Condensed Consolidated Balance Sheets (Unaudited) (USD $) In Thousands, unless otherwise specified	Jan. 31, 2015	Jul. 31, 2014
Current assets
Cash and cash equivalents	$ 8,866	$ 15,443
Accounts receivable, net of allowance for doubtful accounts of $646 and $722, respectively	13,188	14,641
Inventories	16,537	15,134
Prepaid expenses	1,075	1,223
Deferred income taxes	2,233	2,042
Total current assets	41,899	48,483
Property and equipment, net	10,337	8,785
Intangible and other assets
Goodwill	17,429	12,738
Other intangible assets, net	19,574	11,911
Deferred income taxes	0	1,219
Patents, net	1,415	1,472
Deferred financing costs, net	122	0
Cash value of life insurance	107	107
Total assets	90,883	84,715
Current liabilities
Accounts payable	3,672	2,530
Accrued expenses	2,788	2,845
Income taxes payable	405	386
Contingent acquisition liability	561	0
Current maturities of long-term debt	550	0
Deferred revenue	1,288	1,288
Total current liabilities	9,264	7,049
Long-Term liabilities
Borrowings under term loan facility	2,200	0
Deferred income taxes	130	0
Contingent acquisition liability	2,000	0
Deferred revenue	12,598	13,242
Total long-term liabilities	16,928	13,242
Total liabilities	26,192	20,291
Commitments and contingencies (Note 9)
Stockholders' equity
Common stock at January 31, 2015 and July 31, 2014, $0.001 par value, 50,000,000 shares authorized; 25,566,332 and 25,364,608 shares issued and outstanding, respectively	26	25
Additional paid-in capital	28,956	28,594
Retained earnings	37,880	36,160
Accumulated other comprehensive loss:
Foreign currency translation adjustment	(2,171)	(355)
Total stockholders' equity	64,691	64,424
Total liabilities and stockholders' equity	$ 90,883	$ 84,715