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Equity Investments (Narrative) (Details) a in Thousands |  |  | 1 Months Ended | 3 Months Ended | 4 Months Ended | 12 Months Ended |  |  |  |
--- | --- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Nov. 12, 2014 USD ($) shares | Jan. 28, 2014 USD ($) | Mar. 31, 2015 USD ($) | Sep. 30, 2014 USD ($) | Sep. 30, 2014 USD ($) shares | Dec. 31, 2015 USD ($) a shares | Dec. 31, 2014 USD ($) | Dec. 31, 2013 USD ($) shares | Nov. 30, 2014 | Jul. 02, 2013 USD ($) | Oct. 11, 2012 USD ($) shares | Oct. 05, 2012 USD ($)
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Gas and oil area, reserve (acres) | a |  |  |  |  |  | 243 |  |  |  |  |  |
Aggregate gain (loss) from equity method investments |  |  |  |  |  | $ (106,093,000) | $ 139,434,000 | $ 213,058,000 |  |  |  |
Payments for equity method investments |  |  |  |  |  | 14,472,000 | 63,999,000 | 47,014,000 |  |  |  |
Distributions received |  |  |  |  |  | 4,914,000 | 0 | 1,276,000 |  |  |  |
Carrying Value |  |  |  |  |  | 242,393,000 | 369,581,000 |  |  |  |  |
Gain (Loss) on Investments |  |  |  |  |  | $ 0 | 84,470,000 | 0 |  |  |  |
Apico Llc |  |  |  |  |  |  |  |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Equity shares owned by affiliate (shares) | shares |  |  |  |  |  | 85,122 |  |  |  |  |  |
Total shares owned of subaffiliate (shares) | shares |  |  |  |  |  | 1,000,000 |  |  |  |  |  |
Investment in Tatex Thailand II, LLC |  |  |  |  |  |  |  |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Aggregate gain (loss) from equity method investments |  |  |  |  |  | $ (189,000) | 475,000 | 343,000 |  |  |  |
Equity Method Investment, Amount of Cash Calls, Based on Proportionate Ownership Interest |  |  |  |  |  | $ 0 | 2,400,000 |  |  |  |  |
Ownership interest |  |  |  |  |  | 23.50% |  |  |  |  |  |
Carrying Value |  |  |  |  |  | $ 0 | 0 |  |  |  |  |
Investment in Tatex Thailand III, LLC |  |  |  |  |  |  |  |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Gas and oil area, reserve (acres) | a |  |  |  |  |  | 245 |  |  |  |  |  |
Equity method investment, other than temporary impairment |  |  |  |  |  |  | 12,100,000 |  |  |  |  |
Aggregate gain (loss) from equity method investments |  |  |  |  |  | $ 0 | (12,408,000) | (254,000) |  |  |  |
Equity Method Investment, Amount of Cash Calls, Based on Proportionate Ownership Interest |  |  |  |  |  |  | 1,600,000 |  |  |  |  |
Ownership interest |  |  |  |  |  | 17.90% |  |  |  |  |  |
Carrying Value |  |  |  |  |  | $ 0 | 0 |  |  |  |  |
Investment in Grizzly Oil Sands ULC |  |  |  |  |  |  |  |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Gas and oil area, reserve (acres) | a |  |  |  |  |  | 830 |  |  |  |  |  |
Equity method investment, other than temporary impairment |  |  |  |  |  | $ 101,600,000 |  |  |  |  |  |
Aggregate gain (loss) from equity method investments |  |  |  |  |  | (115,544,000) | (13,159,000) | (2,999,000) |  |  |  |
Equity Method Investment, Amount of Cash Calls, Based on Proportionate Ownership Interest |  |  |  |  |  | 14,500,000 | 18,800,000 |  |  |  |  |
Increase (decrease) due to foreign currency translation adjustment |  |  |  |  |  | $ 28,500,000 | 16,900,000 | 12,200,000 |  |  |  |
Ownership interest |  |  |  |  |  | 24.9999% |  |  |  |  |  |
Carrying Value |  |  |  |  |  | $ 50,645,000 | 180,218,000 |  |  |  |  |
Investment in Bison Drilling and Field Services LLC |  |  |  |  |  |  |  |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Aggregate gain (loss) from equity method investments |  |  |  |  |  | $ 0 | (213,000) | (3,533,000) |  |  |  |
Equity Method Investment, Amount of Cash Calls, Based on Proportionate Ownership Interest |  |  |  |  |  |  | 17,000,000 |  |  |  |  |
Ownership interest |  |  |  |  |  | 0.00% |  |  |  |  |  |
Carrying Value |  |  |  |  |  | $ 0 | 0 |  |  |  |  |
Muskie Holdings LLC |  |  |  |  |  |  |  |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Aggregate gain (loss) from equity method investments |  |  |  |  |  | $ 0 | (371,000) | (1,975,000) |  |  |  |
Equity Method Investment, Amount of Cash Calls, Based on Proportionate Ownership Interest |  |  |  |  |  |  | 1,000,000 |  |  |  |  |
Loan receivable |  |  |  |  |  |  |  |  |  | $ 900,000 |  |
Ownership interest |  |  |  |  |  | 0.00% |  |  |  |  |  |
Carrying Value |  |  |  |  |  | $ 0 | 0 |  |  |  |  |
Investment in Timber Wolf Terminals LLC |  |  |  |  |  |  |  |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Aggregate gain (loss) from equity method investments |  |  |  |  |  | (14,000) | (9,000) | 6,000 |  |  |  |
Equity Method Investment, Amount of Cash Calls, Based on Proportionate Ownership Interest |  |  |  |  |  | $ 0 |  |  |  |  |  |
Ownership interest |  |  |  |  |  | 50.00% |  |  |  |  |  |
Carrying Value |  |  |  |  |  | $ 999,000 | 1,013,000 |  |  |  |  |
Investment in Windsor Midstream LLC |  |  |  |  |  |  |  |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Aggregate gain (loss) from equity method investments |  |  |  |  |  | $ 18,398,000 | 477,000 | 1,125,000 |  |  |  |
