Consolidated Statement of Operations - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Revenue
Total revenue	$ 158,420	$ 126,862	$ 760,848
Operating costs and expenses
Operating costs	150,668	149,084	156,893
General and administrative	20,539	21,022	128,548
Depreciation	56,242	69,216	73,820
Loss on impairment	0	128,876	0
Total operating costs and expenses	227,449	368,198	359,261
(Loss) income from operations	(69,029)	(241,336)	401,587
Other income (expense)
Interest income	124	871	116,368
Interest expense and other financing charges	(34,034)	(34,041)	(46,575)
Other, net	(2,171)	2,646	216
Total other (expense) income	(36,081)	(30,524)	70,009
(Loss) income before income taxes	(105,110)	(271,860)	471,596
Income tax provision	5,141	4,897	15,121
Net (loss) income	(110,251)	(276,757)	456,475
Net (loss) income attributable to noncontrolling interests	(114)	(38)	741
Net (loss) income attributable to shareholders	$ (110,137)	$ (276,719)	$ 455,734
(Loss) earnings per share
Basic and Diluted	$ (8.40)	$ (21.10)	$ (28.29)
Contract Drilling Services
Revenue
Total revenue	$ 131,703	$ 112,013	$ 144,571
Contract Termination Revenue
Revenue
Total revenue	0	0	594,029
Reimbursables and Other
Revenue
Total revenue	$ 26,717	$ 14,849	$ 22,248