Undivided interest acquired in producing wells.

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Represents the expense recognized during the period arising from equity-based compensation arrangements (for example, shares of stock, unit, stock options or other equity instruments) with employees, directors and certain consultants qualifying for treatment as employees.

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Date when the business acquisition agreement was executed, in CCYY-MM-DD format.

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- Definition

Number of shares of equity interests issued or issuable to acquire entity.

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- Definition

Amount of paid and unpaid common stock dividends declared with the form of settlement in cash.

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Unrecognized cost of unvested options awarded to employees as compensation.

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Weighted average expected volatility of stock price.

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Fractional interest owned based on working interests or other economic arrangements of area spaced or assigned to productive wells.

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The cash outflow to purchase of mineral interests in oil and gas properties for use in the normal oil and gas operations and not intended for resale.

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The cash inflow from the additional capital contribution to the entity.

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The total number of producing oil wells and oil wells capable of production, in which the entity owns a fractional working interest.

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Period which an employee's right to exercise an award is no longer contingent on satisfaction of either a service condition, market condition or a performance condition, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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Period from grant date that an equity-based award expires, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Weighted average remaining contractual term for option awards outstanding, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Per share or per unit amount of equity securities issued.

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No definition available.

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Number of shares issued in lieu of cash for services contributed to the entity. Number of shares includes, but is not limited to, shares issued for services contributed by vendors and founders.

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No definition available.

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Number of new stock issued during the period.

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Number of share options (or share units) exercised during the current period.

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Stockholders' Equity and Stock Based Compensation - Additional Information (Details)				1 Months Ended	7 Months Ended	12 Months Ended
	Dec. 22, 2016 USD ($) $ / shares shares	Sep. 26, 2016	Aug. 02, 2016 USD ($) a Well shares	Jul. 31, 2016 shares	Jul. 05, 2016 USD ($)	Dec. 31, 2016 USD ($) shares	Dec. 31, 2015 USD ($)
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Proceeds from issuance of common stock, net of offering costs						$ 72,807,000
Purchase and sale agreement date		Sep. 26, 2016
Total consideration paid						$ 4,340,000	$ 8,723,000
Expected life of stock options issued						3 years 6 months
Stock options vesting periods						3 years
Stock options grant expirations periods						4 years
Stock options exercised \| shares						0
Compensation expenses for stock options granted using fair-value method						$ 448,000	$ 2,585,000
Unrecognized compensation cost related to stock options						$ 0
Predecessor
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Weighted average volatility rate of common share price					58.60%
Cash dividend on common shares					$ 0
Juneau Energy, LLC \| Brazos County
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Purchase and sale agreement date			Aug. 02, 2016
Undivided interest acquired in producing wells			50.00%
Productive Oil Wells, Number of Wells \| Well			2
Net mineral acres \| a			1,300
Total consideration paid			$ 5,500,000
Common Class A
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Common stock shares issued \| shares	13,800,000
Common Class A \| Juneau Energy, LLC \| Brazos County
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Shares of common stock payable in total purchase \| shares			500,227
Class B Non-Voting Common Stock
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Common stock, shares issued \| shares				2,500
2016 Common Stock Offering \| Common Class A
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Common stock shares issued \| shares	13,800,000
Shares issued, price per share \| $ / shares	$ 5.75
Proceeds from issuance of common stock, net of offering costs	$ 71,800,000