Fair Value Measurements (Details) - USD ($)	3 Months Ended		6 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014	Mar. 31, 2015
Change in warrant liability measured at fair value recurring basis using significant unobservable inputs (Level 3) [Rollforward]
Total (gain) loss included in net loss			$ 1,762,000	$ 275,000
Forward Foreign Currency Exchange Contracts [Member]
Other liabilities [Abstract]
Net loss on forward foreign currency exchange contracts	$ (527,000)	$ (361,000)	$ (349,000)	(128,000)
Supplier Warrant [Member]
Fair value assumptions of warrants [Abstract]
Risk-free interest rate			0.64%
Expected life in years			2 years
Expected volatility			44.50%
Dividend yield			0.00%
Probability			0.00%
Change in warrant liability measured at fair value recurring basis using significant unobservable inputs (Level 3) [Rollforward]
Beginning balance	11,648,000	8,933,000	$ 10,506,000	10,047,000
Newly issued	0	0	0	0
Total (gain) loss included in net loss	600,000	1,389,000	1,742,000	275,000
Exercises/settlements	0	0	0	0
Net transfers in (out) of Level 3	0	0	0	0
Ending balance	12,248,000	10,322,000	$ 12,248,000	10,322,000
Contingent Consideration [Member]
Fair value assumptions of warrants [Abstract]
Expected volatility			35.00%
Probability			90.00%
Counter party present value factor			5.62%
Change in warrant liability measured at fair value recurring basis using significant unobservable inputs (Level 3) [Rollforward]
Beginning balance	1,320,000	0	$ 0	0
Newly issued	0	0	1,320,000	0
Total (gain) loss included in net loss	20,000	0	20,000	0
Exercises/settlements	0	0	0	0
Net transfers in (out) of Level 3	0	0	0	0
Ending balance	1,340,000	$ 0	$ 1,340,000	$ 0
Contingent Consideration [Member] | Minimum [Member]
Fair value assumptions of warrants [Abstract]
Risk-free interest rate			0.23%
Contingent Consideration [Member] | Maximum [Member]
Fair value assumptions of warrants [Abstract]
Risk-free interest rate			1.28%
Recurring [Member]
Short-term investments [Abstract]
Mutual funds	1,339,000		$ 1,339,000		$ 699,000
Accrued liabilities [Abstract]
Contingent consideration	398,000		398,000		0
Other current liabilities [Abstract]
Deferred compensation	1,339,000		1,339,000		699,000
Forward foreign currency exchange contracts	1,542,000		1,542,000		1,193,000
Other liabilities [Abstract]
Warrant liability	12,248,000		12,248,000		10,506,000
Contingent consideration	942,000		942,000		0
Recurring [Member] | Level 1 [Member]
Short-term investments [Abstract]
Mutual funds	1,339,000		1,339,000		699,000
Accrued liabilities [Abstract]
Contingent consideration	0		0		0
Other current liabilities [Abstract]
Deferred compensation	1,339,000		1,339,000		699,000
Forward foreign currency exchange contracts	0		0		0
Other liabilities [Abstract]
Warrant liability	0		0		0
Contingent consideration	0		0		0
Recurring [Member] | Level 2 [Member]
Short-term investments [Abstract]
Mutual funds	0		0		0
Accrued liabilities [Abstract]
Contingent consideration	0		0		0
Other current liabilities [Abstract]
Deferred compensation	0		0		0
Forward foreign currency exchange contracts	1,542,000		1,542,000		1,193,000
Other liabilities [Abstract]
Warrant liability	0		0		0
Contingent consideration	0		0		0
Recurring [Member] | Level 3 [Member]
Short-term investments [Abstract]
Mutual funds	0		0		0
Accrued liabilities [Abstract]
Contingent consideration	398,000		398,000		0
Other current liabilities [Abstract]
Deferred compensation	0		0		0
Forward foreign currency exchange contracts	0		0		0
Other liabilities [Abstract]
Warrant liability	12,248,000		12,248,000		10,506,000
Contingent consideration	$ 942,000		$ 942,000		$ 0