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Contingencies (Details) - USD ($) | 1 Months Ended | 12 Months Ended
--- | --- | ---
Sep. 30, 2014 | Dec. 31, 2015 | Dec. 31, 2014 | Dec. 31, 2013
Loss Contingencies [Line Items] |  |  |  |
Litigation Settlement, Amount | $ 18,000,000 |  |  |
Insurance Recoveries |  | $ 10,015,000 | $ 0 | $ 0
Cash, Uninsured Amount |  | 112,000,000 |  |
Maximum |  |  |  |
Loss Contingencies [Line Items] |  |  |  |
Cash, FDIC Insured Amount |  | $ 250,000 |  |
Shell Trading Company | Oil and condensate sales |  |  |  |
Loss Contingencies [Line Items] |  |  |  |
Percentage Of Production Sold |  | 90.00% | 99.00% | 99.00%
Marathon Oil Corporation | Oil and condensate sales |  |  |  |
Loss Contingencies [Line Items] |  |  |  |
Percentage Of Production Sold |  | 10.00% |  |
Markwest Utica | Natural Gas Liquids |  |  |  |
Loss Contingencies [Line Items] |  |  |  |
Percentage Of Production Sold |  | 76.00% | 100.00% | 100.00%
British Petroleum | Natural Gas Liquids |  |  |  |
Loss Contingencies [Line Items] |  |  |  |
Percentage Of Production Sold |  |  | 40.00% |
DTE Energy Trading Inc | Natural Gas Liquids |  |  |  |
Loss Contingencies [Line Items] |  |  |  |
Percentage Of Production Sold |  |  | 32.00% |
Antero Resources | Natural Gas Liquids |  |  |  |
Loss Contingencies [Line Items] |  |  |  |
Percentage Of Production Sold |  | 24.00% |  |
Interstate Gas | Natural Gas Liquids |  |  |  |
Loss Contingencies [Line Items] |  |  |  |
Percentage Of Production Sold |  |  |  | 17.00%
Interstate Gas | Natural Gas, Per Thousand Cubic Feet |  |  |  |
Loss Contingencies [Line Items] |  |  |  |
Percentage Of Production Sold |  | 79.00% |  |
Sequent | Natural Gas Liquids |  |  |  |
Loss Contingencies [Line Items] |  |  |  |
Percentage Of Production Sold |  |  |  | 32.00%
Sequent | Natural Gas, Per Thousand Cubic Feet |  |  |  |
Loss Contingencies [Line Items] |  |  |  |
Percentage Of Production Sold |  | 14.00% |  |
Hess | Natural Gas Liquids |  |  |  |
Loss Contingencies [Line Items] |  |  |  |
Percentage Of Production Sold |  |  | 19.00% | 31.00%
Hess | Natural Gas, Per Thousand Cubic Feet |  |  |  |
Loss Contingencies [Line Items] |  |  |  |
Percentage Of Production Sold |  | 5.00% |  |

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- Definition The amount recovered from insurance. These recoveries reduce costs and losses that are reported as a separate line item under operating expenses. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.3) -URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688 + Details
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