Consolidated Statements of Comprehensive Income (Loss) (Unaudited) - USD ($) $ in Thousands		3 Months Ended		6 Months Ended
	Jan. 01, 2017	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Net income (loss)		$ (12,721)	$ (291,116)	$ (45,022)	$ (719,529)
Other comprehensive income (loss):
Foreign currency translation gain, net of tax		409		(304)
Comprehensive income (loss)		$ (12,312)		$ (45,326)
Predecessor [Member]
Net income (loss)	$ 298,582		(291,116)		(719,529)
Other comprehensive income (loss):
Foreign currency translation gain, net of tax			49		2,023
Comprehensive income (loss)	$ 298,582		$ (291,067)		$ (717,506)