CONSOLIDATED CONDENSED STATEMENTS OF OPERATIONS - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Operating revenues:
Drilling - U.S. Land	$ 405,516	$ 285,028	$ 1,000,119	$ 1,004,116
Drilling - Offshore	33,711	30,492	103,758	106,697
Drilling - International Land	55,075	47,983	157,863	171,529
Other	4,262	2,983	10,697	10,182
Total operating revenues	498,564	366,486	1,272,437	1,292,524
Operating costs and expenses:
Operating costs, excluding depreciation	337,463	186,146	881,971	684,401
Depreciation	145,043	138,690	431,667	422,336
Asset impairment charge		6,250		6,250
Research and development	3,058	2,707	8,585	7,941
General and administrative	42,890	46,496	110,671	112,381
Income from asset sales	(1,862)	(547)	(17,593)	(7,820)
Total operating costs and expenses	526,592	379,742	1,415,301	1,225,489
Operating income (loss) from continuing operations	(28,028)	(13,256)	(142,864)	67,035
Other income (expense):
Interest and dividend income	1,700	778	4,028	2,310
Interest expense	(6,364)	(6,407)	(17,503)	(16,652)
Other	(911)	534	(350)	926
Total other income (expense)	(5,575)	(5,095)	(13,825)	(13,416)
Income (loss) from continuing operations before income taxes	(33,603)	(18,351)	(156,689)	53,619
Income tax provision	(10,478)	2,842	(50,537)	33,740
Income (loss) from continuing operations	(23,125)	(21,193)	(106,152)	19,879
Income (loss) from discontinued operations before income taxes	3,223	2,193	2,705	2,241
Income tax provision	1,897	2,200	2,233	6,113
Income (loss) from discontinued operations	1,326	(7)	472	(3,872)
NET INCOME (LOSS)	$ (21,799)	$ (21,200)	$ (105,680)	$ 16,007
Basic earnings per common share:
Income (loss) from continuing operations (in dollars per share)	$ (0.22)	$ (0.20)	$ (0.99)	$ 0.18
Income (loss) from discontinued operations (in dollars per share)	0.01			(0.04)
Net income (loss) (in dollars per share)	(0.21)	(0.20)	(0.99)	0.14
Diluted earnings per common share:
Income (loss) from continuing operations (in dollars per share)	(0.22)	(0.20)	(0.99)	0.17
Income (loss) from discontinued operations (in dollars per share)	0.01			(0.04)
Net income (loss) (in dollars per share)	$ (0.21)	$ (0.20)	$ (0.99)	$ 0.13
Weighted average shares outstanding (in thousands):
Basic (in shares)	108,572	108,047	108,470	107,970
Diluted (in shares)	108,572	108,047	108,470	108,523
Dividends declared per common share (in dollars per share)	$ 0.7000	$ 0.7000	$ 2.1000	$ 2.0750