Condensed Consolidated Statements of Operations (Unaudited) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Revenues:
Total revenues	$ 281,563	$ 205,702	$ 513,584	$ 391,941
Operating expenses:
Depreciation	27,906	25,693	55,812	52,645
General and administrative	16,824	19,753	36,409	36,485
Gain on disposition of assets	(1,933)	(685)	(3,146)	(4,729)
Total operating expenses	271,323	215,465	508,303	435,620
Operating income (loss)	10,240	(9,763)	5,281	(43,679)
Other income (expense):
Interest income	5	0	12	1
Interest expense, net of amounts capitalized	(12,755)	(10,103)	(24,795)	(18,428)
Foreign currency transaction (loss) gain	(1,968)	1,607	(3,239)	(522)
Other, net	136	(47)	(17)	1,315
Loss before income tax benefit (expense)	(4,342)	(18,306)	(22,758)	(61,313)
Income tax benefit (expense)	243,125	(3,623)	268,770	5,030
Net income (loss)	$ 238,783	$ (21,929)	$ 246,012	$ (56,283)
Earnings (loss) per share, Basic	$ 2.35	$ (0.22)	$ 2.43	$ (0.56)
Earnings (loss) per share, Diluted	$ 2.29	$ (0.22)	$ 2.36	$ (0.56)
Weighted-average shares outstanding, Basic	101,487	100,108	101,409	100,092
Weighted-average shares outstanding, Diluted	104,236	100,108	104,091	100,092
Contract Drilling [Member]
Revenues:
Total revenues	$ 264,990	$ 176,879	$ 479,373	$ 327,131
Operating expenses:
Contract drilling, excluding depreciation	212,947	142,150	386,436	287,052
Reimbursable Expenses [Member]
Revenues:
Total revenues	16,573	28,823	34,211	64,810
Operating expenses:
Contract drilling, excluding depreciation	$ 15,579	$ 28,554	$ 32,792	$ 64,167