UNAUDITED CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Mar. 31, 2023	Mar. 31, 2022	Mar. 31, 2023	Mar. 31, 2022
OPERATING REVENUES
Drilling services	$ 766,682	$ 465,370	$ 1,483,852	$ 872,904
Other	2,540	2,227	5,007	4,475
Total operating revenues	769,222	467,597	1,488,859	877,379
OPERATING COSTS AND EXPENSES
Drilling services operating expenses, excluding depreciation and amortization	449,110	339,759	877,361	639,411
Other operating expenses	1,188	1,181	2,314	2,363
Depreciation and amortization	96,255	102,937	192,910	203,374
Research and development	8,702	6,387	15,635	12,914
Selling, general and administrative	52,855	47,051	101,310	90,766
Asset impairment charges	0	0	12,097	4,363
Restructuring charges	0	63	0	805
Gain on reimbursement of drilling equipment	(11,574)	(6,448)	(27,298)	(11,702)
Other (gain) loss on sale of assets	2,519	716	4,898	(313)
Total operating costs and expenses	594,017	490,214	1,169,431	942,607
OPERATING INCOME (LOSS) FROM CONTINUING OPERATIONS	175,205	(22,617)	319,428	(65,228)
Other income (expense)
Interest and dividend income	5,055	3,399	9,760	5,988
Interest expense	(4,239)	(4,390)	(8,594)	(10,504)
Gain on investment securities	39,752	22,132	24,661	69,994
Loss on extinguishment of debt	0	0	0	(60,083)
Other	(743)	(476)	(1,403)	(1,018)
Total unallocated amounts	39,825	20,665	24,424	4,377
Income (loss) from continuing operations before income taxes	215,030	(1,952)	343,852	(60,851)
Income tax expense (benefit)	51,129	2,672	83,524	(4,896)
Income (loss) from continuing operations	163,901	(4,624)	260,328	(55,955)
Income (loss) from discontinued operations before income taxes	139	(352)	857	(383)
Income tax expense	0	0	0	0
Income (loss) from discontinued operations	139	(352)	857	(383)
NET INCOME (LOSS)	$ 164,040	$ (4,976)	$ 261,185	$ (56,338)
Basic earnings (loss) per common share:
Income (loss) from continuing operations (in dollars per share)	$ 1.55	$ (0.05)	$ 2.45	$ (0.53)
Income from discontinued operations (in dollars per share)	0	0	0.01	0
Net income (loss) (in dollars per share)	1.55	(0.05)	2.46	(0.53)
Diluted earnings (loss) per common share:
Income (loss) from continuing operations (in dollars per share)	1.55	(0.05)	2.45	(0.53)
Income from discontinued operations (in dollars per share)	0	0	0.01	0
Net income (loss) (in dollars per share)	$ 1.55	$ (0.05)	$ 2.46	$ (0.53)
Weighted average shares outstanding:
Basic (in shares)	103,968	105,393	104,615	106,494
Diluted (in shares)	104,363	105,393	105,003	106,494