CONSOLIDATED CONDENSED STATEMENTS OF INCOME - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
	Dec. 31, 2015	Dec. 31, 2014
Operating revenues:
Drilling - U.S. Land	$ 369,805	$ 890,047
Drilling - Offshore	41,880	69,887
Drilling - International Land	72,194	96,673
Other	3,968	4,180
Total operating revenues	487,847	1,060,787
Operating costs and other:
Operating costs, excluding depreciation	276,644	559,463
Depreciation	142,129	138,232
General and administrative	32,074	32,736
Research and development	2,919	4,158
Income from asset sales	(4,589)	(4,173)
Total operating costs and expenses	449,177	730,416
Operating income from continuing operations	38,670	330,371
Other income (expense):
Interest and dividend income	733	295
Interest expense	(4,524)	(590)
Other	(261)	314
Total other income (expense)	(4,052)	19
Income from continuing operations before income taxes	34,618	330,390
Income tax provision	18,720	126,767
Income from continuing operations	15,898	203,623
Income (loss) from discontinued operations before income taxes	104	(15)
Income (loss) from discontinued operations	104	(15)
NET INCOME	$ 16,002	$ 203,608
Basic earnings per common share:
Income from continuing operations (in dollars per share)	$ 0.15	$ 1.87
Net income (in dollars per share)	0.15	1.87
Diluted earnings per common share:
Income from continuing operations (in dollars per share)	0.15	1.86
Net income (in dollars per share)	$ 0.15	$ 1.86
Weighted average shares outstanding (in thousands):
Basic (in shares)	107,852	107,973
Diluted (in shares)	108,409	108,843
Dividends declared, per share (in dollars per share)	$ 0.6875	$ 0.6875