Fair Value Measurements (Details) - USD ($)	3 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Mar. 31, 2016
Forward Foreign Currency Exchange Contracts [Member]
Other liabilities [Abstract]
Net gain (loss) on forward foreign currency exchange contracts	$ (679,000)	$ 178,000
Supplier Warrant [Member]
Fair value assumptions of warrants [Abstract]
Risk free interest rate	0.50%
Expected life in years	1 year 3 months
Expected volatility	36.10%
Dividend yield	0.00%
Probability of future financing	0.00%
Change in warrant liability measured at fair value recurring basis using significant unobservable inputs (Level 3) [Rollforward]
Beginning balance	$ 15,643,000	10,506,000
Newly issued	0	0
Total (gain) loss included in net income	(5,589,000)	1,142,000
Exercises/settlements	0	0
Net transfers in (out) of Level 3	0	0
Ending balance	10,054,000	11,648,000
Contingent Consideration [Member]
Change in warrant liability measured at fair value recurring basis using significant unobservable inputs (Level 3) [Rollforward]
Beginning balance	330,000	0
Newly issued	0	1,320,000
Total (gain) loss included in net income	(16,000)	0
Exercises/settlements	0	0
Net transfers in (out) of Level 3	0	0
Ending balance	314,000	$ 1,320,000
Recurring [Member]
Short-term investments [Abstract]
Mutual funds	1,982,000		$ 1,813,000
Accrued liabilities [Abstract]
Contingent consideration	314,000		224,000
Other current liabilities [Abstract]
Deferred compensation	1,982,000		1,813,000
Forward foreign currency exchange contracts	1,095,000		416,000
Other liabilities [Abstract]
Warrant liability	10,054,000		15,643,000
Contingent consideration	0		106,000
Recurring [Member] | Level 1 [Member]
Short-term investments [Abstract]
Mutual funds	1,982,000		1,813,000
Accrued liabilities [Abstract]
Contingent consideration	0		0
Other current liabilities [Abstract]
Deferred compensation	1,982,000		1,813,000
Forward foreign currency exchange contracts	0		0
Other liabilities [Abstract]
Warrant liability	0		0
Contingent consideration	0		0
Recurring [Member] | Level 2 [Member]
Short-term investments [Abstract]
Mutual funds	0		0
Accrued liabilities [Abstract]
Contingent consideration	0		0
Other current liabilities [Abstract]
Deferred compensation	0		0
Forward foreign currency exchange contracts	1,095,000		416,000
Other liabilities [Abstract]
Warrant liability	0		0
Contingent consideration	0		0
Recurring [Member] | Level 3 [Member]
Short-term investments [Abstract]
Mutual funds	0		0
Accrued liabilities [Abstract]
Contingent consideration	314,000		224,000
Other current liabilities [Abstract]
Deferred compensation	0		0
Forward foreign currency exchange contracts	0		0
Other liabilities [Abstract]
Warrant liability	10,054,000		15,643,000
Contingent consideration	$ 0		$ 106,000