Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Mar. 31, 2021	Sep. 30, 2020
Current assets:
Cash and cash equivalents, including restricted cash of $1,908 and $3,497, respectively	$ 287,595	$ 153,270
Accounts receivable, less allowance for uncollectible amounts of $7,522 and $8,359, respectively	588,064	537,987
Inventories	422,321	437,943
Income taxes receivable	30,459	28,879
Other current assets	39,723	52,786
Total current assets	1,368,162	1,210,865
Property, plant and equipment, net	965,205	997,415
Goodwill	807,974	808,252
Intangible assets, net	584,948	606,711
Deferred income tax assets	14,873	14,658
Other assets	279,610	265,435
Total assets	4,020,772	3,903,336
Current liabilities:
Current portion of long-term debt	1,398	101,634
Accounts payable	162,715	134,242
Income taxes payable	12,945	4,662
Accrued liabilities	164,350	151,794
Total current liabilities	341,408	392,332
Long-term debt, less current portion	736,095	736,849
Deferred income tax liabilities	164,068	163,573
Other liabilities	645,900	617,905
Total liabilities	1,887,471	1,910,659
Commitments and contingencies (Note 22)
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	257,006	231,936
Accumulated other comprehensive losses	(103,441)	(89,794)
Deferred compensation	9,103	9,222
Retained earnings	2,522,384	2,427,905
Stockholders' equity	2,685,158	2,579,375
Treasury stock at cost, 9,454 shares and 10,277 shares, respectively	(542,754)	(577,476)
Treasury stock held for deferred compensation, at cost, 192 shares and 199 shares, respectively	(9,103)	(9,222)
Total stockholders' equity	2,133,301	1,992,677
Total liabilities and stockholders' equity	$ 4,020,772	$ 3,903,336