Consolidated Balance Sheets (USD $) In Thousands, unless otherwise specified	Sep. 30, 2013	Sep. 30, 2012
Current assets:
Cash and cash equivalents	$ 41,320	$ 60,246
Marketable securities	47,006	58,372
Accounts receivable, net	26,829	24,634
Inventories	26,140	24,435
Deferred tax assets	3,174	3,389
Other	4,835	2,493
Total current assets	149,304	173,569
Marketable securities, long-term	17,389	2,016
Property, equipment and improvements, net	13,910	15,157
Identifiable intangible assets, net	9,728	10,629
Goodwill	103,569	86,209
Deferred tax assets	5,832	5,010
Other	221	494
Total assets	299,953	293,084
Current liabilities:
Accounts payable	8,906	6,040
Income taxes payable	0	1,269
Accrued compensation	7,410	5,744
Accrued warranty	1,063	1,021
Other	3,911	4,118
Total current liabilities	21,290	18,192
Income taxes payable	3,903	3,294
Deferred tax liabilities	415	630
Other noncurrent liabilities	79	111
Total liabilities	25,687	22,227
Commitments and Contingencies (see Note 15 & 16)
Stockholders' equity:
Preferred stock, $.01 par value; 2,000,000 shares authorized; none issued and outstanding	0	0
Common stock, $.01 par value; 60,000,000 shares authorized; 30,264,224 and 29,268,788 shares issued	303	293
Additional paid-in capital	211,982	199,495
Retained earnings	116,088	110,283
Accumulated other comprehensive loss	(15,590)	(13,725)
Treasury stock, at cost, 4,708,965 and 3,356,453 shares	(38,517)	(25,489)
Total stockholders' equity	274,266	270,857
Total liabilities and stockholders' equity	$ 299,953	$ 293,084