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REVENUE - Contract Assets (Details) $ in Thousands | 12 Months Ended
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Dec. 31, 2018 USD ($)
Increase (decrease) contract assets |
Outstanding at the end of year | $ 6,431
Revenue under contract manufacturing agreements (as percentage) | 91.00%
Remaining performance obligations customers upon shipment with payment terms | 120 days
ASU 2014-09 |
Increase (decrease) contract assets |
Outstanding at the beginning of year | $ 6,459
Transferred to receivables from contract assets recognized | (5,932)
Product transferred over time | 5,904
Outstanding at the end of year | $ 6,431

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