SUBSEQUENT EVENTS (Details) - USD ($)			1 Months Ended	4 Months Ended
	Feb. 01, 2017	Jan. 13, 2017	Jan. 31, 2017	Mar. 31, 2018
Subsequent Event
Subsequent Event [Line Items]
Shares issued in the IPO		15,525,000
Proceeds from Issuance Initial Public Offering		$ 181,100,000
Atwood Achiever | Subsequent Event
Subsequent Event [Line Items]
Proceeds from contract term adjustment, amount			$ 48,100,000
Daily operating rate, receivable, amount	$ 595,000
Scenario, Forecast | Woodside Energy Ltd.
Subsequent Event [Line Items]
Duration of contract				100 days
Mobilization fee receivable if if the option is exercised				$ 1,000,000
Mobilization fee receivable if the option is not exercised				2,000,000
Scenario, Forecast | Woodside Energy Ltd. | Atwood Osprey
Subsequent Event [Line Items]
Daily operating rate, receivable, amount				$ 190,000
Scenario, Forecast | Drilling Servicing Contracts | Woodside Energy Ltd.
Subsequent Event [Line Items]
Duration of contract				550 days
Scenario, Forecast | Drilling Servicing Contracts | Woodside Energy Ltd. | Atwood Osprey
Subsequent Event [Line Items]
Daily operating rate, receivable, amount				$ 222,295
Scenario, Forecast | Drilling Servicing Contracts | Woodside Energy Ltd. | Minimum | Atwood Condor
Subsequent Event [Line Items]
Potential reimbursement receivable, amount				34,500,000
Scenario, Forecast | Drilling Servicing Contracts | Woodside Energy Ltd. | Maximum | Atwood Condor
Subsequent Event [Line Items]
Potential reimbursement receivable, amount				$ 36,500,000