Condensed Consolidated Balance Sheets (Unaudited) - USD ($) $ in Thousands	Dec. 31, 2015	Sep. 30, 2015
Current assets:
Cash and cash equivalents	$ 52,190	$ 45,018
Marketable securities	50,202	47,191
Accounts receivable, net	24,931	27,788
Inventories	30,115	31,877
Deferred tax assets	0	3,252
Receivable from sale of business	2,952	0
Other	4,734	3,435
Current assets of discontinued operations	0	1,624
Total current assets	165,124	160,185
Marketable securities, long-term	11,524	13,626
Property, equipment and improvements, net	14,156	14,339
Identifiable intangible assets, net	5,061	2,648
Goodwill	110,244	100,183
Deferred tax assets	7,927	6,255
Receivable from sale of business	1,930	0
Other	300	250
Non-current assets of discontinued operations	0	2,874
Total assets	316,266	300,360
Current liabilities:
Accounts payable	6,904	6,673
Income taxes payable	151	828
Accrued compensation	5,248	10,156
Accrued warranty	968	1,014
Contingent consideration on acquired business	833	0
Other	4,201	3,037
Current liabilities of discontinued operations	0	1,481
Total current liabilities	18,305	23,189
Income taxes payable	1,349	1,546
Deferred tax liabilities	720	135
Contingent consideration on acquired business	9,567	0
Other non-current liabilities	809	457
Non-current liabilities of discontinued operations	0	95
Total liabilities	$ 30,750	$ 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; 32,229,363 and 31,534,198 shares issued	322	315
Additional paid-in capital	233,544	227,367
Retained earnings	130,854	124,404
Accumulated other comprehensive loss	(24,524)	(22,613)
Treasury stock, at cost, 6,489,587 and 6,487,248 shares	(54,680)	(54,535)
Total stockholders' equity	285,516	274,938
Total liabilities and stockholders' equity	$ 316,266	$ 300,360