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Fair Value Measurements (Details) - USD ($) | 3 Months Ended | 6 Months Ended |
--- | --- | --- | ---
Sep. 30, 2017 | Sep. 30, 2016 | Sep. 30, 2017 | Sep. 30, 2016 | Mar. 31, 2017
Forward Foreign Currency Exchange Contracts [Member] |  |  |  |  |  |
Other liabilities [Abstract] |  |  |  |  |  |
Net gain (loss) on forward foreign currency exchange contracts |  | $ (330,000) | $ (507,000) | $ 722,000 | $ (1,186,000) |
Supplier Warrant [Member] |  |  |  |  |  |
Change in warrant liability measured at fair value recurring basis using significant unobservable inputs (Level 3) [Roll Forward] |  |  |  |  |  |
Beginning balance |  | 10,586,000 | 10,054,000 | 11,879,000 | 15,643,000 |
Newly issued |  | 0 | 0 | 0 | 0 |
Total (gain) loss included in net income (loss) |  | (1,020,000) | 824,000 | (2,313,000) | (4,765,000) |
Exercises/settlements | [1] | (9,566,000) | 0 | (9,566,000) | 0 |
Net transfers in (out) of Level 3 |  | 0 | 0 | 0 | 0 |
Ending balance |  | 0 | 10,878,000 | 0 | 10,878,000 |
Contingent Consideration [Member] |  |  |  |  |  |
Change in warrant liability measured at fair value recurring basis using significant unobservable inputs (Level 3) [Roll Forward] |  |  |  |  |  |
Beginning balance |  | 0 | 314,000 | 0 | 330,000 |
Newly issued |  | 0 | 0 | 0 | 0 |
Total (gain) loss included in net income (loss) |  | 0 | 0 | 0 | (16,000) |
Exercises/settlements | [1] | 0 | (314,000) | 0 | (314,000) |
Net transfers in (out) of Level 3 |  | 0 | 0 | 0 | 0 |
Ending balance |  | 0 | $ 0 | 0 | $ 0 |
Recurring [Member] |  |  |  |  |  |
Short-term investments [Abstract] |  |  |  |  |  |
Mutual funds |  | 2,568,000 |  | 2,568,000 |  | $ 2,140,000
Prepaid expenses and other current assets [Abstract] |  |  |  |  |  |
Forward foreign currency exchange contracts |  | 1,149,000 |  | 1,149,000 |  | 427,000
Other current liabilities [Abstract] |  |  |  |  |  |
Deferred compensation |  | 2,568,000 |  | 2,568,000 |  | 2,140,000
Other liabilities [Abstract] |  |  |  |  |  |
Warrant liability |  | 0 |  | 0 |  | 11,879,000
Recurring [Member] | Level 1 [Member] |  |  |  |  |  |
Short-term investments [Abstract] |  |  |  |  |  |
Mutual funds |  | 2,568,000 |  | 2,568,000 |  | 2,140,000
Prepaid expenses and other current assets [Abstract] |  |  |  |  |  |
Forward foreign currency exchange contracts |  | 0 |  | 0 |  | 0
Other current liabilities [Abstract] |  |  |  |  |  |
Deferred compensation |  | 2,568,000 |  | 2,568,000 |  | 2,140,000
Other liabilities [Abstract] |  |  |  |  |  |
Warrant liability |  | 0 |  | 0 |  | 0
Recurring [Member] | Level 2 [Member] |  |  |  |  |  |
Short-term investments [Abstract] |  |  |  |  |  |
Mutual funds |  | 0 |  | 0 |  | 0
Prepaid expenses and other current assets [Abstract] |  |  |  |  |  |
Forward foreign currency exchange contracts |  | 1,149,000 |  | 1,149,000 |  | 427,000
Other current liabilities [Abstract] |  |  |  |  |  |
Deferred compensation |  | 0 |  | 0 |  | 0
Other liabilities [Abstract] |  |  |  |  |  |
Warrant liability |  | 0 |  | 0 |  | 0
Recurring [Member] | Level 3 [Member] |  |  |  |  |  |
Short-term investments [Abstract] |  |  |  |  |  |
Mutual funds |  | 0 |  | 0 |  | 0
Prepaid expenses and other current assets [Abstract] |  |  |  |  |  |
Forward foreign currency exchange contracts |  | 0 |  | 0 |  | 0
Other current liabilities [Abstract] |  |  |  |  |  |
Deferred compensation |  | 0 |  | 0 |  | 0
Other liabilities [Abstract] |  |  |  |  |  |
Warrant liability |  | $ 0 |  | $ 0 |  | $ 11,879,000
[1] | Represents the fair value of the Supplier Warrant as of the exercise date (see Note 8).

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- Definition This element represents the portion of the balance sheet assertion valued at fair value by the entity whether such amount is presented as a separate caption or as a parenthetical disclosure. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. The element may be used in both the balance sheet and disclosure in the same submission. This item represents the amount of warrant liability as of the balance sheet date. + References No definition available. + Details
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