Note 10. Regulatory Matters (Detail)	6 Months Ended
	Jun. 30, 2012	Dec. 31, 2011	Jun. 30, 2012 Required Per Bank Order [Member]	Dec. 31, 2011 Required Per Bank Order [Member]	Dec. 31, 2010 Required Per Bank Order [Member]
Tier One Leverage Capital Required for Capital Adequacy to Average Assets	4.00%	4.00%	8.00%	8.00%	8.00%
Capital Required for Capital Adequacy to Risk Weighted Assets	8.00%	8.00%	12.00%	12.00%	12.00%
Stockholders' Equity, Reverse Stock Split	Company amended its Articles of Incorporation to effect a 1-for-5 reverse split (the "Reverse Split") of the Company's issued and outstanding shares of common stock effective May 3, 2011.