Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Mar. 31, 2022	Sep. 30, 2021
Current assets:
Cash and cash equivalents, including restricted cash of $522 and $1,907, respectively	$ 208,355	$ 448,462
Accounts receivable, less allowance for uncollectible amounts of $3,141 and $3,664, respectively	575,174	523,051
Inventories	484,933	419,971
Income taxes receivable	17,415	12,071
Other current assets	45,513	61,168
Total current assets	1,331,390	1,464,723
Property, plant and equipment, net	923,651	950,569
Goodwill	796,028	805,333
Intangible assets, net	522,502	559,289
Deferred income tax assets	13,798	14,066
Other assets	303,175	297,024
Total assets	3,890,544	4,091,004
Current liabilities:
Current portion of long-term debt	459	728
Accounts payable	188,543	170,909
Income taxes payable	17,701	11,481
Accrued liabilities	162,343	183,139
Total current liabilities	369,046	366,257
Long-term debt, less current portion	728,247	734,122
Deferred income tax liabilities	155,092	157,936
Other liabilities	586,280	617,908
Total liabilities	1,838,665	1,876,223
Commitments and contingencies (Note 21)
Stockholders' equity:
Preferred stock, par value $0.003 per share, 10,000 shares authorized, no shares issued
Common stock, par value $0.001455 per share, 150,000 shares authorized, 72,960 shares issued	106	106
Additional paid-in capital	287,766	261,735
Accumulated other comprehensive losses	(63,137)	(65,619)
Deferred compensation	6,678	7,949
Retained earnings	2,656,590	2,600,513
Stockholders' equity	2,888,003	2,804,684
Treasury stock at cost, 11,427 shares and 9,702 shares, respectively	(829,446)	(581,954)
Treasury stock held for deferred compensation, at cost, 140 shares and 167 shares, respectively	(6,678)	(7,949)
Total stockholders' equity	2,051,879	2,214,781
Total liabilities and stockholders' equity	$ 3,890,544	$ 4,091,004