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Business Segments and Foreign Operations (Summarized Information By Reportable Segments) (Details)
$ in Thousands
 3 Months Ended
Nov. 30, 2018
USD ($)
item
Nov. 30, 2017
USD ($)
Segment Reporting Information [Line Items]    
Number of reportable segments | item 3  
Net sales $ 101,282 $ 97,597
Income from operations 16,401 17,136
Depreciation and amortization expense 1,925 1,917
Interest income 51 133
Interest expense 710 841
Unallocated Corporate [Member]    
Segment Reporting Information [Line Items]    
Income from operations [1] (7,017) (6,350)
Depreciation and amortization expense [1] 52 192
Americas Segment [Member]    
Segment Reporting Information [Line Items]    
Net sales 47,791 46,163
Income from operations 11,302 11,030
Depreciation and amortization expense 1,131 1,094
Interest income 6 1
Interest expense 708 839
EMEA Segments [Member]    
Segment Reporting Information [Line Items]    
Net sales 38,745 35,028
Income from operations 8,375 7,836
Depreciation and amortization expense 672 559
Interest income 18 119
Asia-Pacific Segment [Member]    
Segment Reporting Information [Line Items]    
Net sales 14,746 16,406
Income from operations 3,741 4,620
Depreciation and amortization expense 70 72
Interest income 27 13
Interest expense $ 2 $ 2
[1] Unallocated corporate expenses are general corporate overhead expenses not directly attributable to any one of the business segments. These expenses are reported separate from the Company's identified segments and are included in Selling, General and Administrative expenses on the Company's condensed consolidated statements of operations.