Consolidated Balance Sheets (USD $) In Thousands	Sep. 30, 2011	Sep. 30, 2010
Current assets:
Cash and cash equivalents	$ 54,684	$ 50,943
Marketable securities	51,524	36,634
Accounts receivable, net	26,433	24,090
Inventories	23,986	26,550
Deferred tax assets	2,610	3,344
Other	2,997	2,141
Total current assets	162,234	143,702
Marketable securities, long-term	1,603	0
Property, equipment and improvements, net	15,370	16,396
Identifiable intangible assets, net	14,360	19,851
Goodwill	86,012	86,210
Deferred tax assets	3,771	320
Other	545	486
Total assets	283,895	266,965
Current liabilities:
Accounts payable	6,492	7,449
Accrued compensation	7,758	5,850
Deferred payment on acquisition	0	2,914
Other	5,236	5,384
Total current liabilities	19,486	21,597
Income taxes payable	2,620	2,838
Deferred tax liabilities	813	1,457
Other noncurrent liabilities	260	517
Total liabilities	23,179	26,409
Commitments and contingencies (see Notes 15 & 16)
Stockholders' equity:
Preferred stock, $.01 par value; 2,000,000 shares authorized; none issued and outstanding
Common stock, $.01 par value; 60,000,000 shares authorized; 29,100,577 and 28,666,311 shares issued	291	287
Additional paid-in capital	194,580	185,427
Retained earnings	102,668	91,649
Accumulated other comprehensive loss	(10,457)	(9,589)
Treasury stock, at cost, 3,471,930 and 3,584,215 shares	(26,366)	(27,218)
Total stockholders' equity	260,716	240,556
Total liabilities and stockholders' equity	$ 283,895	$ 266,965