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Basis of Presentation (Details) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended |
--- | --- | --- | ---
Sep. 30, 2018 | Oct. 01, 2017 | Sep. 30, 2018 | Oct. 01, 2017 | Mar. 31, 2018
Revenue from External Customer [Line Items] |  |  |  |  |
Revenue | $ 660,462 | $ 617,289 | $ 1,331,392 | $ 1,239,914 |
Typical payment terms |  |  | 30 days |  |
Current contract liability | 9,518 |  | $ 9,518 |  | $ 9,387
Noncurrent contract liability | 7,009 |  | 7,009 |  | 7,094
Unbilled contracts receivable | 22,805 |  | 22,805 |  | $ 24,810
Revenue recognized | 661 |  | 2,597 |  |
Right of return asset related to value of inventory | 2,647 |  | 2,647 |  |
Refund liability | 5,013 |  | 5,013 |  |
Cost of goods sold | 499,582 | 457,041 | 1,004,652 | 916,208 |
Other (income) expense, net | (1,325) | 2,756 | (997) | 6,028 |
ASU No. 2017-07 |  |  |  |  |
Revenue from External Customer [Line Items] |  |  |  |  |
Cost of goods sold | (284) | (374) | (607) | (735) |
Other (income) expense, net | 284 | $ 374 | 607 | $ 735 |
Transferred over Time |  |  |  |  |
Revenue from External Customer [Line Items] |  |  |  |  |
Revenue | 16,491 |  | 34,895 |  |
Service Revenue |  |  |  |  |
Revenue from External Customer [Line Items] |  |  |  |  |
Revenue | $ 37,105 |  | $ 69,200 |  |

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