Consolidated Statements of Operations (Unaudited) - USD ($) shares in Thousands, $ in Thousands		3 Months Ended		9 Months Ended
	Jan. 01, 2017	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Revenue		$ 442,652		$ 1,146,989
Costs and expenses:
Direct costs		339,980		912,197
Selling, general and administrative expenses		59,639		182,896
Research and development		1,674		4,944
Depreciation and amortization		36,271		100,709
Impairment expense
(Gain) loss on disposal of assets		(1,324)		(10,517)
Operating income (loss)		6,412		(43,240)
Other income (expense):
Interest expense, net		(171)		(1,276)
Other income (expense), net		1,116		1,221
Total other income (expense)		945		(55)
Income (loss) before reorganization items and income taxes		7,357		(43,295)
Reorganization items
Income tax benefit		(3,127)		(8,756)
Net income (loss)		$ 10,484		$ (34,539)
Net income (loss) per common share:
Basic (in dollars per share)		$ 0.17		$ (0.57)
Diluted (in dollars per share)		$ 0.17		$ (0.57)
Weighted average common shares outstanding:
Basic (in shares)		62,697		60,188
Diluted (in shares)		62,704		60,188
Revenue		$ 442,652		$ 1,146,989
Predecessor [Member]
Revenue			$ 232,537		$ 727,320
Costs and expenses:
Direct costs			216,841		708,377
Selling, general and administrative expenses			48,825		182,205
Research and development			1,797		5,959
Depreciation and amortization			51,321		164,557
Impairment expense					430,406
(Gain) loss on disposal of assets			(694)		4,220
Operating income (loss)			(85,553)		(768,404)
Other income (expense):
Interest expense, net			(8,158)		(155,559)
Other income (expense), net			7,075		12,397
Total other income (expense)			(1,083)		(143,162)
Income (loss) before reorganization items and income taxes			(86,636)		(911,566)
Reorganization items	(293,969)		40,877		40,877
Income tax benefit	(4,613)		(21,123)		(126,522)
Net income (loss)	$ 298,582		$ (106,390)		$ (825,921)
Net income (loss) per common share:
Basic (in dollars per share)	$ 2.52		$ (0.90)		$ (6.99)
Diluted (in dollars per share)	$ 2.52		$ (0.90)		$ (6.99)
Weighted average common shares outstanding:
Basic (in shares)	118,633		118,626		118,196
Diluted (in shares)	118,633		118,626		118,196
Revenue			$ 232,537		$ 727,320