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COMMITMENTS AND CONTINGENCIES (Details) - USD ($) | 1 Months Ended | 6 Months Ended | 12 Months Ended
--- | --- | --- | ---
Feb. 28, 2017 | Jul. 31, 2016 | Apr. 30, 2013 | Sep. 30, 2017 | Apr. 01, 2017
Product Recall |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |
Damages claimed |  |  |  |  | $ 14,200,000
Loss in period |  |  |  |  | 7,100,000
Product Recall | Minimum |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |
Estimate of possible loss |  |  |  |  | 3,400,000
Product Recall | Maximum |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |
Estimate of possible loss |  |  |  |  | 14,200,000
Product Recall | Customer Returns and Inventory Reserves [Member] |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |
Loss in period |  |  |  |  | 3,700,000
Product Recall | Customer Claims [Member] |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |
Loss in period |  |  |  |  | $ 3,400,000
Insurance settlements receivable |  |  |  | $ 2,900,000 |
Contract Termination [Member] |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |
Damages claimed | $ 4,600,000 |  |  |  |
Estimate of possible loss |  |  |  | 2,800,000 |
Performance Guarantee [Member] |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |
Damages claimed | 2,800,000 |  |  |  |
Up-front Payment Arrangement [Member] |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |
Damages claimed | $ 1,800,000 |  |  |  |
Italian Employment Litigation [Member] |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |
Damages claimed |  |  |  | 4,800,000 |
Estimate of possible loss |  |  |  | 800,000 |
Loss in period |  |  |  | 400,000 |
Amount accrued |  |  |  | 800,000 |
SOLX Arbitration [Member] |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |
Damages claimed |  | $ 17,000,000 |  |  |
Amount accrued |  |  |  | $ 400,000.0 |
Payments under previous acquisition |  |  | $ 24,000,000 |  |
Contingent milestone payment |  |  | 3,000,000 |  |
Maximum future royalty payments |  |  | $ 14,000,000 |  |
Royalty Term |  |  | 10 years |  |

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