CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Sep. 30, 2021	Sep. 30, 2020
Current assets:
Cash and cash equivalents	$ 185,979	$ 257,354
Accounts receivable, less allowance for credit losses of $527 at September 30, 2021, and $583 at September 30, 2020	150,099	134,023
Inventories	173,464	159,134
Prepaid expenses and other current assets	25,439	26,558
Total current assets	534,981	577,069
Property, plant and equipment, net	354,771	362,067
Goodwill	576,902	718,647
Other intangible assets, net	625,434	670,964
Deferred income taxes	6,813	7,713
Other long-term assets	51,984	40,007
Total assets	2,150,885	2,376,467
Current liabilities:
Accounts payable	52,748	49,254
Current portion of long-term debt	13,313	10,650
Accrued expenses and other current liabilities	139,797	121,442
Total current liabilities	205,858	181,346
Long-term debt, net of current portion	903,031	910,764
Deferred income taxes	74,930	112,212
Other long-term liabilities	88,129	97,832
Total liabilities	1,271,948	1,302,154
Commitments and contingencies (Note 19)
Stockholders’ equity:
Common Stock Authorized: 200,000 shares, $0.001 par value; Issued: 40,221 shares at September 30, 2021 and 39,914 shares at September 30, 2020	40	40
Capital in excess of par value of common stock	1,052,869	1,019,803
Retained earnings	431,968	553,718
Accumulated other comprehensive income (loss)	4,791	(14,104)
Treasury stock at cost, 11,795 shares at September 30, 2021 and 10,834 shares at September 30, 2020	(610,731)	(485,144)
Total stockholders’ equity	878,937	1,074,313
Total liabilities and stockholders’ equity	$ 2,150,885	$ 2,376,467