Summary of Significant Accounting Policies (Details Textual)		1 Months Ended	3 Months Ended		6 Months Ended
	Apr. 03, 2017	Feb. 15, 2017	Jun. 30, 2017 USD ($) shares	Jun. 30, 2016 USD ($) shares	Jun. 30, 2017 USD ($) Partnership shares	Jun. 30, 2016 USD ($) shares
Summary of Significant Accounting Policies (Textual)
Ceiling test impairment cost | $				$ 409,000		$ 4,300,000
Number of consolidated partnerships | Partnership					46
Cost method investments, additional information					The Company has less than 20% of the voting interests of a corporate affiliate or less than a 3% to 5% interest of a partnership or limited liability company and does not have significant influence.
Equity method investment, additional information					If the Company holds between 20% and 50% of the voting interest in non-consolidated corporate affiliates or greater than a 3% to 5% interest of a partnership or limited liability company and exercises significant influence or control, the equity method of accounting is used to account for the investment.
Liability agreement reimbursed, description	The Company for (i) due diligence costs incurred on behalf of Carbon Appalachia, (ii) transaction-related costs and (iii) $75,000 for the period April 3, 2017 through June 30, 2017, in connection with its role as manager of Carbon Appalachia.	The Company for (i) due diligence costs incurred on behalf of Carbon California, (ii) transaction-related costs and (iii) $225,000 for the period February 15, 2017 through June 30, 2017, in connection with its role as manager of Carbon California. See Note 5 for additional information.
Changes in fair value of warrants | $			$ 853,000		$ 1.7
Warrant [Member]
Summary of Significant Accounting Policies (Textual)
Anti-dilutive earnings per shares					13,000
Non-vested shares of restricted stock					684,000
Restricted Stock [Member]
Summary of Significant Accounting Policies (Textual)
Anti-dilutive earnings per shares			284,000	13,000	284,000	284,000
Non-vested shares of restricted stock			620,000	246,000,000,000	620,000
Restricted Performance Units [Member]
Summary of Significant Accounting Policies (Textual)
Anti-dilutive earnings per shares			13,000	298,000		13,000
Common stock equivalent restricted to future contingencies			276,000		276,000	276,000
Nytis LLC [Member]
Summary of Significant Accounting Policies (Textual)
Percentage of ownership interest in the subsidiary					99.00%
Nytis USA [Member]
Summary of Significant Accounting Policies (Textual)
Percentage of ownership interest in the subsidiary					100.00%