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Contract Liabilities (Details) - USD ($) | Jun. 30, 2019 | Mar. 31, 2019
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Short-term contract liabilities [Abstract] |  |
Customer allowances earned | $ 15,698,000 | $ 12,755,000
Customer core returns accruals | 3,958,000 | 3,933,000
Customer deposits | 1,839,000 | 2,674,000
Accrued core payment, net | 9,147,000 | 11,237,000
Total short-term contract liabilities | 30,642,000 | 30,599,000
Long-term contract liabilities [Abstract] |  |
Customer core returns accruals | 25,643,000 | 25,722,000
Accrued core payment, net | 13,516,000 | 15,167,000
Total long-term contract liabilities | 39,159,000 | 40,889,000
Total contract liabilities | $ 69,801,000 | $ 71,488,000

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