COMMITMENTS AND CONTINGENCIES (Details) $ in Millions |
Dec. 31, 2018
vessel
|
Sep. 30, 2018
USD ($)
vessel
|
|---|---|---|
| Commitments and Contingencies Disclosure [Abstract] | ||
| Number of multi-purpose service vessels being constructed | vessel | 2 | 2 |
| Estimate of possible loss | $ | $ 12.5 |
| X | ||||||||||
- Definition Construction In Progress, Number Of Multi-Purpose Service Vessels No definition available.
|
| X | ||||||||||
- References No definition available.
|
| X | ||||||||||
- Definition Reflects the estimated amount of loss from the specified contingency as of the balance sheet date. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|