Quarterly report pursuant to Section 13 or 15(d)

Stock-Based Compensation (Details 3)

Stock-Based Compensation (Details 3) (USD $)	3 Months Ended		6 Months Ended		9 Months Ended
Stock-Based Compensation (Details 3) (USD $)	Dec. 31, 2014	Dec. 31, 2013	Sep. 30, 2014	Sep. 30, 2013	Dec. 31, 2014	Dec. 31, 2013
Additional disclosure
Stock-based compensation expense	$ 571,000	$ 481,000			$ 1,795,000	$ 1,664,000
Stock options
Shares
Outstanding at the beginning of the period (in shares)			12,851,688		12,851,688
Granted (in shares)	0	0			1,085,800
Forfeited, cancelled or expired (in shares)					(307,572)
Outstanding at the end of the period (in shares)	13,307,675				13,307,675
Vested and expected to vest (in shares)	13,307,675				13,307,675
Options exercisable	10,393,134				10,393,134
Exercised (in shares)					(322,241)
Weighted Average Exercise Price
Outstanding at the beginning of the period (in dollars per share)			$ 1.27		$ 1.27
Granted (in dollars per share)					$ 1.43
Forfeited, cancelled or expired (in dollars per share)					$ 1.82
Outstanding at the end of the period (in dollars per share)	$ 1.28				$ 1.28
Vested and expected to vest (in dollars per share)	$ 1.28				$ 1.28
Exercisable (in dollars per share)	$ 1.31				$ 1.31
Exercised (in dollars per share)					$ 0.94
Weighted Average Remaining Contractual Term (in years)
Outstanding at the end of the period					5 years
Vested and expected to vest					5 years
Exercisable					4 years
Aggregate Intrinsic Value
Outstanding at the end of the period	5,000				5,000
Vested or expected to vest	5,000				5,000
Exercisable	5,000				5,000
Additional disclosure
Stock-based compensation expense	200,000	200,000	800,000	900,000
Unrecognized compensation cost	1,800,000				1,800,000
Weighted average period for recognizing compensation cost					2 years 4 months 24 days
Total intrinsic value of options exercised during the period	1,000	10,000			100,000	10,000
Cash received from exercise of stock options	$ 6,600	$ 13,200			$ 300,000	$ 13,200
Weighted-average assumptions used to calculate estimated fair value of each stock option
Risk-free interest rates (as a percent)					1.80%	0.90%
Expected lives (in years)					5 years 8 months 12 days	5 years 8 months 12 days
Expected volatility (as a percent)					77.00%	77.30%
Weighted average grant date fair value of options granted during the period (in dollars per share)					$ 0.94	$ 0.93