Stockholder's Equity (Details 3) (Stock options, USD $)	12 Months Ended
	Mar. 31, 2014	Mar. 31, 2013	Mar. 31, 2012	Mar. 31, 2011
Stock options
Number of shares
Outstanding at the beginning of the period (in shares)	4,167,893	3,126,177	2,534,226
Granted (in shares)	1,103,016	942,000	1,349,500
Increase due to acquisition of Storycode (in shares)		822,320
Exercised (in shares)	(223,866)	(17,770)	(43,640)
Forfeited (in shares)	(684,378)	(157,586)	(385,140)
Expired (in shares)	(953,232)	(547,248)	(328,769)
Outstanding at the end of the period (in shares)	3,409,433	4,167,893	3,126,177	2,534,226
Vested and expected to vest at the end of the period (in shares)	3,273,226
Exercisable at the end of the period (in shares)	2,269,548
Weighted Average Exercise Price
Outstanding at the beginning of the period (in dollars per share)	$ 2.53	$ 3.31	$ 3.32
Granted (in dollars per share)	$ 1.87	$ 2.07	$ 3.64
Increase due to acquisition of Storycode (in dollars per share)		$ 0.70
Exercised (in dollars per share)	$ 0.71	$ 1.37	$ 1.99
Forfeited (in dollars per share)	$ 2.85	$ 2.58	$ 3.89
Expired (in dollars per share)	$ 2.38	$ 3.45	$ 4.21
Outstanding at the end of the period (in dollars per share)	$ 2.41	$ 2.53	$ 3.31	$ 3.32
Vested and expected to vest at the end of the period (in dollars per share)	$ 2.44
Exercisable at the end of the period (in dollars per share)	$ 2.68
Weighted Average Remaining Contractual Term
Outstanding at the end of the period	7 years	6 years 4 months 24 days	6 years 4 months 24 days	5 years 10 months 24 days
Vested and expected to vest at the end of the period	6 years 10 months 24 days
Exercisable at the end of the period	6 years
Aggregate Intrinsic Value
Outstanding at the end of the period (in dollars)	$ 221,097	$ 1,013,910	$ 91,005	$ 3,374,573
Vested and expected to vest at the end of the period	212,718
Exercisable at the end of the period	127,048
Stock-based compensation, additional disclosure
Aggregate intrinsic value of options exercised (in dollars)	$ 220,000	$ 24,000	$ 67,790
Weighted average grant date fair value of awards granted (in dollars per share)	$ 1.23	$ 1.30	$ 1.98