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Amount of write-down of assets recognized in the income statement. Includes, but is not limited to, losses from tangible assets, intangible assets and goodwill.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 360
-SubTopic 10
-Section 45
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Costs incurred, including capitalized costs and costs charged to expense, associated with the acquisition of oil and gas properties that have proved reserves.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 932
-SubTopic 235
-Section 50
-Paragraph 18
-Subparagraph (a)
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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.

+ References

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))
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- Definition

The cash inflow to dispose of long-lived, physical assets and mineral interests in oil and gas properties used for normal oil and gas operations.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
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OIL AND NATURAL GAS PROPERTIES (Details) - USD ($) $ in Thousands	1 Months Ended	3 Months Ended
	Oct. 31, 2017	Dec. 31, 2018	Dec. 31, 2017	Sep. 30, 2018
Oil and Natural Gas Properties [Line Items]
Proceeds from sale of oil and natural gas assets		$ 633	$ 35
Income taxes receivable		1,503		$ 2,461
Impairment of assets		2,170	0
Pouce Coupe
Oil and Natural Gas Properties [Line Items]
Proceeds from sale of oil and natural gas assets	$ 72
Income taxes receivable			$ 37
Wood River and Twining
Oil and Natural Gas Properties [Line Items]
Acquisition costs		$ 355