UNAUDITED CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Jun. 30, 2016	Sep. 30, 2015
Current assets:
Cash and cash equivalents	$ 243,087	$ 354,190
Accounts receivable, less allowance for doubtful accounts of $1,260 at June 30, 2016, and $1,224 at September 30, 2015	55,840	49,405
Inventories, net	74,645	70,678
Prepaid expenses and other current assets	17,798	12,840
Deferred income taxes	0	7,395
Total current assets	391,370	494,508
Property, plant and equipment, net	105,457	93,743
Goodwill	95,711	40,442
Other intangible assets, net	59,583	4,565
Deferred income taxes	16,342	12,212
Other long-term assets	13,411	15,004
Total assets	681,874	660,474
Current liabilities:
Accounts payable	13,840	15,448
Accrued expenses, income taxes payable and other current liabilities	33,997	36,446
Current portion of long-term debt	9,844	8,750
Total current liabilities	57,681	60,644
Long-term debt, net of current portion	147,656	155,313
Deferred income taxes	64	76
Other long-term liabilities	17,500	15,477
Total liabilities	222,901	231,510
Commitments and contingencies (Note 10)
Stockholders' equity:
Common Stock: Authorized: 200,000,000 shares, $0.001 par value; Issued: 33,797,792 shares at June 30, 2016, and 33,489,181 shares at September 30, 2015	34	33
Capital in excess of par value of common stock	512,939	495,673
Retained earnings	314,511	284,088
Accumulated other comprehensive income (loss)	4,084	(6,090)
Treasury stock at cost, 9,725,587 shares at June 30, 2016, and 9,041,678 shares at September 30, 2015	(372,595)	(344,740)
Total stockholders' equity	458,973	428,964
Total liabilities and stockholders' equity	$ 681,874	$ 660,474

Carrying value as of the balance sheet date of liabilities incurred (and for which invoices have typically been received) and payable to vendors for goods and services received that are used in an entity's business. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).

Name:	us-gaap_AccountsPayableCurrent
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Amount due from customers or clients, within one year of the balance sheet date (or the normal operating cycle, whichever is longer), for goods or services (including trade receivables) that have been delivered or sold in the normal course of business, reduced to the estimated net realizable fair value by an allowance established by the entity of the amount it deems uncertain of collection.