CONDENSED CONSOLIDATED BALANCE SHEETS (USD $)	Apr. 30, 2013	Jul. 31, 2012
Current assets:
Cash and cash equivalents	$ 30,669,000	$ 30,186,000
Accounts receivable, net of allowance for doubtful accounts of $691 at April 30 and $1,041 at July 31	52,109,000	47,977,000
Inventories:
Raw materials	23,272,000	21,084,000
Work-in-process	6,772,000	6,476,000
Finished goods	22,893,000	19,195,000
Total inventories	52,937,000	46,755,000
Deferred income taxes	4,448,000	3,799,000
Prepaid expenses and other current assets	4,466,000	3,321,000
Income taxes receivable	554,000	1,854,000
Total current assets	145,183,000	133,892,000
Property and equipment, net	45,431,000	43,022,000
Intangible assets, net	74,165,000	71,311,000
Goodwill	208,176,000	183,655,000
Prepaid acquisition	8,300,000
Other assets	3,109,000	2,932,000
Total assets	484,364,000	434,812,000
Current liabilities:
Current portion of long-term debt	10,000,000	10,000,000
Accounts payable	14,551,000	12,345,000
Compensation payable	11,100,000	14,312,000
Accrued expenses	10,137,000	10,370,000
Deferred revenue	10,472,000	8,114,000
Total current liabilities	56,260,000	55,141,000
Long-term debt	95,000,000	80,000,000
Deferred income taxes	23,636,000	19,894,000
Acquisition payable	255,000	2,537,000
Other long-term liabilities	1,258,000	1,304,000
Stockholders' equity:
Preferred Stock, par value $1.00 per share; authorized 1,000,000 shares; none issued
Common Stock, par value $.10 per share; authorized 75,000,000 shares; April 30 - 30,014,849 shares issued and 27,346,692 shares outstanding; July 31 - 29,997,898 shares issued and 27,100,729 shares outstanding	3,001,000	3,000,000
Additional paid-in capital	133,709,000	127,338,000
Retained earnings	195,071,000	167,539,000
Accumulated other comprehensive income	8,196,000	8,175,000
Treasury Stock, at cost; April 30 - 2,668,157 shares; July 31 - 2,897,169 shares	(32,022,000)	(30,116,000)
Total stockholders' equity	307,955,000	275,936,000
Total liabilities and stockholders' equity	$ 484,364,000	$ 434,812,000