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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, 2015		Feb. 28, 2014		Feb. 28, 2015 item		Feb. 28, 2014
Segment Reporting Information [Line Items]
Number of reportable segments					3us-gaap_NumberOfReportableSegments
Net sales	$ 97,331us-gaap_SalesRevenueNet		$ 94,184us-gaap_SalesRevenueNet		$ 193,684us-gaap_SalesRevenueNet		$ 189,725us-gaap_SalesRevenueNet
Income from operations	17,631us-gaap_OperatingIncomeLoss		15,252us-gaap_OperatingIncomeLoss		33,224us-gaap_OperatingIncomeLoss		32,019us-gaap_OperatingIncomeLoss
Depreciation and amortization expense	1,614us-gaap_DepreciationDepletionAndAmortization		1,471us-gaap_DepreciationDepletionAndAmortization		3,247us-gaap_DepreciationDepletionAndAmortization		2,849us-gaap_DepreciationDepletionAndAmortization
Interest income	178us-gaap_InvestmentIncomeInterest		158us-gaap_InvestmentIncomeInterest		312us-gaap_InvestmentIncomeInterest		289us-gaap_InvestmentIncomeInterest
Interest expense	275us-gaap_InterestExpense		226us-gaap_InterestExpense		569us-gaap_InterestExpense		441us-gaap_InterestExpense
Unallocated Corporate [Member]
Segment Reporting Information [Line Items]
Income from operations	(6,201)us-gaap_OperatingIncomeLoss / us-gaap_ConsolidationItemsAxis = us-gaap_CorporateNonSegmentMember	[1]	(5,039)us-gaap_OperatingIncomeLoss / us-gaap_ConsolidationItemsAxis = us-gaap_CorporateNonSegmentMember	[1]	(11,400)us-gaap_OperatingIncomeLoss / us-gaap_ConsolidationItemsAxis = us-gaap_CorporateNonSegmentMember	[1]	(11,258)us-gaap_OperatingIncomeLoss / us-gaap_ConsolidationItemsAxis = us-gaap_CorporateNonSegmentMember	[1]
Depreciation and amortization expense	8us-gaap_DepreciationDepletionAndAmortization / us-gaap_ConsolidationItemsAxis = us-gaap_CorporateNonSegmentMember	[1]	4us-gaap_DepreciationDepletionAndAmortization / us-gaap_ConsolidationItemsAxis = us-gaap_CorporateNonSegmentMember	[1]	16us-gaap_DepreciationDepletionAndAmortization / us-gaap_ConsolidationItemsAxis = us-gaap_CorporateNonSegmentMember	[1]	15us-gaap_DepreciationDepletionAndAmortization / us-gaap_ConsolidationItemsAxis = us-gaap_CorporateNonSegmentMember	[1]
Americas [Member]
Segment Reporting Information [Line Items]
Net sales	44,702us-gaap_SalesRevenueNet / us-gaap_StatementGeographicalAxis = us-gaap_AmericasMember		45,208us-gaap_SalesRevenueNet / us-gaap_StatementGeographicalAxis = us-gaap_AmericasMember		89,475us-gaap_SalesRevenueNet / us-gaap_StatementGeographicalAxis = us-gaap_AmericasMember		89,270us-gaap_SalesRevenueNet / us-gaap_StatementGeographicalAxis = us-gaap_AmericasMember
Income from operations	10,859us-gaap_OperatingIncomeLoss / us-gaap_StatementGeographicalAxis = us-gaap_AmericasMember		9,878us-gaap_OperatingIncomeLoss / us-gaap_StatementGeographicalAxis = us-gaap_AmericasMember		20,825us-gaap_OperatingIncomeLoss / us-gaap_StatementGeographicalAxis = us-gaap_AmericasMember		19,902us-gaap_OperatingIncomeLoss / us-gaap_StatementGeographicalAxis = us-gaap_AmericasMember
Depreciation and amortization expense	1,032us-gaap_DepreciationDepletionAndAmortization / us-gaap_StatementGeographicalAxis = us-gaap_AmericasMember		1,090us-gaap_DepreciationDepletionAndAmortization / us-gaap_StatementGeographicalAxis = us-gaap_AmericasMember		2,060us-gaap_DepreciationDepletionAndAmortization / us-gaap_StatementGeographicalAxis = us-gaap_AmericasMember		2,158us-gaap_DepreciationDepletionAndAmortization / us-gaap_StatementGeographicalAxis = us-gaap_AmericasMember
