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Business Segments and Foreign Operations (Summarized Information By Reportable Segments) (Details)
$ in Thousands
 3 Months Ended 6 Months Ended
Feb. 29, 2016
USD ($)
Feb. 28, 2015
USD ($)
Feb. 29, 2016
USD ($)
item
Feb. 28, 2015
USD ($)
Segment Reporting Information [Line Items]        
Number of reportable segments | item     3  
Net sales $ 94,550 $ 97,331 $ 187,072 $ 193,684
Income from operations 17,906 17,631 35,051 33,224
Depreciation and amortization expense 1,650 1,614 3,311 3,247
Interest income 183 178 331 312
Interest expense 417 275 789 569
Unallocated Corporate [Member]        
Segment Reporting Information [Line Items]        
Income from operations [1] (6,090) (6,201) (11,643) (11,400)
Depreciation and amortization expense [1] 8 8 15 16
Americas [Member]        
Segment Reporting Information [Line Items]        
Net sales 45,542 44,702 89,954 89,475
Income from operations 10,814 10,859 21,674 20,825
Depreciation and amortization expense 1,061 1,032 2,141 2,060
Interest income 1 2 3 5
Interest expense 414 272 783 565
EMEA [Member]        
Segment Reporting Information [Line Items]        
Net sales 35,626 38,679 67,712 73,270
Income from operations 9,413 9,255 16,128 15,635
Depreciation and amortization expense 514 513 1,024 1,055
Interest income 145 117 248 217
Asia-Pacific [Member]        
Segment Reporting Information [Line Items]        
Net sales 13,382 13,950 29,406 30,939
Income from operations 3,769 3,718 8,892 8,164
Depreciation and amortization expense 67 61 131 116
Interest income 37 59 80 90
Interest expense $ 3 $ 3 $ 6 $ 4
[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.