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UNAUDITED CONDENSED CONSOLIDATED BALANCE SHEETS - USD ($)
$ in Thousands
Mar. 31, 2024
Sep. 30, 2023
Current Assets:    
Cash and cash equivalents $ 193,636 $ 257,174
Restricted cash 68,547 59,064
Short-term investments 83,390 93,600
Accounts receivable, net of allowance of $2,769 and $2,688, respectively 431,681 404,188
Inventories of materials and supplies, net 107,210 94,227
Prepaid expenses and other, net 64,316 97,727
Assets held-for-sale 0 645
Total current assets 948,780 1,006,625
Investments 274,446 264,947
Property, plant and equipment, net 2,993,825 2,921,695
Other Noncurrent Assets:    
Goodwill 45,653 45,653
Intangible assets, net 57,360 60,575
Operating lease right-of-use assets 59,730 50,400
Other assets, net 45,054 32,061
Total other noncurrent assets 207,797 188,689
Total assets 4,424,848 4,381,956
Current Liabilities:    
Accounts payable 158,296 130,852
Dividends payable 42,047 25,194
Accrued liabilities 238,494 262,885
Total current liabilities 438,837 418,931
Noncurrent Liabilities:    
Long-term debt, net 545,441 545,144
Deferred income taxes 502,088 517,809
Other 135,408 128,129
Total noncurrent liabilities 1,182,937 1,191,082
Commitments and Contingencies (Note 11)
Shareholders' Equity:    
Common stock, $0.10 par value, 160,000,000 shares authorized, 112,222,865 shares issued as of March 31, 2024 and September 30, 2023, and 98,752,018 and 99,426,526 shares outstanding as of March 31, 2024 and September 30, 2023, respectively 11,222 11,222
Preferred stock, no par value, 1,000,000 shares authorized, no shares issued 0 0
Additional paid-in capital 502,586 525,369
Retained earnings 2,786,495 2,707,715
Accumulated other comprehensive loss (7,713) (7,981)
Treasury stock, at cost, 13,470,847 shares and 12,796,339 shares as of March 31, 2024 and September 30, 2023, respectively (489,516) (464,382)
Total shareholders’ equity 2,803,074 2,771,943
Total liabilities and shareholders' equity $ 4,424,848 $ 4,381,956