CONDENSED CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Mar. 31, 2017	Sep. 30, 2016
ASSETS
Cash	$ 435,208	$ 145,427
Accounts receivable, net	81,630	113,091
Income tax receivable	2,889	6,095
Inventories of materials and supplies, net	101,721	109,925
Prepaid expenses, deferred costs and other current assets	12,498	18,504
Total current assets	633,946	393,042
Property and equipment, net	4,143,390	4,127,696
Other receivables	11,831	11,831
Deferred income taxes	165	165
Deferred costs and other assets	7,313	7,058
Total assets	4,796,645	4,539,792
LIABILITIES AND SHAREHOLDERS' EQUITY
Accounts payable	23,693	25,299
Accrued liabilities	9,747	7,868
Interest payable	8,395	7,096
Income tax payable	8,582	8,294
Deferred credits and other liabilities	1,636	799
Total current liabilities	52,053	49,356
Long-term debt	1,298,067	1,227,919
Deferred income taxes	1,599	1,202
Deferred credits	7,910	0
Other	35,994	30,929
Total long-term liabilities	1,343,570	1,260,050
Commitments and contingencies (Note 9)
Preferred stock, no par value, 1,000 shares authorized, none outstanding	0	0
Common stock, $1.00 par value, 180,000 shares authorized with 80,516 issued (Note 10) and outstanding as of March 31, 2017 and 180,000 shares authorized and 64,799 shares issued and outstanding as of September 30, 2016	80,516	64,799
Paid-in capital	410,855	237,542
Retained earnings	2,909,684	2,929,839
Accumulated other comprehensive loss	(33)	(1,794)
Total shareholders' equity	3,401,022	3,230,386
Total liabilities and shareholders' equity	$ 4,796,645	$ 4,539,792