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Business Segments and Foreign Operations (Summarized Information By Reportable Segments) (Details)
$ in Thousands
 3 Months Ended
Nov. 30, 2016
USD ($)
item
Nov. 30, 2015
USD ($)
Segment Reporting Information [Line Items]    
Number of reportable segments | item 3  
Net sales $ 89,248 $ 92,522
Income from operations 16,516 17,145
Depreciation and amortization expense 1,620 1,661
Interest income 147 148
Interest expense 531 372
Unallocated Corporate [Member]    
Segment Reporting Information [Line Items]    
Income from operations [1] (6,397) (5,553)
Depreciation and amortization expense [1] 8 7
Americas [Member]    
Segment Reporting Information [Line Items]    
Net sales 42,840 44,412
Income from operations 10,749 10,860
Depreciation and amortization expense 1,049 1,080
Interest income 2 2
Interest expense 527 369
EMEA [Member]    
Segment Reporting Information [Line Items]    
Net sales 30,257 32,086
Income from operations 7,178 6,715
Depreciation and amortization expense 501 510
Interest income 80 103
Asia-Pacific [Member]    
Segment Reporting Information [Line Items]    
Net sales 16,151 16,024
Income from operations 4,986 5,123
Depreciation and amortization expense 62 64
Interest income 65 43
Interest expense $ 4 $ 3
[1] Unallocated corporate expenses are general corporate overhead expenses not directly attributable to any one of the operating 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.