Condensed Consolidated Balance Sheets (Unaudited) (USD $) In Thousands, unless otherwise specified	Oct. 31, 2013	Jul. 31, 2013
Current Assets
Cash and cash equivalents	$ 13,537	$ 12,470
Accounts receivable, net of allowance for doubtful accounts of $555 and $495, respectively	12,730	14,425
Inventories	16,029	14,825
Income taxes refundable	0	254
Prepaid expenses	1,381	996
Deferred income taxes	1,887	1,827
Total current assets	45,564	44,797
Property and equipment, net	8,998	8,962
Intangible and other assets
Goodwill	12,228	12,155
Other intangible assets, net	11,603	11,715
Deferred income taxes	3,405	3,557
Patents, net	1,440	1,411
Cash value of life insurance	96	96
Total assets	83,334	82,693
Current Liabilities
Accounts payable	3,109	3,237
Accrued expenses	3,203	3,486
Income taxes payable	81	0
Deferred revenue	1,288	1,288
Total current liabilities	7,681	8,011
Long-Term Liabilities
Deferred revenue	14,208	14,530
Total long-term liabilities	14,208	14,530
Total liabilities	21,889	22,541
Commitments and contingencies (Note 8)
Stockholders' Equity
Common stock at October 31, 2013 and July 31, 2013, $0.001 par value, 50,000,000 shares authorized; 25,296,106 and 25,292,960 shares issued and outstanding, respectively	25	25
Additional paid-in capital	27,673	27,489
Retained earnings	34,031	33,097
Accumulated other comprehensive loss:
Foreign currency translation adjustment	(284)	(459)
Total stockholders' equity	61,445	60,152
Total liabilities and stockholders' equity	$ 83,334	$ 82,693