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Fair Value Measurements (Details) (USD $)
 12 Months Ended
Mar. 31, 2014
Mar. 31, 2013
Mar. 31, 2012
Change in warrant liability measured at fair value recurring basis using significant unobservable inputs (Level 3) [Rollforward]      
Beginning balance $ 2,014,000 $ 0  
Newly issued 0 1,625,000 0
Total loss (gain) included in net loss 10,443,000 389,000 0
Exercises/settlements (2,410,000) [1] 0  
Net transfers in (out) of Level 3 0 0  
Ending balance 10,047,000 2,014,000 0
Forward Foreign Currency Exchange Contracts [Member]
      
Other liabilities [Abstract]      
Net (loss) gain on forward foreign currency exchange contracts (842,000) 804,000  
Warrant Liability [Member]
      
Change in warrant liability measured at fair value recurring basis using significant unobservable inputs (Level 3) [Rollforward]      
Total loss (gain) included in net loss 10,443,000 389,000  
Supplier Warrant [Member]
      
Fair value assumptions of warrants [Abstract]      
Risk free interest rate (in hundredths) 1.11%    
Expected life 3 years 6 months    
Expected volatility (in hundredths) 45.90%    
Dividend yield (in hundredths) 0.00%    
Probability of future financing (in hundredths) 0.00%    
Recurring [Member]
      
Short-Term Investments [Abstract]      
Mutual funds 521,000 411,000  
Prepaid expenses and other current assets [Abstract]      
Forward foreign currency exchange contracts 0 683,000  
Other current liabilities [Abstract]      
Deferred compensation 521,000 411,000  
Forward foreign currency exchange contracts 159,000 0  
Other liabilities [Abstract]      
Warrant liability 10,047,000 2,014,000  
Recurring [Member] | Level 1 [Member]
      
Short-Term Investments [Abstract]      
Mutual funds 521,000 411,000  
Prepaid expenses and other current assets [Abstract]      
Forward foreign currency exchange contracts 0 0  
Other current liabilities [Abstract]      
Deferred compensation 521,000 411,000  
Forward foreign currency exchange contracts 0 0  
Other liabilities [Abstract]      
Warrant liability 0 0  
Recurring [Member] | Level 2 [Member]
      
Short-Term Investments [Abstract]      
Mutual funds 0 0  
Prepaid expenses and other current assets [Abstract]      
Forward foreign currency exchange contracts 0 683,000  
Other current liabilities [Abstract]      
Deferred compensation 0 0  
Forward foreign currency exchange contracts 159,000 0  
Other liabilities [Abstract]      
Warrant liability 0 0  
Recurring [Member] | Level 3 [Member]
      
Short-Term Investments [Abstract]      
Mutual funds 0 0  
Prepaid expenses and other current assets [Abstract]      
Forward foreign currency exchange contracts 0 0  
Other current liabilities [Abstract]      
Deferred compensation 0 0  
Forward foreign currency exchange contracts 0 0  
Other liabilities [Abstract]      
Warrant liability $ 10,047,000 $ 2,014,000  
[1] Represents the fair value of the Cerberus Warrant as of the settlement date (see Note 10).