Property Acquisitions and Divestitures (Allocation and Calculation of Consideration Transferred) (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands		12 Months Ended
Dec. 16, 2014	Dec. 31, 2015
Net Assets Acquired
Asset retirement obligations reclassified to other short-term obligations		$ 9,400
Forest Oil Combination
Combination
Number of shares of Forest Oil Corporation outstanding as of the date of the Combination (in thousands)	118,863
Forest Oil Corporation closing stock price	$ 0.34
Common stock equity consideration (in thousands)	$ 40,413
Net Assets Acquired
Cash	134,887
Accounts receivable	67,797
Prepaid expenses and other current assets	6,702
Derivative instruments	31,621
Other long term assets	8,124
Other fixed assets	717
Net deferred tax asset	17,611
Accounts payable	(78,674)
Royalties payable	(7,555)
Accrued exploration and development	(27,771)
Accrued operating expenses and other	(29,258)
Accrued interest	(4,730)
Other short-term obligations	(15,191)
Asset retirement obligations	(23,946)
Other long-term obligations	(55,643)
Total identifiable net assets and consideration transferred	40,413
Asset retirement obligations reclassified to other short-term obligations	9,400
Forest Oil Combination \| As Previously Reported
Net Assets Acquired
Cash	134,887
Accounts receivable	61,889
Prepaid expenses and other current assets	7,225
Derivative instruments	31,621
Other long term assets	8,121
Other fixed assets	697
Net deferred tax asset	14,524
Accounts payable	(76,766)
Royalties payable	(7,446)
Accrued exploration and development	(27,982)
Accrued operating expenses and other	(29,246)
Accrued interest	(4,730)
Other short-term obligations	(15,191)
Asset retirement obligations	(23,946)
Other long-term obligations	(66,465)
Total identifiable net assets and consideration transferred	40,413
Forest Oil Combination \| Classification Errors \| Adjustments
Net Assets Acquired
Accounts receivable	5,908
Prepaid expenses and other current assets	(523)
Other long term assets	3
Other fixed assets	20
Net deferred tax asset	3,087
Accounts payable	(1,908)
Royalties payable	(110)
Accrued exploration and development	211
Accrued operating expenses and other	(12)
Other long-term obligations	10,823
Forest Oil Combination \| Legacy Forest Oil Revolving Credit Facility
Net Assets Acquired
Debt	(105,000)
Forest Oil Combination \| Legacy Forest Oil Revolving Credit Facility \| As Previously Reported
Net Assets Acquired
Debt	(105,000)
Forest Oil Combination \| Legacy Forest Oil Senior Notes
Net Assets Acquired
Debt	(394,783)
Forest Oil Combination \| Legacy Forest Oil Senior Notes \| As Previously Reported
Net Assets Acquired
Debt	(394,783)
Forest Oil Combination \| Proved Properties
Net Assets Acquired
Oil and gas properties	343,127
Forest Oil Combination \| Proved Properties \| As Previously Reported
Net Assets Acquired
Oil and gas properties	343,127
Forest Oil Combination \| Unproved Properties
Net Assets Acquired
Oil and gas properties	172,378
Forest Oil Combination \| Unproved Properties \| As Previously Reported
Net Assets Acquired
Oil and gas properties	189,877
Forest Oil Combination \| Unproved Properties \| Classification Errors \| Adjustments
Net Assets Acquired
Oil and gas properties	$ (17,499)
Legacy Sabine Investors \| Forest Oil Combination
Combination
Economic interest (as a percent)	73.50%
Voting power (as a percent)	40.00%
Sabine (Forest Oil) shareholders \| Forest Oil Combination
Combination
Economic interest (as a percent)	26.50%
Voting power (as a percent)	60.00%

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