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Business Segments and Foreign Operations (Summarized Information Of Reportable Segments) (Details) (USD $)
In Thousands, unless otherwise specified
 3 Months Ended 9 Months Ended
May 31, 2014
May 31, 2013
May 31, 2014
May 31, 2013
Segment Reporting Information [Line Items]        
Net sales $ 95,650 $ 93,103 $ 285,375 $ 275,079
Income from operations 15,103 14,958 47,122 45,258
Depreciation and amortization expense 1,488 1,327 4,337 3,765
Interest income 136 105 425 362
Interest expense 268 182 709 483
Unallocated Corporate [Member]
        
Segment Reporting Information [Line Items]        
Income from operations (4,758) [1] (5,250) [1] (16,016) [1] (15,828) [1]
Depreciation and amortization expense 5 [1] 2 [1] 20 [1] 5 [1]
Americas [Member]
        
Segment Reporting Information [Line Items]        
Net sales 45,096 47,677 134,366 133,249
Income from operations 9,991 11,829 29,893 31,297
Depreciation and amortization expense 1,035 1,030 3,193 2,895
Interest income 3   5 1
Interest expense 266 179 702 476
EMEA [Member]
        
Segment Reporting Information [Line Items]        
Net sales 36,678 32,758 111,305 101,116
Income from operations 7,306 6,175 24,740 21,783
Depreciation and amortization expense 384 240 947 721
Interest income 104 74 318 252
Asia-Pacific [Member]
        
Segment Reporting Information [Line Items]        
Net sales 13,876 12,668 39,704 40,714
Income from operations 2,564 2,204 8,505 8,006
Depreciation and amortization expense 64 55 177 144
Interest income 29 31 102 109
Interest expense $ 2 $ 3 $ 7 $ 7
[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.