CONSOLIDATED BALANCE SHEETS (UNAUDITED) - USD ($) $ in Thousands	Dec. 31, 2018	Sep. 30, 2018
Current assets:
Cash and cash equivalents	$ 208,880	$ 352,921
Accounts receivable, less allowance for doubtful accounts of $1,840 at December 31, 2018, and $1,900 at September 30, 2018	138,580	75,886
Inventories	138,377	71,926
Prepaid expenses and other current assets	39,310	22,048
Total current assets	525,147	522,781
Property, plant and equipment, net	262,447	111,403
Goodwill	706,108	101,083
Other intangible assets, net	871,220	35,202
Deferred income taxes	5,567	5,840
Other long-term assets	10,239	4,664
Total assets	2,380,728	780,973
Current liabilities:
Accounts payable	54,012	18,171
Current portion of long-term debt	10,650	0
Accrued expenses, income taxes payable and other current liabilities	100,400	82,983
Total current liabilities	165,062	101,154
Long-term debt, net of current portion, less prepaid debt issuance cost of $20,170 at December 31, 2018	1,034,180	0
Deferred income taxes	154,706	81
Other long-term liabilities	18,613	13,046
Total liabilities	1,372,561	114,281
Commitments and contingencies (Note 10)
Stockholders' equity:
Common Stock: Authorized: 200,000,000 shares, $0.001 par value; Issued: 39,283,803 shares at December 31, 2018, and 35,862,465 shares at September 30, 2018	39	36
Capital in excess of par value of common stock	964,885	622,498
Retained earnings	472,585	471,673
Accumulated other comprehensive income	6,713	4,539
Treasury stock at cost, 10,394,664 shares at December 31, 2018, and 10,356,147 shares at September 30, 2018	(436,055)	(432,054)
Total stockholders' equity	1,008,167	666,692
Total liabilities and stockholders' equity	$ 2,380,728	$ 780,973