Fair Value Measurements (Details) (USD $)	3 Months Ended		9 Months Ended		3 Months Ended		9 Months Ended		3 Months Ended	9 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2012 Forward Foreign Currency Exchange Contracts [Member]	Dec. 31, 2011 Forward Foreign Currency Exchange Contracts [Member]	Dec. 31, 2012 Forward Foreign Currency Exchange Contracts [Member]	Dec. 31, 2011 Forward Foreign Currency Exchange Contracts [Member]	Dec. 31, 2012 Warrant Liability [Member]	Dec. 31, 2012 Warrant Liability [Member]	Dec. 31, 2012 Supplier Warrant [Member]	Dec. 31, 2012 Cerberus Warrant [Member]	Dec. 31, 2012 Fair Value, Measurements, Recurring [Member]	Mar. 31, 2012 Fair Value, Measurements, Recurring [Member]	Dec. 31, 2012 Fair Value, Measurements, Recurring [Member] Level 1 [Member]	Mar. 31, 2012 Fair Value, Measurements, Recurring [Member] Level 1 [Member]	Dec. 31, 2012 Fair Value, Measurements, Recurring [Member] Level 2 [Member]	Mar. 31, 2012 Fair Value, Measurements, Recurring [Member] Level 2 [Member]	Dec. 31, 2012 Fair Value, Measurements, Recurring [Member] Level 3 [Member]	Mar. 31, 2012 Fair Value, Measurements, Recurring [Member] Level 3 [Member]
Short-term Investments [Abstract]
Mutual funds													$ 383,000	$ 342,000	$ 383,000	$ 342,000	$ 0	$ 0	$ 0	$ 0
Prepaid expenses and other current assets [Abstract]
Forward foreign currency exchange contracts													239,000	0	0	0	239,000	0	0	0
Other current liabilities [Abstract]
Deferred compensation													383,000	342,000	383,000	342,000	0	0	0	0
Forward foreign currency exchange contracts													0	121,000	0	0	0	121,000	0	0
Other liabilities [Abstract]
Warrant liability													2,450,000	0	0	0	0	0	2,450,000	0
Net gain (loss) on forward foreign currency exchange contracts					20,000	488,000	360,000	(1,399,000)
Fair value assumptions of warrants [Abstract]
Risk free interest rate (in hundredths)											0.68%	0.63%
Expected life											4 years 9 months	4 years 4 months 24 days
Expected volatility (in hundredths)											55.20%	54.85%
Dividend yield (in hundredths)											0.00%	0.00%
Probability of future financing (in hundredths)											0.00%	0.00%
Change in warrant liability measured at fair value recurring basis using significant unobservable inputs (Level 3) [Rollforward]
Beginning balance	1,568,000	0	0	0
Newly issued	0	0	1,625,000	0
Total (gain) loss included in net loss (gain)	882,000	0	825,000	0					882,000	825,000
Warrants exercised	0	0	0	0
Net transfers in (out) of Level 3	0	0	0	0
Ending balance	$ 2,450,000	$ 0	$ 2,450,000	$ 0