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Operating Segments (Details) - USD ($)
$ in Thousands
3 Months Ended
Oct. 31, 2017
Oct. 31, 2016
Jul. 31, 2017
Segment Reporting Information      
Assets $ 206,917   $ 212,575
Total Sales 66,646 $ 66,612  
Corporate Expenses (7,325) (5,855)  
Income from Operations 3,916 3,046  
Total Other Income, Net (77) (367)  
Income before Income Taxes 3,839 2,679  
Income Taxes (789) (670)  
Net Income 3,050 2,009  
Business to Business Products      
Segment Reporting Information      
Assets 64,864   65,337
Segment Net Sales 27,087 27,473  
Segment Income (Loss) 8,876 9,408  
Retail and Wholesale Products      
Segment Reporting Information      
Assets 90,320   90,508
Segment Net Sales 39,559 39,139  
Segment Income (Loss) 2,365 $ (507)  
Unallocated Assets      
Segment Reporting Information      
Assets $ 51,733   $ 56,730