(7) Accounting for Stock-Based Compensation (Detail) - (Table 1) (USD $)	9 Months Ended
	Dec. 31, 2012
Balance at March 31, 2012 (in Dollars per share)	$ 0.60
Balance at March 31, 2012	2,814,302
Balance at March 31, 2012	8.06
Balance at March 31, 2012 (in Dollars)	$ 1,238,293
Canceled (in Dollars per share)	$ 0.43
Canceled	(144,437)
Balance at December 31, 2012 (vested and expected to vest) (in Dollars per share)	$ 0.48
Balance at December 31, 2012 (vested and expected to vest)	2,669,865
Balance at December 31, 2012 (vested and expected to vest)	7.31
Balance at December 31, 2012 (vested and expected to vest) (in Dollars)	1,388,330
Exercisable at December 31, 2012 (in Dollars per share)	$ 0.53
Exercisable at December 31, 2012	1,442,153
Exercisable at December 31, 2012	7.40
Exercisable at December 31, 2012 (in Dollars)	$ 677,812