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Equity Investments (Narrative) (Details) (USD $)
In Thousands, except Share data, unless otherwise specified |
3 Months Ended | 6 Months Ended | 6 Months Ended | 6 Months Ended | 3 Months Ended | 6 Months Ended | 1 Months Ended | 3 Months Ended | 6 Months Ended | 3 Months Ended | 6 Months Ended | 3 Months Ended | 6 Months Ended | 3 Months Ended | 6 Months Ended | 3 Months Ended | 3 Months Ended | 3 Months Ended | |||||||||||||||||||||||||
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Jun. 30, 2012
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Jun. 30, 2011
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Jun. 30, 2012
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Jun. 30, 2011
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Dec. 31, 2011
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Jun. 30, 2012
Tatex Thailand II, LLC [Member]
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Dec. 31, 2011
Tatex Thailand II, LLC [Member]
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Jun. 30, 2012
Tatex Thailand III, LLC [Member]
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Jun. 30, 2011
Tatex Thailand III, LLC [Member]
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Dec. 31, 2011
Tatex Thailand III, LLC [Member]
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Jun. 30, 2012
Grizzly Oil Sands ULC [Member]
lease_block
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Jun. 30, 2011
Grizzly Oil Sands ULC [Member]
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Jun. 30, 2012
Grizzly Oil Sands ULC [Member]
lease_block
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Jun. 30, 2011
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. 30, 2012
Bison Drilling And Field Services LLC [Member]
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Jun. 30, 2012
Bison Drilling And Field Services LLC [Member]
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Jun. 30, 2012
Bison Drilling And Field Services LLC [Member]
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May 15, 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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Sep. 30, 2011
Bison Drilling And Field Services LLC [Member]
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Jun. 30, 2012
Muskie Holdings LLC [Member]
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Jun. 30, 2012
Muskie Holdings LLC [Member]
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Dec. 31, 2011
Muskie Holdings LLC [Member]
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Jun. 30, 2012
Timber Wolf Terminals LLC [Member]
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Jun. 30, 2012
Timber Wolf Terminals LLC [Member]
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Mar. 31, 2012
Timber Wolf Terminals LLC [Member]
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Dec. 31, 2011
Timber Wolf Terminals LLC [Member]
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Jun. 30, 2012
Windsor Midstream LLC [Member]
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Jun. 30, 2012
Windsor Midstream LLC [Member]
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Mar. 31, 2012
Windsor Midstream LLC [Member]
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Dec. 31, 2011
Windsor Midstream LLC [Member]
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Jun. 30, 2012
Stingray Pressure Pumping LLC [Member]
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Dec. 31, 2011
Stingray Pressure Pumping LLC [Member]
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Jun. 30, 2012
Stingray Cementing LLC [Member]
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Dec. 31, 2011
Stingray Cementing LLC [Member]
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Jun. 30, 2012
Blackhawk Midstream LLC [Member]
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Dec. 31, 2011
Blackhawk Midstream LLC [Member]
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Jun. 30, 2012
Apico Llc [Member]
Tatex Thailand II, LLC [Member]
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Mar. 31, 2012
MidMar Gas LLC [Member]
Windsor Midstream LLC [Member]
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Jun. 30, 2012
Southeast Asia [Member]
Apico Llc [Member]
Tatex Thailand II, LLC [Member]
acre
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Jun. 30, 2012
Wexford Capital LP [Member]
Tatex Thailand III, LLC [Member]
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| Schedule of Equity Method Investments [Line Items] | |||||||||||||||||||||||||||||||||||||||||||
| Ownership interest | 23.50% | 17.90% | 24.9999% | 24.9999% | 40.00% | 25.00% | 25.00% | 50.00% | 22.50% | 50.00% | 50.00% | 50.00% | |||||||||||||||||||||||||||||||
| Equity Method Investment, Number of Lease Blocks Owned by Affiliate | 11 | 11 | |||||||||||||||||||||||||||||||||||||||||
| Equity shares owned by affiliate | 85,122 | ||||||||||||||||||||||||||||||||||||||||||
| Equity Method Investment, Total Shares Outstanding of Sub Affiliate | 1,000,000 | ||||||||||||||||||||||||||||||||||||||||||
| Gas and Oil Area, Developed, Gross, Held by Sub Affiliate | 2,000,000 | ||||||||||||||||||||||||||||||||||||||||||
| Distributions received | $ 200 | $ 329 | $ 200 | ||||||||||||||||||||||||||||||||||||||||
| Equity investments | 185,934 | 185,934 | 86,824 | 829 | 1,030 | 8,840 | 8,282 | 144,810 | 144,810 | 69,008 | 14,228 | 14,228 | 6,366 | 4,310 | 4,310 | 2,138 | 977 | 977 | 7,710 | 7,710 | 3,940 | 290 | |||||||||||||||||||||
| Remaining interests in investee, percent | 68.70% | ||||||||||||||||||||||||||||||||||||||||||
| Cash calls paid | 626 | 78,312 | 1,373 | 2,244 | 574 | 4,027 | 291 | 244 | |||||||||||||||||||||||||||||||||||
| Loss from equity investments | 360 | 642 | 628 | 958 | 68 | 138 | 306 | 558 | 584 | 813 | (342) | (337) | 63 | 72 | 23 | 23 | (56) | (115) | 87 | 244 | |||||||||||||||||||||||
| Equity Method Investments, Increase (Decrease) Due To Foreign Currency Translation Adjustment | (2,865) | (1,926) | |||||||||||||||||||||||||||||||||||||||||
| Interest income | 4 | 37 | 31 | 75 | 40 | 76 | |||||||||||||||||||||||||||||||||||||
| Increase in investment of affiliate due to conversion of debt to equity | 22,325 | ||||||||||||||||||||||||||||||||||||||||||
| Currency transaction loss in note receivable | 75 | ||||||||||||||||||||||||||||||||||||||||||
| Ownership interest cost | 6,009 | 2,142 | 1,000 | 7,021 | |||||||||||||||||||||||||||||||||||||||
| Equity method investment additional ownership percentage | 15.00% | ||||||||||||||||||||||||||||||||||||||||||
| Equity Method Investment, Increase (Decrease) in Aggregate Cost | 6,152 | ||||||||||||||||||||||||||||||||||||||||||
| Loans Receivable, Basis Spread on Variable Rate | 0.28% | ||||||||||||||||||||||||||||||||||||||||||
| Loans Receivable, Fixed Interest Rate | 8.00% | ||||||||||||||||||||||||||||||||||||||||||
| Origination of Notes Receivable from Related Parties | 1,594 | 3,181 | 1,594 | ||||||||||||||||||||||||||||||||||||||||
| Notes Receivable, Related Parties, Noncurrent | $ 1,595 | $ 1,595 | $ 0 | $ 1,595 | $ 1,595 | ||||||||||||||||||||||||||||||||||||||
| Equity Method Invesmtent, Ownership Percentage, Owned by Affiliate | 28.40% | ||||||||||||||||||||||||||||||||||||||||||