Condensed Consolidated Statements of Income (Unaudited) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended
	Oct. 31, 2011	Oct. 31, 2010
Condensed Consolidated Statements of Income [Abstract]
NET SALES	$ 73,307	$ 62,104
COST OF SALES	54,126	44,736
Gross Profit	19,181	17,368
DISTRIBUTION EXPENSES	6,137	6,208
SELLING, GENERAL AND ADMINISTRATIVE EXPENSES	6,536	5,600
Operating income	6,508	5,560
OTHER INCOME (EXPENSE):
Interest income		1
Interest expense	(550)	(595)
Other, net	(75)	51
Total other expense, net	(625)	(543)
INCOME FROM CONTINUING OPERATIONS BEFORE INCOME TAXES	5,883	5,017
Provision for income taxes	(2,315)	(1,501)
INCOME FROM CONTINUING OPERATIONS	3,568	3,516
DISCONTINUED OPERATIONS:
Loss from discontinued operations, before income taxes	(43)
Income tax benefit	10
Loss from discontinued operations	(33)
NET INCOME	$ 3,535	$ 3,516
Basic
Income from continuing operations	$ 0.31	$ 0.31
Loss from discontinued operations
Net income	$ 0.31	$ 0.31
Diluted
Income from continuing operations	$ 0.31	$ 0.31
Loss from discontinued operations
Net income	$ 0.31	$ 0.31
WEIGHTED AVERAGE SHARES OUTSTANDING:
Basic	11,348	11,299
Diluted	11,511	11,460