UNAUDITED CONDENSED CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Dec. 31, 2022	Sep. 30, 2022
Current Assets:
Cash and cash equivalents	$ 229,186	$ 232,131
Restricted cash	42,472	36,246
Short-term investments	118,457	117,101
Accounts receivable, net of allowance of $6,242 and $2,975, respectively	512,681	458,713
Inventories of materials and supplies, net	90,761	87,957
Prepaid expenses and other, net	83,506	66,463
Assets held-for-sale	1,551	4,333
Total current assets	1,078,614	1,002,944
Investments	220,892	218,981
Property, plant and equipment, net	2,942,059	2,960,809
Other Noncurrent Assets:
Goodwill	45,653	45,653
Intangible assets, net	65,398	67,154
Operating lease right-of-use assets	38,539	39,064
Other assets, net	20,693	20,926
Total other noncurrent assets	170,283	172,797
Total assets	4,411,848	4,355,531
Current Liabilities:
Accounts payable	145,784	126,966
Dividends payable	51,540	26,693
Accrued liabilities	272,247	241,151
Total current liabilities	469,571	394,810
Noncurrent Liabilities:
Long-term debt, net	542,932	542,610
Deferred income taxes	537,264	537,712
Other	116,136	113,387
Noncurrent liabilities - discontinued operations	800	1,540
Total noncurrent liabilities	1,197,132	1,195,249
Commitments and Contingencies (Note 12)
Shareholders' Equity:
Common stock, $0.10 par value, 160,000,000 shares authorized, 112,222,865 shares issued as of December 31, 2022 and September 30, 2022, and 104,898,566 and 105,293,662 shares outstanding as of December 31, 2022 and September 30, 2022, respectively	11,222	11,222
Preferred stock, no par value, 1,000,000 shares authorized, no shares issued	0	0
Additional paid-in capital	512,928	528,278
Retained earnings	2,494,106	2,473,572
Accumulated other comprehensive loss	(11,816)	(12,072)
Treasury stock, at cost, 7,324,299 shares and 6,929,203 shares as of December 31, 2022 and September 30, 2022, respectively	(261,295)	(235,528)
Total shareholders’ equity	2,745,145	2,765,472
Total liabilities and shareholders' equity	$ 4,411,848	$ 4,355,531
Common stock, shares outstanding (in shares)	104,898,566	105,293,662

Carrying value as of the balance sheet date of liabilities incurred (and for which invoices have typically been received) and payable to vendors for goods and services received that are used in an entity's business. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).

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- Definition

Carrying value as of the balance sheet date of obligations incurred and payable, pertaining to costs that are statutory in nature, are incurred on contractual obligations, or accumulate over time and for which invoices have not yet been received or will not be rendered. Examples include taxes, interest, rent and utilities. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).