Ownership interest |  |  |  |  |  | 22.50% |  |  |  |  |  |
Distributions received |  |  |  |  |  | $ 3,900,000 |  |  |  |  |  |
Carrying Value |  |  |  |  |  | $ 27,955,000 | $ 13,505,000 |  |  |  |  |
Coronado Midstream LLC | Investment in Windsor Midstream LLC |  |  |  |  |  |  |  |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Ownership interest |  |  |  |  |  | 28.40% |  |  |  |  |  |
Property, Plant and Equipment, Estimated Sale Price |  |  | $ 600,000,000 |  |  |  |  |  |  |  |  |
Coronado Midstream [Member] | Investment in Windsor Midstream LLC |  |  |  |  |  |  |  |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Gain (Loss) on Sale of Equity Investments |  |  | $ 81,600,000 |  |  |  |  |  |  |  |  |
Stingray Pressure Pumping LLC |  |  |  |  |  |  |  |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Business Acquisition, Period Results Included in Combined Entity |  |  |  |  |  |  | 11 months |  |  |  |  |
Aggregate gain (loss) from equity method investments |  |  |  |  |  | $ 0 | $ (2,027,000) | 818,000 |  |  |  |
Equity Method Investment, Amount of Cash Calls, Based on Proportionate Ownership Interest |  |  |  |  |  |  | 2,500,000 |  |  |  |  |
Ownership interest |  |  |  |  |  | 0.00% |  |  |  |  |  |
Carrying Value |  |  |  |  |  | $ 0 | 0 |  |  |  |  |
Investment in Blackhawk Midstream LLC |  |  |  |  |  |  |  |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Aggregate gain (loss) from equity method investments |  |  |  |  |  | $ 7,216,000 | 84,787,000 | $ (673,000) |  |  |  |
Ownership interest |  |  |  |  |  | 48.50% |  |  |  |  |  |
Net proceeds received from release of escrow |  |  |  |  |  | $ 7,200,000 |  |  |  |  |  |
Carrying Value |  |  |  |  |  | 0 | $ 0 |  |  |  |  |
Investment in Blackhawk Midstream LLC | Ohio Gathering Company, LLC and Ohio Condensate Company, LLC |  |  |  |  |  |  |  |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Purchase price |  | $ 190,000,000 |  |  |  |  |  |  |  |  |  |
Amount put in escrow |  | 14,300,000 |  |  |  |  |  |  |  |  |  |
Distributions received |  | $ 84,800,000 |  |  |  |  |  |  |  |  |  |
Diamondback Energy, Inc |  |  |  |  |  |  |  |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Ownership interest |  |  |  |  |  |  | 7.20% |  |  |  |  |
Investment (shares) | shares |  |  |  |  |  |  |  |  |  |  | 7,914,036 |
Carrying Value |  |  |  |  |  |  |  |  |  |  | $ 138,500,000 |
Sale of stock, Number of shares issued in transaction | shares | 942,000 |  |  |  | 2,437,500 |  |  | 4,534,536 |  |  |  |
Sale of stock, consideration received | $ 60,800,000 |  |  |  | $ 197,600,000 |  |  | $ 192,700,000 |  |  |  |
Equity investment in Diamondback |  |  |  |  |  |  |  |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Aggregate gain (loss) from equity method investments |  |  |  |  |  | $ 0 | $ 79,654,000 | 220,129,000 |  |  |  |
Ownership interest |  |  |  |  |  | 0.00% |  |  | 20.00% |  |  |
Carrying Value |  |  |  |  |  | $ 0 | 0 |  |  |  |  |
Stingray Energy Services LLC |  |  |  |  |  |  |  |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Aggregate gain (loss) from equity method investments |  |  |  |  |  | $ (557,000) | 88,000 | 215,000 |  |  |  |
Ownership interest |  |  |  |  |  | 50.00% |  |  |  |  |  |
Carrying Value |  |  |  |  |  | $ 5,908,000 | 5,718,000 |  |  |  |  |
Investment in Sturgeon Acquisitions LLC |  |  |  |  |  |  |  |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Aggregate gain (loss) from equity method investments |  |  |  |  |  | $ 1,229,000 | 1,819,000 | 0 |  |  |  |
Payments for equity method investments |  |  |  | $ 20,700,000 |  |  |  |  |  |  |  |
Ownership interest |  |  |  | 25.00% | 25.00% | 25.00% |  |  |  |  |  |
Distributions received |  |  |  |  |  | $ 1,000,000 |  |  |  |  |  |
Carrying Value |  |  |  |  |  | 22,769,000 | $ 22,507,000 |  |  |  |  |
Mammoth Energy Partners LP |  |  |  |  |  |  |  |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Business Acquisition, Period Results Included in Combined Entity |  |  |  |  |  |  | 1 month |  |  |  |  |
Equity method investment, other than temporary impairment |  |  |  |  |  | 0 |  |  |  |  |  |
Aggregate gain (loss) from equity method investments |  |  |  |  |  | $ (16,485,000) | $ 201,000 | $ 0 |  |  |  |
Ownership interest |  |  |  |  |  | 30.50% |  |  |  |  |  |
Carrying Value |  |  |  |  |  | $ 131,630,000 | 143,973,000 |  |  |  |  |
Equity Method Investments, Fair Value Disclosure |  |  |  |  |  |  | 143,500,000 |  |  |  |  |
Gain (Loss) on Investments |  |  |  |  |  |  | 84,500,000 |  |  |  |  |
Prime Rate | Muskie Holdings LLC |  |  |  |  |  |  |  |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Loans receivable, basis spread on variable rate |  |  |  |  |  |  |  |  |  | 2.50% |  |
Income From Equity Method Investments | Investment in Tatex Thailand III, LLC |  |  |  |  |  |  |  |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Aggregate gain (loss) from equity method investments |  |  |  |  |  |  | $ (12,100,000) |  |  |  |  |
