Note 10. Regulatory Matters (Detail) - The Bank’s Actual and Required Capital Amounts (USD $) In Thousands, unless otherwise specified	Jun. 30, 2012		Dec. 31, 2011		Dec. 31, 2010
Tangible Capital to Tangible Assets - Amount	$ 67,234		$ 64,839
Tangible Capital to Tangible Assets - Ratio	12.12%		11.22%
Tangible Capital to Tangible Assets - For Capital Adequacy Purposes Amount	8,320		8,666
Tangible Capital to Tangible Assets - For Capital Adequacy Purposes Ratio	1.50%		1.50%
Core Capital to Adjusted Tangible Assets - Actual Amount	67,234		64,839
Core Capital to Adjusted Tangible Assets - Actual Ratio	12.12%		11.22%
Core Capital to Adjusted Tangible Assets - For Capital Adequacy Purposes Amount	22,188		23,111
Core Capital to Adjusted Tangible Assets - For Capital Adequacy Purposes Ratio	4.00%		4.00%
Total Capital to Risk-Weighted Assets - Actual Amount	71,901		69,466
Total Capital to Risk-Weighted Assets - Actual Ratio	19.93%		19.62%
Total Capital to Risk-Weighted Assets - For Capital Adequacy Purposes Amount	28,862		28,319
Total Capital to Risk-Weighted Assets - For Capital Adequacy Purposes Ratio	8.00%		8.00%
Tier I Capital to Risk-Weighted Assets - Actual Amount	67,234		64,839
Tier I Capital to Risk-Weighted Assets - Actual Ratio	18.64%		18.32%
To be Categorized as Adequatey Capitalized Under Prompt Corrective Action Provisions [Member]
Core Capital to Adjusted Tangible Assets - For Capital Adequacy Purposes Amount	22,188		23,111
Core Capital to Adjusted Tangible Assets - For Capital Adequacy Purposes Ratio	4.00%		4.00%
Total Capital to Risk-Weighted Assets - For Capital Adequacy Purposes Amount	28,862		28,319
Total Capital to Risk-Weighted Assets - For Capital Adequacy Purposes Ratio	8.00%		8.00%
Tier I Capital to Risk-Weighted Assets - For Capital Adequacy Purposes Amount	14,431		14,160
Tier I Capital to Risk-Weighted Assets - For Capital Adequacy Purposes Ratio	4.00%		4.00%
Required Per Bank Order [Member]
Core Capital to Adjusted Tangible Assets - For Capital Adequacy Purposes Amount	44,375	[1]	46,221	[1]
Core Capital to Adjusted Tangible Assets - For Capital Adequacy Purposes Ratio	8.00%		8.00%		8.00%
Total Capital to Risk-Weighted Assets - For Capital Adequacy Purposes Amount	$ 43,293	[1]	$ 42,479	[1]
Total Capital to Risk-Weighted Assets - For Capital Adequacy Purposes Ratio	12.00%		12.00%		12.00%

[1] The Bank Order states that no later than December 31, 2010, the Bank shall achieve and maintain a Tier 1 (Core) Capital Ratio of at least 8% and a Total Risk-Based Capital Ratio of at least 12%. The required amounts presented reflect these ratios.