Debt and Other Long Term Obligations - Summary of Outstanding Debt and Other Long Term Obligations (Details) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Total Debt:
Total long-term debt	$ 2,195,000	$ 3,759,000
Less: Deferred financing costs	(60,986)
Less: Liabilities subject to compromise		(3,759,000)
Total long-term debt not subject to compromise	2,134,014	0
Other long-term obligations:
Other long-term obligations	190,922	177,088
Ultra Resources, Inc.
Total Debt:
Total long-term debt		1,460,000
Term Loan Secured Due 2024
Total Debt:
Total long-term debt	975,000
6.875% Senior, Unsecured Notes Due 2022
Total Debt:
Total long-term debt	700,000
7.125% Senior, Unsecured Notes Due 2025
Total Debt:
Total long-term debt	500,000
6.125% Senior Notes Due 2024
Total Debt:
Total long-term debt		850,000
5.75% Senior Notes Due 2018
Total Debt:
Total long-term debt		450,000
Credit Agreement
Total Debt:
Total long-term debt	20,000
Credit Agreement | Ultra Resources, Inc.
Total Debt:
Total long-term debt	$ 20,000
Credit Facility Due October 2016
Total Debt:
Total long-term debt		$ 999,000