Consolidated Balance Sheets (USD $) In Thousands, unless otherwise specified	Sep. 30, 2014	Sep. 30, 2013
Current assets:
Cash and cash equivalents	$ 47,490	$ 41,320
Marketable securities	32,898	47,006
Accounts receivable, net	28,576	26,829
Inventories	31,247	26,140
Deferred tax assets	3,221	3,174
Other	4,249	4,493
Total current assets	147,681	148,962
Marketable securities, long-term	11,541	17,389
Property, equipment and improvements, net	13,231	13,910
Identifiable intangible assets, net	6,785	9,728
Goodwill	103,398	103,569
Deferred tax assets	7,383	6,151
Other	440	221
Total assets	290,459	299,930
Current liabilities:
Accounts payable	10,451	8,906
Accrued compensation	8,133	7,410
Accrued warranty	862	1,063
Other	2,308	3,911
Total current liabilities	21,754	21,290
Income taxes payable	2,724	3,903
Deferred tax liabilities	272	415
Other noncurrent liabilities	411	79
Total liabilities	25,161	25,687
Commitments and Contingencies (see Notes 16 & 17)
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; 30,703,895 and 30,264,224 shares issued	307	303
Additional paid-in capital	218,689	211,982
Retained earnings	117,816	116,065
Accumulated other comprehensive loss	(18,277)	(15,590)
Treasury stock, at cost, 6,313,937 and 4,708,965 shares	(53,237)	(38,517)
Total stockholders' equity	265,298	274,243
Total liabilities and stockholders' equity	$ 290,459	$ 299,930