Carrying amount due within one year of the balance sheet date (or one operating cycle, if longer) from tax authorities as of the balance sheet date representing refunds of overpayments or recoveries based on agreed-upon resolutions of disputes.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-03.5(c))
-URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.3(a)(4))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-03.10)
-URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878

Name:	us-gaap_IncomeTaxesReceivable
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

OIL AND NATURAL GAS PROPERTIES (Details) - USD ($) $ in Thousands	1 Months Ended		3 Months Ended
	Feb. 28, 2018	Oct. 31, 2017	Dec. 31, 2017	Dec. 31, 2016	Sep. 30, 2017
Oil and Natural Gas Properties [Line Items]
Proceeds from sale of oil and natural gas assets			$ 35
Income taxes receivable			1,295		$ 1,145
Pouce Coupe [Member]
Oil and Natural Gas Properties [Line Items]
Proceeds from sale of oil and natural gas assets		$ 72
Income taxes receivable			$ 37
Subsequent Event [Member] \| Red Earth [Member]
Oil and Natural Gas Properties [Line Items]
Proceeds from sale of oil and natural gas assets	$ 1,360