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Equity Investments (Narrative) (Details) (USD $)
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12 Months Ended | 12 Months Ended | 0 Months Ended | 9 Months Ended | 12 Months Ended | 12 Months Ended | 12 Months Ended | 12 Months Ended | 0 Months Ended | 12 Months Ended | 12 Months Ended | 0 Months Ended | ||||||||||||||||||||||||||||||||||||||||||||||||||
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Dec. 31, 2013
acre
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Dec. 31, 2012
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Dec. 31, 2011
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May 31, 2013
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Dec. 31, 2010
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Dec. 31, 2013
Tatex Thailand II, LLC [Member]
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Dec. 31, 2012
Tatex Thailand II, LLC [Member]
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Dec. 31, 2011
Tatex Thailand II, LLC [Member]
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Dec. 31, 2013
Apico Llc [Member]
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Dec. 31, 2013
Tatex Thailand III, LLC [Member]
acre
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Dec. 31, 2012
Tatex Thailand III, LLC [Member]
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Dec. 31, 2011
Tatex Thailand III, LLC [Member]
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Dec. 31, 2013
Grizzly Oil Sands ULC [Member]
acre
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Dec. 31, 2012
Grizzly Oil Sands ULC [Member]
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Dec. 31, 2011
Grizzly Oil Sands ULC [Member]
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Dec. 07, 2011
Grizzly Oil Sands ULC [Member]
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Apr. 01, 2010
Grizzly Oil Sands ULC [Member]
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Jan. 01, 2008
Grizzly Oil Sands ULC [Member]
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May 15, 2012
Bison Drilling And Field Services LLC [Member]
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Sep. 30, 2012
Bison Drilling And Field Services LLC [Member]
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Dec. 31, 2013
Bison Drilling And Field Services LLC [Member]
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Dec. 31, 2012
Bison Drilling And Field Services LLC [Member]
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Dec. 31, 2011
Bison Drilling And Field Services LLC [Member]
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May 15, 2012
Bison Drilling And Field Services LLC [Member]
Maximum [Member]
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Dec. 31, 2013
Muskie Holdings LLC [Member]
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Dec. 31, 2012
Muskie Holdings LLC [Member]
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Dec. 31, 2011
Muskie Holdings LLC [Member]
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Jul. 02, 2013
Muskie Holdings LLC [Member]
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Dec. 31, 2013
Timber Wolf Terminals LLC [Member]
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Dec. 31, 2012
Timber Wolf Terminals LLC [Member]
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Dec. 31, 2011
Timber Wolf Terminals LLC [Member]
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Dec. 31, 2013
Windsor Midstream LLC [Member]
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Dec. 31, 2012
Windsor Midstream LLC [Member]
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Dec. 31, 2011
Windsor Midstream LLC [Member]
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Dec. 31, 2013
Windsor Midstream LLC [Member]
MidMar Gas LLC [Member]
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Dec. 31, 2013
Stingray Pressure Pumping LLC [Member]
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Dec. 31, 2012
Stingray Pressure Pumping LLC [Member]
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Dec. 31, 2011
Stingray Pressure Pumping LLC [Member]
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Dec. 31, 2013
Stingray Cementing LLC [Member]
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Dec. 31, 2012
Stingray Cementing LLC [Member]
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Dec. 31, 2011
Stingray Cementing LLC [Member]
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Dec. 31, 2013
Blackhawk Midstream LLC [Member]
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Dec. 31, 2012
Blackhawk Midstream LLC [Member]
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Dec. 31, 2011
Blackhawk Midstream LLC [Member]
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Dec. 31, 2013
Stingray Logistics LLC [Member]
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Dec. 31, 2012
Stingray Logistics LLC [Member]
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Dec. 31, 2011
Stingray Logistics LLC [Member]
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Nov. 18, 2013
Diamondback Energy LLC [Member]
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Nov. 11, 2013
Diamondback Energy LLC [Member]
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Jul. 05, 2013
Diamondback Energy LLC [Member]
