Consolidated Statements of Operations (Unaudited) - USD ($) shares in Thousands, $ in Thousands		3 Months Ended
	Jan. 01, 2017	Mar. 31, 2017	Mar. 31, 2016
Revenue		$ 314,194
Costs and expenses:
Direct costs		261,743
Selling, general and administrative expenses		62,092
Research and development		1,217
Depreciation and amortization		31,606
Impairment expense
(Gain) loss on disposal of assets		(6,056)
Operating income (loss)		(36,408)
Other income (expense):
Interest expense, net		(691)
Other income (expense), net		1,562
Total other income (expense)		871
Income (loss) before reorganization items and income taxes		(35,537)
Reorganization items
Income tax (benefit) expense		(3,236)
Net income (loss)		$ (32,301)
Net income (loss) per common share:
Basic (in dollars per share)		$ (0.58)
Diluted (in dollars per share)		$ (0.58)
Weighted average common shares outstanding:
Basic (in shares)		55,557
Diluted (in shares)		55,557
Predecessor [Member]
Revenue			$ 269,615
Costs and expenses:
Direct costs			261,766
Selling, general and administrative expenses			62,039
Research and development			2,377
Depreciation and amortization			58,953
Impairment expense			381,694
(Gain) loss on disposal of assets			3,202
Operating income (loss)			(500,416)
Other income (expense):
Interest expense, net			(25,468)
Other income (expense), net			3,324
Total other income (expense)			(22,144)
Income (loss) before reorganization items and income taxes			(522,560)
Reorganization items	(293,969)
Income tax (benefit) expense	(4,613)		(94,148)
Net income (loss)	$ 298,582		$ (428,412)
Net income (loss) per common share:
Basic (in dollars per share)	$ 2.52		$ (3.65)
Diluted (in dollars per share)	$ 2.52		$ (3.65)
Weighted average common shares outstanding:
Basic (in shares)	118,633		117,533
Diluted (in shares)	118,633		117,533