CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Sep. 30, 2020	Sep. 30, 2019
Current assets:
Cash and cash equivalents	$ 257,354	$ 188,495
Accounts receivable, less allowance for doubtful accounts of $583 at September 30, 2020, and $2,377 at September 30, 2019	134,023	146,113
Inventories	159,134	145,278
Prepaid expenses and other current assets	26,558	28,670
Total current assets	577,069	508,556
Property, plant and equipment, net	362,067	276,818
Goodwill	718,647	710,071
Other intangible assets, net	670,964	754,044
Deferred income taxes	7,713	6,566
Other long-term assets	40,007	5,711
Total assets	2,376,467	2,261,766
Current liabilities:
Accounts payable	49,254	54,529
Current portion of long-term debt	10,650	13,313
Accrued expenses, income taxes payable and other current liabilities	121,442	103,618
Total current liabilities	181,346	171,460
Long-term debt, net of current portion	910,764	928,463
Deferred income taxes	112,212	121,993
Other long-term liabilities	97,832	59,473
Total liabilities	1,302,154	1,281,389
Commitments and contingencies (Note 20)
Stockholders’ equity:
Common Stock Authorized: 200,000 shares, $0.001 par value; Issued: 39,914 shares at September 30, 2020 and 39,592 shares at September 30, 2019	40	40
Capital in excess of par value of common stock	1,019,803	988,980
Retained earnings	553,718	461,501
Accumulated other comprehensive loss	(14,104)	(23,238)
Treasury stock at cost, 10,834 shares at September 30, 2020 and 10,491 shares at September 30, 2019	(485,144)	(446,906)
Total stockholders’ equity	1,074,313	980,377
Total liabilities and stockholders’ equity	$ 2,376,467	$ 2,261,766