Revolving Credit Facility |  |  |  |  |  |  |  |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Long-term Line of Credit |  |  |  |  |  | 14,400,000 |  |  |  |  |  |
Revolving Credit Facility | Subsidiaries |  |  |  |  |  |  |  |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Credit facility |  |  |  |  |  |  |  |  |  |  |  | $ 125,000,000.0
Long-term Line of Credit |  |  |  |  |  | $ 57,400,000 |  |  |  |  |  |

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- Definition Period when results of operations of the acquired entity are included in the income statement of the combined entity, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References No definition available. + Details
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- Definition This item represents an other than temporary decline in value that has been recognized against an investment accounted for under the equity method of accounting. The excess of the carrying amount over the fair value of the investment represents the amount of the write down which is or was reflected in earnings. The written down value is a new cost basis with the adjusted value of the investment becoming its new carrying value subject to the equity accounting method. Evidence of a loss in value might include, but would not necessarily be limited to, absence of an ability to recover the carrying amount of the investment or inability of the investee to sustain an earnings capacity which would justify the carrying amount of the investment. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 323 -SubTopic 10 -Section 35 -Paragraph 32 -URI http://asc.fasb.org/extlink&oid=49116238&loc=d3e32787-111569 + Details
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- Definition This item represents the net total realized and unrealized gain (loss) included in earnings for the period as a result of selling or holding marketable securities categorized as trading, available-for-sale, or held-to-maturity, including the unrealized holding gain (loss) of held-to-maturity securities transferred to the trading security category and the cumulative unrealized gain (loss) which was included in other comprehensive income (a separate component of shareholders' equity) for available-for-sale securities transferred to trading securities during the period. Additionally, this item would include any gains (losses) realized during the period from the sale of investments accounted for under the cost method of accounting and losses recognized for other than temporary impairments (OTTI) of the subject investments. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 9 -Subparagraph (c)-(e) -URI http://asc.fasb.org/extlink&oid=27724398&loc=d3e27357-111563 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -URI http://asc.fasb.org/extlink&oid=56944662&loc=d3e3602-108585 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.7(c),9(a)) -URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 10 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=27724398&loc=d3e27405-111563 + Details
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- Definition This item represents the entity's proportionate share for the period of the net income (loss) of its investee (such as unconsolidated subsidiaries and joint ventures) to which the equity method of accounting is applied. This item includes income or expense related to stock-based compensation based on the investor's grant of stock to employees of an equity method investee. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=56944662&loc=d3e3602-108585 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 323 -SubTopic 10 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=35755396&loc=d3e33749-111570 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.12) -URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 9 -Article 5 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 04 -Paragraph 11 -Article 7 + Details
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- Definition For an unclassified balance sheet, reflects the carrying amount of unpaid loan amounts due from related parties at the balance sheet date. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03.7(e)) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 850 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=6457730&loc=d3e39549-107864 + Details
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- Definition The cash outflow associated with the purchase of or advances to an equity method investments, which are investments in joint ventures and entities in which the entity has an equity ownership interest normally of 20 to 50 percent and exercises significant influence. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 13 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=56944662&loc=d3e3213-108585 + Details
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