Note 9. Stock Warrants (Detail)	Dec. 08, 2015	Jun. 30, 2012	Dec. 31, 2011	Jun. 30, 2011	Dec. 31, 2010	Dec. 12, 2005	Jun. 30, 2012 Warrant Issued in Connection with Credit Agreement [Member]	Dec. 31, 2010 Warrant Issued in Connection with Credit Agreement [Member]	Dec. 21, 2010 Warrant Issued in Connection with Credit Agreement [Member]	Feb. 25, 2011 Warrants Issued in Connection with Private Placement Offering [Member]	Dec. 02, 2009 Warrants Issued in Connection with Private Placement Offering [Member]	Mar. 13, 2009 Warrants Issued in Connection with Private Placement Offering [Member]	Feb. 25, 2011 Cashless Exercise of Warrants [Member]	Dec. 02, 2009 Cashless Exercise of Warrants [Member]	Dec. 08, 2015 First Placement Agent [Member]	Dec. 08, 2015 Second Placement Agent [Member]
Class of Warrant or Right, Number of Securities Called by Warrants or Rights		1,235,877	1,235,877	1,235,877	1,498,377		881,331			262,500	87,500	350,000			338,182	16,364
Class of Warrant or Right, Exercise Price of Warrants or Rights (in Dollars per Item)	1.21	0.35	0.35	0.35	0.36			0.01				0.41
Number of Years						10 years	10 years		10 years
Common Stock, Shares, Issued													200,646	51,681