Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Dec. 31, 2020	Sep. 30, 2020
Current assets:
Cash and cash equivalents, including restricted cash of $1,908 and $3,497, respectively	$ 201,881	$ 153,270
Accounts receivable, less allowance for uncollectible amounts of $7,499 and $8,359, respectively	509,721	537,987
Inventories	445,463	437,943
Income taxes receivable	34,092	28,879
Other current assets	55,397	52,786
Total current assets	1,246,554	1,210,865
Property, plant and equipment, net	986,030	997,415
Goodwill	821,609	808,252
Intangible assets, net	619,721	606,711
Deferred income tax assets	13,970	14,658
Other assets	271,621	265,435
Total assets	3,959,505	3,903,336
Current liabilities:
Current portion of long-term debt	1,623	101,634
Accounts payable	158,568	134,242
Income taxes payable	11,987	4,662
Accrued liabilities	155,932	151,794
Total current liabilities	328,110	392,332
Long-term debt, less current portion	745,464	736,849
Deferred income tax liabilities	168,181	163,573
Other liabilities	654,288	617,905
Total liabilities	1,896,043	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	244,394	231,936
Accumulated other comprehensive losses	(80,316)	(89,794)
Deferred compensation	9,485	9,222
Retained earnings	2,464,373	2,427,905
Stockholders' equity	2,638,042	2,579,375
Treasury stock at cost, 9,992 shares and 10,277 shares, respectively	(565,095)	(577,476)
Treasury stock held for deferred compensation, at cost, 201 shares and 199 shares, respectively	(9,485)	(9,222)
Total stockholders' equity	2,063,462	1,992,677
Total liabilities and stockholders' equity	$ 3,959,505	$ 3,903,336