Note 10. Warrants (Detail) - Summary of Warrant Activity (USD $)	1 Months Ended	9 Months Ended
	Sep. 30, 2009	Sep. 30, 2012
Number of Warrants Issued		11,627,001
Weighted Average Exercise Price (in Dollars per Item)		3.15
Aggregate intrinsic value of outstanding warrants at September 30, 2012 (in Dollars per share)		$ 22,232,473
Weighted average remaining contractual terms (years)	66 months	4 years 73 days
Warrants granted in connection with the Credit Agreement as more fully described in Note 9		5,544
Warrants exercised for common stock		(1,512,110)
Warrants exercised for common stock (in Dollars per share)		$ 2.58
Number of Warrants Issued		10,166,261
Weighted Average Exercise Price (in Dollars per Item)		3.23
Warrant [Member]
Warrants granted in connection with the Credit Agreement as more fully described in Note 9		51,370
Warrants granted in connection with the Credit Agreement as more fully described in Note 9 (in Dollars per share)		$ 2.92