Condensed Consolidated Balance Sheets (Unaudited) (USD $) In Thousands, unless otherwise specified	Oct. 31, 2014	Jul. 31, 2014
Current assets
Cash and cash equivalents	$ 20,440	$ 15,443
Accounts receivable, net of allowance for doubtful accounts of $700 and $722, respectively	12,134	14,641
Inventories	15,184	15,134
Prepaid expenses	1,184	1,223
Deferred income taxes	2,041	2,042
Total current assets	50,983	48,483
Property and equipment, net	8,640	8,785
Intangible and other assets
Goodwill	12,648	12,738
Other intangible assets, net	11,674	11,911
Deferred income taxes	1,219	1,219
Patents, net	1,425	1,472
Cash value of life insurance	107	107
Total assets	86,696	84,715
Current liabilities
Accounts payable	3,282	2,530
Accrued expenses	3,938	2,845
Income taxes payable	419	386
Deferred revenue	1,288	1,288
Total current liabilities	8,927	7,049
Long-Term liabilities
Deferred revenue	12,920	13,242
Total long-term liabilities	12,920	13,242
Total liabilities	21,847	20,291
Commitments and contingencies (Note 9)
Stockholders' equity
Common stock at October 31, 2014 and July 31, 2014, $0.001 par value, 50,000,000 shares authorized; 25,363,693 and 25,364,608 shares issued and outstanding, respectively	25	25
Additional paid-in capital	28,757	28,594
Retained earnings	36,927	36,160
Accumulated other comprehensive loss:
Foreign currency translation adjustment	(860)	(355)
Total stockholders' equity	64,849	64,424
Total liabilities and stockholders' equity	$ 86,696	$ 84,715