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Equity Investments (Narrative) (Details) $ / shares in Units, a in Thousands, $ in Thousands | 1 Months Ended | 3 Months Ended | 12 Months Ended |  |
--- | --- | --- | --- | --- | ---
Oct. 31, 2016 USD ($) $ / shares shares | Mar. 31, 2017 USD ($) a | Mar. 31, 2016 USD ($) | Dec. 31, 2014 entity | Sep. 30, 2014 a | Dec. 31, 2014 USD ($) | Feb. 29, 2016 | Feb. 01, 2016 USD ($)
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |  |  |
(Income) loss from equity method investments |  | $ 4,907 | $ 30,737 |  |  |  |  |
Distributions from equity method investments |  | 631 | 138 |  |  |  |  |
Payments for equity method investments |  | $ 10,673 | 1,821 |  |  |  |  |
IPO | Common Stock | Mammoth Energy Partners LP |  |  |  |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |  |  |
Number of shares sold by Mammoth Energy (in shares) | shares | 7,750,000 |  |  |  |  |  |  |
Shares issued, price per share (in dollars per share) | $ / shares | $ 15.00 |  |  |  |  |  |  |
Mammoth Energy Partners LP | IPO | Common Stock |  |  |  |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |  |  |
Equity method investment (in shares) | shares | 76,250 |  |  |  |  |  |  |
Proceeds from sale of equity | $ 1,100 |  |  |  |  |  |  |
APICO, LLP | Tatex Thailand II, LLC |  |  |  |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |  |  |
Ownership percentage |  | 8.50% |  |  |  |  |  |
Tatex Thailand II, LLC |  |  |  |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |  |  |
Equity method investment, ownership interest, percent |  | 23.50% |  |  |  |  |  |
(Income) loss from equity method investments |  | $ (243) | (159) |  |  |  |  |
Tatex Thailand III, LLC |  |  |  |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |  |  |
Equity method investment, ownership interest, percent |  | 17.90% |  |  |  |  |  |
(Income) loss from equity method investments |  | $ 0 | 0 |  |  |  |  |
Grizzly Oil Sands ULC |  |  |  |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |  |  |
Equity method investment, ownership interest, percent |  | 24.9999% |  |  |  |  |  |
Gas and oil area, reserve (acres) | a |  | 830 |  |  |  |  |  |
(Income) loss from equity method investments |  | $ 365 | 23,685 |  |  |  |  |
Other than temporary impairment loss |  |  | 23,100 |  |  |  |  |
Equity method investment, amount of cash calls, based on proportionate ownership interest |  | 700 |  |  |  |  |  |
Equity method investments, increase (decrease) due to foreign currency translation adjustment |  | $ 1,300 | 10,300 |  |  |  |  |
Grizzly Oil Sands ULC | Level 3 |  |  |  |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |  |  |
Equity method investments, fair value of minority interest |  |  | 39,100 |  |  |  |  |
Windsor Midstream LLC |  |  |  |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |  |  |
Equity method investment, ownership interest, percent |  | 22.50% |  |  |  |  |  |
(Income) loss from equity method investments |  | $ (311) | (167) |  |  |  |  |
Distributions from equity method investments |  | $ 200 | 100 |  |  |  |  |
Sturgeon Acquisitions LLC |  |  |  |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |  |  |
Equity method investment, ownership interest, percent |  | 25.00% |  |  |  |  |  |
(Income) loss from equity method investments |  | $ 68 | 377 |  |  |  |  |
Payments for equity method investments |  |  |  |  |  | $ 20,700 |  |
Mammoth Energy Services LP |  |  |  |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |  |  |
Equity method investment, ownership interest, percent |  | 24.20% |  | 30.50% |  | 30.50% |  |
Number of entities contributed for ownership interest | entity |  |  |  | 4 |  |  |  |
Equity method investments, increase (decrease) due to foreign currency translation adjustment |  | $ 100 | (1,200) |  |  |  |  |
Shares received from equity method investee in exchange for ownership interest (in shares) | shares | 9,150,000 |  |  |  |  |  |  |
Mammoth Energy Services LP | IPO | Common Stock | Certain selling stockholders |  |  |  |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |  |  |
Number of shares sold by Mammoth Energy (in shares) | shares | 7,500,000 |  |  |  |  |  |  |
Mammoth Energy Services LP | IPO | Common Stock | Selling stockholders |  |  |  |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |  |  |
Number of shares sold by Mammoth Energy (in shares) | shares | 250,000 |  |  |  |  |  |  |
Strike Force Midstream LLC |  |  |  |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |  |  |
Equity method investment, ownership interest, percent |  | 25.00% |  |  |  |  |  |
(Income) loss from equity method investments |  | $ 2,541 | $ 0 |  |  |  |  |
Equity method investment, amount of cash calls, based on proportionate ownership interest |  | 10,000 |  |  |  |  |  |
Distributions from equity method investments |  | $ 400 |  |  |  |  |  |
Strike Force Midstream LLC | Rice Energy Inc |  |  |  |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |  |  |
Ownership percentage by parent |  |  |  |  |  |  | 75.00% |
Strike Force Midstream LLC | Level 3 |  |  |  |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |  |  |
Equity method investments, fair value of minority interest |  |  |  |  |  |  |  | $ 22,500
Phu Horm Field | APICO, LLP |  |  |  |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |  |  |
Gas and oil area, reserve (acres) | a |  | 180 |  |  |  |  |  |
Concession Acreage in Southeast Asia | Tatex Thailand III, LLC |  |  |  |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |  |  |
Gas and oil area, reserve (acres) | a |  |  |  |  | 245 |  |  |

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