Effective interest rate for the funds borrowed under the debt agreement considering interest compounding and original issue discount or premium.

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Carrying amount of long-term debt, net of unamortized discount or premium, including current and noncurrent amounts. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

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Debt Debt schedule of long term debt (Details) - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014	May. 30, 2014	Dec. 16, 2013
6.75% senior notes due November 2020
Debt Instrument
Net unamortized premiums				$ 10,000
6.375% senior notes due September 2022
Debt Instrument
Net unamortized premiums				$ 7,000
Successor
Debt Instrument
Credit facility	$ 873,175	$ 1,173,175
Senior notes, net	845,368	913,777
Total debt, net	1,718,543	2,086,952
Less current portion (2)	(873,175)	0
Total long-term debt, net	845,368	2,086,952
Credit Facility \| Successor \| Credit Facility
Debt Instrument
Credit facility	$ 873,175	$ 1,173,175
Credit facility, variable interest rate	3.17%	2.67%
Senior Notes [Member] \| 10.25% Senior notes due 2014
Debt Instrument
Senior notes, net			$ 205,000
Senior Notes [Member] \| Successor
Debt Instrument
Net unamortized premiums	$ 11,568	$ 14,644
Senior Notes [Member] \| Successor \| 6.75% senior notes due November 2020
Debt Instrument
Senior notes, net	261,100	299,970
Senior Notes [Member] \| Successor \| 6.375% senior notes due September 2022
Debt Instrument
Senior notes, net	$ 572,700	$ 599,163