Subsequent Events - Additional Information (Details)					5 Months Ended	6 Months Ended
	Dec. 31, 2016 USD ($)	Aug. 15, 2016 USD ($) shares	Aug. 04, 2016 USD ($)	Aug. 02, 2016 USD ($) a $ / shares shares	Dec. 31, 2016 USD ($) Director	Jun. 30, 2016 USD ($)	Jun. 30, 2015 USD ($)
Subsequent Event [Line Items]
Registration rights agreement date						Aug. 02, 2016
Total purchase price paid						$ 2,717,000	$ 3,470,000
Scenario Forecast
Subsequent Event [Line Items]
No of director | Director					1
Scenario Forecast | Leucadia
Subsequent Event [Line Items]
Equity offering cost					$ 1,000,000
Maximum | Scenario Forecast
Subsequent Event [Line Items]
Percentage of shares purchased in the offering					50.00%
Maximum | Scenario Forecast | Leucadia
Subsequent Event [Line Items]
Commitment amount	$ 20,000,000
Equity offering threshold amount of long-term debt	295,000,000
Minimum | Scenario Forecast | Leucadia
Subsequent Event [Line Items]
Minimum aggregate offering price of equity securities excluding commitment amount	$ 40,000,000
Subsequent Event
Subsequent Event [Line Items]
Debt instrument interest rate		8.75%
Warrants to purchase common stock | shares		500,000
Registration rights agreement description				The Successor has agreed to file a registration statement providing for resale of the Registrable Securities as permitted by Rule 415 of the Securities Act of 1933, as amended (the “Securities Act”) no later than the earlier of (i) the one year anniversary of the consummation of the Offering (as defined below) and (ii) 30 days after the date the Successor first becomes eligible to file a registration statement on Form S-3. The Successor has also agreed, subject to certain limitations, to allow the Holders to sell Registrable Securities in connection with certain registered offerings that the Successor may conduct in the future and to provide holders of a specified number of Registrable Securities the right to demand that the Successor conduct an underwritten public offering of Registrable Securities under certain circumstances. The Registration Rights Agreement contains representations, warranties, covenants and indemnities that are customary for private placements by public companies.
Subsequent Event | Juneau Energy, LLC
Subsequent Event [Line Items]
Purchase and sale agreement date				Aug. 02, 2016
Net mineral acres | a				1,300
Total purchase price paid				$ 5,500,000
Subsequent Event | Juneau Energy, LLC | Common Class A
Subsequent Event [Line Items]
Shares of common stock payable in total purchase | shares				500,227
Second Lien Notes | Subsequent Event
Subsequent Event [Line Items]
Debt instrument face amount		$ 25,000,000
Proceeds from issuance of notes		$ 48,414,000
Securities Purchase Agreement
Subsequent Event [Line Items]
Debt instrument maturity date						Aug. 04, 2016
Securities Purchase Agreement | Subsequent Event
Subsequent Event [Line Items]
Aggregate principal of securities			$ 10,000,000
Securities Purchase Agreement | 12% Senior Secured Second Lien Notes Due 2021
Subsequent Event [Line Items]
Sale of stock, description of transaction						(i) up to $49,900,000 aggregate principal amount of LRAI’s 12% senior secured second lien notes due 2021 (the “Second Lien Notes”) and (ii) five-year warrants to purchase up to an aggregate 998,000 shares of the Successor’s common stock at a price equal to $5.00 per share (the “Warrants” and, together with the Notes, the “Securities”).
Securities Purchase Agreement | 12% Senior Secured Second Lien Notes Due 2021 | Subsequent Event
Subsequent Event [Line Items]
Debt instrument interest rate				12.00%
Common stock price per share | $ / shares				$ 5.00
Securities Purchase Agreement | 12% Senior Secured Second Lien Notes Due 2021 | Subsequent Event | Maximum
Subsequent Event [Line Items]
Debt instrument face amount				$ 49,900,000
Number of common shares issued | shares				998,000