COMMITMENTS AND CONTINGENCIES - Additional Information (Details)		3 Months Ended	12 Months Ended			21 Months Ended
	Sep. 12, 2016	Mar. 31, 2017 USD ($)	Dec. 31, 2016 USD ($) MBbls	Dec. 31, 2015 USD ($)	Dec. 31, 2014 USD ($)	Dec. 31, 2018 USD ($)	Mar. 21, 2016 USD ($)
Loss Contingencies [Line Items]
Payments related to lease obligations			$ 676,000	$ 2,076,000	$ 966,000
Commitments to use drilling rigs and acquisition of seismic data, value			$ 28,030,000
Commitments to use drilling rigs and acquisition of seismic data, period			2 years
Minimum barrels of oil spill to impose financial responsibility under Oil Pollution Act | MBbls			1,000
Minimum financial responsibility oil spill in specified state waters			$ 10,000,000
Minimum financial responsibility oil spill in continental shelf waters			35,000,000
Maximum financial responsibility in amounts if oil spill			150,000,000
Minimum
Loss Contingencies [Line Items]
Potential contingency loss			75,000,000
Maximum
Loss Contingencies [Line Items]
Potential contingency loss			133,650,000
Bureau of Ocean Energy Management
Loss Contingencies [Line Items]
Bonding requirement, amount							$ 565,000,000
Contingent liability to surety insurance company			$ 117,686,000
Percentage of maximum net worth allowed for self insurance	10.00%
Period for accepting the plan terms	10 days
Period to provide security for sole-liability properties	60 days
Period to provide additional security for other properties	120 days
Bureau of Ocean Energy Management | Forecast | Minimum
Loss Contingencies [Line Items]
Additional incremental bonding requirement, amount		$ 7,000,000				$ 30,000,000
Bureau of Ocean Energy Management | Forecast | Maximum
Loss Contingencies [Line Items]
Additional incremental bonding requirement, amount		$ 10,000,000				$ 60,000,000