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Commitments and Contingencies (Details) - USD ($) | 12 Months Ended
--- | ---
Mar. 31, 2016 | Mar. 31, 2015 | Mar. 31, 2014
Remaining future minimum rental payments under operating leases [Abstract] |  |  |
2017 | $ 3,448,000 |  |
2018 | 1,767,000 |  |
2019 | 1,587,000 |  |
2020 | 1,296,000 |  |
2021 | 1,329,000 |  |
Thereafter | 1,348,000 |  |
Total minimum lease payments | 10,775,000 |  |
Total operating lease expenses | $ 3,263,000 | $ 3,030,000 | $ 2,928,000
Commitments to Provide Marketing Allowances under Long-Term Customer Contracts [Abstract] |  |  |
Term of long-term agreements with major customer | 4 years |  |
Breakout of allowances recorded as reduction to revenues [Abstract] |  |  |
Allowances incurred under long-term customer contracts | $ 29,845,000 | 18,358,000 | 16,099,000
Allowances related to a single exchange of product | 47,451,000 | 36,112,000 | 30,948,000
Allowances related to core inventory purchase obligations | 2,268,000 | 15,540,000 | 2,506,000
Total customer allowances recorded as a reduction of revenues | 79,564,000 | $ 70,010,000 | $ 49,553,000
Marketing Allowances and Customer Remanufactured Core Purchase Obligation [Abstract] |  |  |
2017 | 48,754,000 |  |
2018 | 14,311,000 |  |
2019 | 2,442,000 |  |
2020 | 1,345,000 |  |
2021 | 1,341,000 |  |
Total marketing allowances | $ 68,193,000 |  |

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- Definition Period covered by the long-term supplier commitment, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References No definition available. + Details
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- Definition Minimum amount of marketing allowances and customer Remanufactured Core purchase arrangement maturing in the fourth fiscal year following the latest fiscal year. + References No definition available. + Details
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