Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Jun. 30, 2016	Sep. 30, 2015
ASSETS
Cash	$ 198,974	$ 113,983
Accounts receivable, net	166,534	311,514
Income tax receivable	8,194	8,705
Inventories of materials and supplies, net	113,161	137,998
Prepaid expenses, deferred costs and other current assets	10,040	33,735
Total current assets	496,903	605,935
Property and equipment, net	4,198,069	4,172,132
Other receivables	11,831	11,831
Deferred income taxes	150	150
Deferred costs and other assets	8,174	11,285
Total assets	4,715,127	4,801,333
LIABILITIES AND SHAREHOLDERS' EQUITY
Accounts payable	43,252	70,161
Accrued liabilities	12,496	23,572
Dividends payable	0	16,164
Interest payable	15,506	7,704
Income tax payable	13,530	13,906
Deferred credits and other liabilities	1,486	3,941
Total current liabilities	86,270	135,448
Long-term debt	1,374,780	1,678,268
Deferred income taxes	1,148	1,658
Deferred credits	0	800
Other	30,409	37,989
Total long-term liabilities	1,406,337	1,718,715
Commitments and contingencies
Preferred stock, no par value, 1,000 shares authorized, none outstanding	0	0
Common stock, $1.00 par value, 180,000 shares authorized with 64,798 issued and outstanding as of June 30, 2016 and 180,000 shares authorized and 64,654 shares issued and outstanding as of September 30, 2015	64,798	64,654
Paid-in capital	235,043	213,096
Retained earnings	2,925,589	2,670,148
Accumulated other comprehensive income	(2,910)	(728)
Total shareholders' equity	3,222,520	2,947,170
Total liabilities and shareholders' equity	$ 4,715,127	$ 4,801,333