Note 8. Note Payable - Related Party (Detail) (USD $)	3 Months Ended	6 Months Ended
	Jun. 30, 2012	Jun. 30, 2012	Dec. 08, 2015	Dec. 31, 2012	Dec. 31, 2011	Jun. 30, 2011	Mar. 31, 2011	Dec. 31, 2010	Dec. 21, 2010	Dec. 12, 2005
Line of Credit Facility, Maximum Borrowing Capacity	$ 3,000,000	$ 3,000,000							$ 3,000,000
Line of Credit Facility, Amount Outstanding	500,000	500,000					500,000
Debt Instrument, Interest Rate, Stated Percentage				14.00%
Number of Years										10 years
Class of Warrant or Right, Exercise Price of Warrants or Rights (in Dollars per Item)	0.35	0.35	1.21		0.35	0.35		0.36
Class of Warrant or Right, Number of Securities Called by Warrants or Rights (in Shares)	1,235,877	1,235,877			1,235,877	1,235,877		1,498,377
Amortization of Deferred Charges	40,000	81,000
Finite-Lived Intangible Assets, Amortization Expense, Next Twelve Months	160,000	160,000
Warrant Issued in Connection with Credit Agreement [Member]
Number of Years	10 years	10 years							10 years
Class of Warrant or Right, Exercise Price of Warrants or Rights (in Dollars per Item)								0.01
Class of Warrant or Right, Number of Securities Called by Warrants or Rights (in Shares)	881,331	881,331
Initial Warrant Shares [Member]
Number of Years									5 years
Class of Warrant or Right, Number of Securities Called by Warrants or Rights (in Shares)								881,331
Warrants and Rights Outstanding									$ 723,541
Conditional Warrant Shares [Member]
Percent of Fully Diluted Shares								1.00%