REVENUE FROM CONTRACTS WITH CUSTOMERS Narrative (Details) - USD ($) $ in Thousands |
3 Months Ended | 9 Months Ended | 12 Months Ended | 15 Months Ended | |
|---|---|---|---|---|---|
Jun. 30, 2018 |
Sep. 30, 2018 |
Dec. 31, 2019 |
Dec. 31, 2018 |
Dec. 31, 2019 |
|
| Revenue recognized | $ 77,466 | $ 57,826 | |||
| Additions to contract liability | $ 52,957 | $ 83,243 | |||
| Revenue recognized due to change in contract liability | $ 9,000 | ||||
| Unnamed Customer [Member] | |||||
| Revenue recognized | $ 37,500 | ||||
| Additions to contract liability | $ 37,500 | ||||