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Business Segments and Foreign Operations (Summarized Information Of Reportable Segments) (Details) (USD $)
In Thousands, unless otherwise specified
 3 Months Ended 6 Months Ended
Feb. 28, 2014
Feb. 28, 2013
Feb. 28, 2014
Feb. 28, 2013
Segment Reporting Information [Line Items]        
Net sales $ 94,184 $ 86,712 $ 189,725 $ 181,976
Income from operations 15,252 14,435 32,019 30,300
Depreciation and amortization expense 1,471 1,235 2,849 2,438
Interest income 158 195 289 257
Interest expense 226 176 441 301
Americas [Member]
        
Segment Reporting Information [Line Items]        
Net sales 45,208 40,217 89,270 85,572
Income from operations 9,878 9,301 19,902 19,468
Depreciation and amortization expense 1,090 951 2,158 1,869
Interest income 1   2 1
Interest expense 223 174 436 297
EMEA [Member]
        
Segment Reporting Information [Line Items]        
Net sales 38,111 32,773 74,627 68,358
Income from operations 8,499 7,323 17,434 15,608
Depreciation and amortization expense 316 237 563 477
Interest income 113 142 214 178
Asia-Pacific [Member]
        
Segment Reporting Information [Line Items]        
Net sales 10,865 13,722 25,828 28,046
Income from operations 1,914 3,037 5,941 5,801
Depreciation and amortization expense 61 46 113 89
Interest income 44 53 73 78
Interest expense 3 2 5 4
Corporate [Member]
        
Segment Reporting Information [Line Items]        
Income from operations (5,039) [1] (5,226) [1] (11,258) [1] (10,577) [1]
Depreciation and amortization expense $ 4 [1] $ 1 [1] $ 15 [1] $ 3 [1]
[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.