Consolidated Statements of Operations - USD ($) shares in Thousands, $ in Thousands	2 Months Ended	10 Months Ended	12 Months Ended
	Dec. 31, 2017	Nov. 14, 2017	Dec. 31, 2016	Dec. 31, 2015
Revenue	$ 13,593
Costs and expenses:
Direct operating expenses	9,859
Drydock expenses
General and administrative expenses	3,407
Pre-petition restructuring charges	1
Depreciation and amortization	4,425
Impairment charges
Loss on sale of assets and other
Total costs and expenses	17,692
Operating loss	(21,859)
Other income (expense):
Interest expense	(1,343)
Interest income	57
Gain on extinguishment of debt
Reorganization items	(969)
Other financing costs
Foreign currency loss and other	(439)
Total other expense	(2,694)
Loss before income taxes	(6,793)
Income tax benefit	10,304
Net income (loss)	$ 3,511
Earnings (loss) per share:
Basic (in dollars per share)	$ 0.35
Diluted (in dollars per share)	$ 0.35
Weighted average shares outstanding:
Basic (in shares)	9,998
Diluted (in shares)	9,998
Predecessor [Member]
Revenue		$ 88,229	$ 123,719	$ 274,806
Costs and expenses:
Direct operating expenses		69,821	83,165	169,837
Drydock expenses		5,432	4,662	15,387
General and administrative expenses		32,369	37,663	47,280
Pre-petition restructuring charges		17,861
Depreciation and amortization		47,721	58,182	72,591
Impairment charges			162,808	152,103
Loss on sale of assets and other		5,207	8,564	1,160
Total costs and expenses		178,411	355,044	458,358
Operating loss		(90,182)	(231,325)	(183,552)
Other income (expense):
Interest expense		(28,815)	(33,486)	(36,946)
Interest income		26	133	260
Gain on extinguishment of debt			35,912	458
Reorganization items		(319,922)
Other financing costs			(11,287)
Foreign currency loss and other		(270)	(2,384)	(1,088)
Total other expense		(348,981)	(11,112)	(37,316)
Loss before income taxes		(439,163)	(242,437)	(220,868)
Income tax benefit		38,244	39,458	5,633
Net income (loss)		$ (400,919)	$ (202,979)	$ (215,235)
Earnings (loss) per share:
Basic (in dollars per share)		$ (15.47)	$ (8.09)	$ (8.70)
Diluted (in dollars per share)		$ (15.47)	$ (8.09)	$ (8.70)
Weighted average shares outstanding:
Basic (in shares)		25,917	25,094	24,729
Diluted (in shares)		25,917	25,094	24,729