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Jun. 24, 2013
Diamondback Energy LLC [Member]
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Dec. 31, 2013
Diamondback Energy LLC [Member]
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Dec. 31, 2012
Diamondback Energy LLC [Member]
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Dec. 31, 2011
Diamondback Energy LLC [Member]
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Dec. 17, 2012
Diamondback Energy LLC [Member]
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Jun. 30, 2012
Diamondback Energy LLC [Member]
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Dec. 31, 2013
Stingray Energy Services LLC [Member]
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Dec. 31, 2012
Stingray Energy Services LLC [Member]
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Dec. 31, 2011
Stingray Energy Services LLC [Member]
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Jan. 28, 2014
Subsequent Event [Member]
Blackhawk Midstream LLC [Member]
Ohio Gathering Company, LLC and Ohio Condensate Company, LLC [Member]
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May 15, 2012
LIBOR [Member]
Bison Drilling And Field Services LLC [Member]
Minimum [Member]
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Jul. 02, 2013
Prime Rate [Member]
Muskie Holdings LLC [Member]
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| Schedule of Equity Method Investments [Line Items] | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Equity shares owned by affiliate (shares) | 85,122 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Total shares owned of subaffiliate (shares) | 1,000,000 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Gas and oil area, reserve (acres) | 243,000 | 245,000 | 830,000 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Distributions received | $ 1,276,000 | $ 820,000 | $ 870,000 | $ 84,800,000 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| (Income) loss from equity method investments | 213,058,000 | 8,322,000 | (1,418,000) | (343,000) | (7,000) | (7,000) | (254,000) | (251,000) | (172,000) | (2,999,000) | (1,512,000) | (1,592,000) | (3,533,000) | (373,000) | 357,000 | (1,975,000) | (1,031,000) | (4,000) | 6,000 | (122,000) | 0 | 1,125,000 | 663,000 | 0 | 818,000 | (1,235,000) | 0 | (93,000) | (159,000) | 0 | (673,000) | (436,000) | 0 | (51,000) | (36,000) | 0 | 220,129,000 | 12,821,000 | 0 | 215,000 | 0 | 0 | ||||||||||||||||||||
| Cash calls paid | (2,400,000) | (600,000) | (33,900,000) | (103,900,000) | (2,300,000) | (7,500,000) | (2,200,000) | (6,200,000) | (100,000) | (1,800,000) | (1,800,000) | (14,500,000) | 0 | (3,300,000) | (700,000) | (400,000) | (1,000,000) | |||||||||||||||||||||||||||||||||||||||||||||
| Purchase price | 190,000,000 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Amount put in escrow | (10,000,000) | 14,300,000 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Ownership interest | 23.50% | 17.90% | 25.00% | 40.00% | 25.00% | 50.00% | 22.50% | 28.40% | 50.00% | 50.00% | 50.00% | 50.00% | 7.20% | 21.40% | 50.00% | |||||||||||||||||||||||||||||||||||||||||||||||
| Equity investments | 440,068,000 | 381,484,000 | 203,000 | 10,774,000 | 8,657,000 | 191,473,000 | 172,766,000 | 12,318,000 | 13,518,000 | 7,544,000 | 7,320,000 | 1,001,000 | 878,000 | 10,632,000 | 9,503,000 | 19,624,000 | 13,265,000 | 3,291,000 | 3,110,000 | 0 | 0 | 903,000 | 947,000 | 178,708,000 | 151,317,000 | 138,500,000 | 3,800,000 | 0 | ||||||||||||||||||||||||||||||||||
| Increase (decrease) due to foreign currency translation adjustment | 12,200,000 | (1,400,000) | 900,000 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Loans receivable, description of variable rate basis | LIBOR | LIBOR | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Loans receivable, basis spread on variable rate | 0.69% | 4.00% | 0.28% | 2.50% | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Loans receivable, maximum rate | 8.00% | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Origination of Notes Receivable from Related Parties | 875,000 | 0 | 3,182,000 | 3,200,000 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Investment Income, Interest | 297,000 | 72,000 | 186,000 | 100,000 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Increase in equity method investment | 22,300,000 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Cumulative translation adjustment | (9,781,000) | 2,442,000 | 1,087,000 | 2,952,000 | 100,000 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Amount loaned during period | 1,600,000 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Loan receivable | 900,000 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Payments for equity method investments | 47,014,000 | 147,307,000 | 34,621,000 | 1,000,000 | 7,000,000 | 2,900,000 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Sale of stock, price per share (usd per share) | $ 51.39 | $ 34.75 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Shares sold | 300,000 | 2,000,000 | 282,755 | 1,951,781 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Net sales proceeds | $ (192,737,000) | $ 0 | $ 0 | $ 15,400,000 | $ 102,800,000 | $ 9,400,000 | $ 65,100,000 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Share price (usd per share) | $ 52.88 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||