Operating Segment (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jan. 31, 2013	Jan. 31, 2012	Jan. 31, 2013	Jan. 31, 2012	Jul. 31, 2012
Segment Reporting Information
Assets	$ 176,418		$ 176,418		$ 174,267
Total Sales	61,122	60,203	122,539	119,785
Corporate Expenses	(5,602)	(4,656)	(11,238)	(9,081)
Capacity Rationalization Charges	(50)	0	(62)	0
Income from Operations	3,385	4,829	9,784	6,625
Total Other Expense, Net	(354)	(550)	(696)	(873)
Income before Income Taxes	3,031	4,279	9,088	5,752
Income Taxes	(885)	(1,040)	(2,490)	(1,438)
Net Income	2,146	3,239	6,598	4,314
Business to Business Products
Segment Reporting Information
Assets	45,471		45,471		44,250
Segment Net Sales	21,715	21,303	43,497	42,237
Segment Income	7,101	6,427	14,624	13,867
Retail and Wholesale Products
Segment Reporting Information
Assets	80,130		80,130		79,658
Segment Net Sales	39,407	38,900	79,042	77,548
Segment Income	1,936	3,058	6,460	1,839
Unallocated Assets
Segment Reporting Information
Assets	$ 50,817		$ 50,817		$ 50,359