Note 7. Stock-Based Awards (Detail) - Restricted Stock Activity (USD $)	1 Months Ended					6 Months Ended
	Sep. 30, 2011	Dec. 31, 2010	Jun. 30, 2010	Mar. 31, 2010	Nov. 30, 2009	Sep. 30, 2012
Vested	1,229,105	37,879	151,515	189,394	272,727	1,880,620
Restricted Stock [Member]
Nonvested - Number of Shares						306,606
Nonvested - Weighted Average Grant Price (in Dollars per share)						2.50
Granted						40,000
Granted (in Dollars per share)						1.40
Vested						(124,723)
Vested (in Dollars per share)						2.46
Forfeited						(44,733)
Forfeited (in Dollars per share)						2.65
Nonvested - Number of Shares						177,150
Nonvested - Weighted Average Grant Price (in Dollars per share)						2.25