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COMMITMENTS AND CONTINGENCIES (Fair Value Supply Agreement) (Details) - Commitments - Level 3 - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2018 | Dec. 31, 2017
Accrued Expenses And Other Current Liabilities | Supply Agreement Liability, Short-term |  |
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |  |
Balance, Beginning of Period | $ 0 | $ 166
Payments | 0 | (166)
Transfer |  | 0
Transfer to accounts payable | 0 |
Balance, End of Period | 0 | 0
Accrued Expenses And Other Current Liabilities | Supply Agreement Liability, Short-term | Selling, general and administrative |  |
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |  |
(Gain)/loss from change in fair value | 0 | 0
Accrued Expenses And Other Current Liabilities | Above Market Supply Agreement Liability, Short-term |  |
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |  |
Balance, Beginning of Period | 2,641 | 0
Payments | (1,817) | (113)
Transfer |  | 3,273
Transfer to accounts payable | (159) |
Balance, End of Period | 195 | 2,641
Accrued Expenses And Other Current Liabilities | Above Market Supply Agreement Liability, Short-term | Selling, general and administrative |  |
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |  |
(Gain)/loss from change in fair value | (470) | (519)
Other Noncurrent Liabilities | Supply Agreement Liability, Long-term |  |
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |  |
Balance, Beginning of Period | 0 | 0
Payments | 0 | 0
Transfer |  | 0
Transfer to accounts payable | 0 |
Balance, End of Period | 0 | 0
Other Noncurrent Liabilities | Supply Agreement Liability, Long-term | Selling, general and administrative |  |
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |  |
(Gain)/loss from change in fair value | 0 | 0
Other Noncurrent Liabilities | Above Market Supply Agreement Liability, Long-term |  |
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |  |
Balance, Beginning of Period | 0 | 2,648
Payments | 0 | (415)
Transfer |  | (3,273)
Transfer to accounts payable | 0 |
Balance, End of Period | 0 | 0
Other Noncurrent Liabilities | Above Market Supply Agreement Liability, Long-term | Selling, general and administrative |  |
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |  |
(Gain)/loss from change in fair value | $ 0 | $ 1,040

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- Definition Amount of gain (loss) recognized on the income statement for financial instrument classified as a liability measured using unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1) -URI http://asc.fasb.org/extlink&oid=99377789&loc=d3e19207-110258 + Details
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