percent)	4.42%	4.07%	7.73%	7.20%			9.00%
Period of notification to the Reserve Bank from the end of the quarter in which the entity's capital ratios fall below approved capital plan's minimum ratios									45 days
Period for submission of cash flow projection for subsequent year prior to beginning of such year									1 month
Period of submission of progress report from end of each calendar quarter									30 days
Professional and consulting fees	$ 45	$ 585