Condensed Consolidated Balance Sheets (Unaudited) - USD ($) $ in Thousands	Jun. 30, 2016	Sep. 30, 2015
Current assets:
Cash and cash equivalents	$ 61,072	$ 45,018
Marketable securities	63,137	47,191
Accounts receivable, net	28,536	27,788
Inventories	25,957	31,877
Deferred tax assets	0	3,252
Receivable from sale of business	2,982	0
Other	4,338	3,435
Current assets of discontinued operations	0	1,624
Total current assets	186,022	160,185
Marketable securities, long-term	7,321	13,626
Property, equipment and improvements, net	13,557	14,339
Identifiable intangible assets, net	4,423	2,648
Goodwill	109,880	100,183
Deferred tax assets	8,278	6,255
Receivable from sale of business	1,949	0
Other	207	250
Non-current assets of discontinued operations	0	2,874
Total assets	331,637	300,360
Current liabilities:
Accounts payable	8,720	6,673
Income taxes payable	0	828
Accrued compensation	9,769	10,156
Accrued warranty	1,135	1,014
Contingent consideration on acquired business	726	0
Other	3,594	3,037
Current liabilities of discontinued operations	0	1,481
Total current liabilities	23,944	23,189
Income taxes payable	1,431	1,546
Deferred tax liabilities	602	135
Contingent consideration on acquired business	9,861	0
Other non-current liabilities	856	457
Non-current liabilities of discontinued operations	0	95
Total liabilities	36,694	25,422
Contingencies (see Note 11)
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; 32,413,708 and 31,534,198 shares issued	324	315
Additional paid-in capital	236,058	227,367
Retained earnings	137,268	124,404
Accumulated other comprehensive loss	(24,304)	(22,613)
Treasury stock, at cost, 6,453,952 and 6,487,248 shares	(54,403)	(54,535)
Total stockholders' equity	294,943	274,938
Total liabilities and stockholders' equity	$ 331,637	$ 300,360