Condensed Consolidated Balance Sheets (Unaudited) (USD $) In Thousands, unless otherwise specified	Apr. 30, 2015	Jul. 31, 2014
Current assets
Cash and cash equivalents	$ 10,448	$ 15,443
Accounts receivable, net of allowance for doubtful accounts of $590 and $722, respectively	13,809	14,641
Inventories	16,870	15,134
Prepaid expenses	1,572	1,223
Deferred income taxes	2,384	2,042
Total current assets	45,083	48,483
Property and equipment, net	10,594	8,785
Intangible and other assets
Goodwill	17,048	12,738
Other intangible assets, net	20,276	11,911
Deferred income taxes	0	1,219
Patents, net	1,432	1,472
Deferred financing costs, net	88	0
Cash value of life insurance	107	107
Total assets	94,628	84,715
Current liabilities
Accounts payable	4,334	2,530
Accrued expenses	3,260	2,845
Income taxes payable	870	386
Contingent acquisition liability	750	0
Current maturities of long-term debt	550	0
Deferred revenue	1,288	1,288
Total current liabilities	11,052	7,049
Long-Term liabilities
Borrowings under term loan facility	2,063	0
Deferred income taxes	500	0
Contingent acquisition liability	2,180	0
Deferred revenue	12,276	13,242
Total long-term liabilities	17,019	13,242
Total liabilities	28,071	20,291
Commitments and contingencies (Note 9)
Stockholders' equity
Common stock at April 30, 2015 and July 31, 2014, $0.001 par value, 50,000,000 shares authorized; 25,571,975 and 25,364,608 shares issued and outstanding, respectively	26	25
Additional paid-in capital	29,216	28,594
Retained earnings	39,108	36,160
Accumulated other comprehensive loss:
Foreign currency translation adjustment	(1,793)	(355)
Total stockholders' equity	66,557	64,424
Total liabilities and stockholders' equity	$ 94,628	$ 84,715