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COMMITMENTS AND CONTINGENCIES (Details) - US Customs Notice of Action - Unfavorable Regulatory Action - USD ($) $ in Thousands |  |  |  | 1 Months Ended | 3 Months Ended |  |  |
--- | --- | --- | --- | --- | --- | --- | --- | ---
Oct. 11, 2018 | Mar. 06, 2017 | Feb. 16, 2017 | Aug. 31, 2015 | Jun. 30, 2019 | Sep. 30, 2018 | Mar. 31, 2018 | Dec. 27, 2016 | Jul. 31, 2015
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |  |
Requested payment of AD/CVD cash deposits |  |  | $ 14,783 |  |  |  |  | $ 3,049 |
AD/CVD cash deposits to be remitted or bond posted |  |  | $ 3,049 |  |  |  |  |  |
Amount tendered into a suspense account |  | $ 3,049 |  |  |  |  |  |  |
Loss contingency reserve |  |  |  |  |  |  | $ 3,103 |  |
Loss contingency, amount mitigated | $ 8,000 |  |  |  | $ 8,000 |  |  |  |
Addition to reserve |  |  |  |  |  | $ 4,897 |  |  |
Threatened Litigation |  |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |  |
Requested payment of AD/CVD cash deposits |  |  |  |  |  |  |  |  | $ 1,100
AD/CVD cash deposits to be remitted or bond posted |  |  |  | $ 1,100 |  |  |  |  |

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