Condensed Consolidated Balance Sheets (Unaudited) (USD $) In Thousands, unless otherwise specified	Jan. 31, 2012	Jul. 31, 2011
Current Assets
Cash and cash equivalents	$ 13,930	$ 18,399
Accounts receivable, net of allowance for doubtful accounts of $297 and $282, respectively	10,516	11,148
Inventories	13,393	12,082
Income taxes refundable	31	0
Prepaid expenses	1,199	961
Deferred income taxes	935	792
Assets held for sale	0	868
Total current assets	40,004	44,250
Property and equipment, net	8,961	8,561
Intangible and other assets
Goodwill	10,661	10,660
Other intangible assets, net	11,535	11,792
Deferred income taxes (need Tax provision info )	4,551	4,915
Patents, net	1,146	1,050
Cash value of life insurance	82	82
Total assets	76,940	81,310
Current Liabilities
Current maturities of long-term debt	741	1,053
Accounts payable	2,343	1,567
Accrued expenses	2,610	3,193
Income taxes payable (need Tax provision info )	0	6,233
Deferred revenue	1,288	540
Total current liabilities	6,982	12,586
Long-Term Liabilities
Deferred revenue	16,461	18,060
Total long-term liabilities	16,461	18,060
Total liabilities	23,443	30,646
Commitments and contingencies (Note 9)
Stockholders' Equity
Common stock at January 31, 2012 and July 31, 2011, $0.001 par value, 50,000,000 shares authorized; 25,177,546 and 24,970,884 shares issued and outstanding, respectively	25	25
Additional paid-in capital	25,886	25,598
Retained earnings	27,590	24,952
Accumulated other comprehensive income:
Foreign currency translation adjustment	(4)	89
Total stockholders' equity	53,497	50,664
Total liabilities and stockholders' equity	$ 76,940	$ 81,310