Interest income	2us-gaap_InvestmentIncomeInterest / us-gaap_StatementGeographicalAxis = us-gaap_AmericasMember		1us-gaap_InvestmentIncomeInterest / us-gaap_StatementGeographicalAxis = us-gaap_AmericasMember		5us-gaap_InvestmentIncomeInterest / us-gaap_StatementGeographicalAxis = us-gaap_AmericasMember		2us-gaap_InvestmentIncomeInterest / us-gaap_StatementGeographicalAxis = us-gaap_AmericasMember
Interest expense	272us-gaap_InterestExpense / us-gaap_StatementGeographicalAxis = us-gaap_AmericasMember		223us-gaap_InterestExpense / us-gaap_StatementGeographicalAxis = us-gaap_AmericasMember		565us-gaap_InterestExpense / us-gaap_StatementGeographicalAxis = us-gaap_AmericasMember		436us-gaap_InterestExpense / us-gaap_StatementGeographicalAxis = us-gaap_AmericasMember
EMEA [Member]
Segment Reporting Information [Line Items]
Net sales	38,679us-gaap_SalesRevenueNet / us-gaap_StatementGeographicalAxis = us-gaap_EMEAMember		38,111us-gaap_SalesRevenueNet / us-gaap_StatementGeographicalAxis = us-gaap_EMEAMember		73,270us-gaap_SalesRevenueNet / us-gaap_StatementGeographicalAxis = us-gaap_EMEAMember		74,627us-gaap_SalesRevenueNet / us-gaap_StatementGeographicalAxis = us-gaap_EMEAMember
Income from operations	9,255us-gaap_OperatingIncomeLoss / us-gaap_StatementGeographicalAxis = us-gaap_EMEAMember		8,499us-gaap_OperatingIncomeLoss / us-gaap_StatementGeographicalAxis = us-gaap_EMEAMember		15,635us-gaap_OperatingIncomeLoss / us-gaap_StatementGeographicalAxis = us-gaap_EMEAMember		17,434us-gaap_OperatingIncomeLoss / us-gaap_StatementGeographicalAxis = us-gaap_EMEAMember
Depreciation and amortization expense	513us-gaap_DepreciationDepletionAndAmortization / us-gaap_StatementGeographicalAxis = us-gaap_EMEAMember		316us-gaap_DepreciationDepletionAndAmortization / us-gaap_StatementGeographicalAxis = us-gaap_EMEAMember		1,055us-gaap_DepreciationDepletionAndAmortization / us-gaap_StatementGeographicalAxis = us-gaap_EMEAMember		563us-gaap_DepreciationDepletionAndAmortization / us-gaap_StatementGeographicalAxis = us-gaap_EMEAMember
Interest income	117us-gaap_InvestmentIncomeInterest / us-gaap_StatementGeographicalAxis = us-gaap_EMEAMember		113us-gaap_InvestmentIncomeInterest / us-gaap_StatementGeographicalAxis = us-gaap_EMEAMember		217us-gaap_InvestmentIncomeInterest / us-gaap_StatementGeographicalAxis = us-gaap_EMEAMember		214us-gaap_InvestmentIncomeInterest / us-gaap_StatementGeographicalAxis = us-gaap_EMEAMember
Asia-Pacific [Member]
Segment Reporting Information [Line Items]
Net sales	13,950us-gaap_SalesRevenueNet / us-gaap_StatementGeographicalAxis = us-gaap_AsiaPacificMember		10,865us-gaap_SalesRevenueNet / us-gaap_StatementGeographicalAxis = us-gaap_AsiaPacificMember		30,939us-gaap_SalesRevenueNet / us-gaap_StatementGeographicalAxis = us-gaap_AsiaPacificMember		25,828us-gaap_SalesRevenueNet / us-gaap_StatementGeographicalAxis = us-gaap_AsiaPacificMember
Income from operations	3,718us-gaap_OperatingIncomeLoss / us-gaap_StatementGeographicalAxis = us-gaap_AsiaPacificMember		1,914us-gaap_OperatingIncomeLoss / us-gaap_StatementGeographicalAxis = us-gaap_AsiaPacificMember		8,164us-gaap_OperatingIncomeLoss / us-gaap_StatementGeographicalAxis = us-gaap_AsiaPacificMember		5,941us-gaap_OperatingIncomeLoss / us-gaap_StatementGeographicalAxis = us-gaap_AsiaPacificMember
Depreciation and amortization expense	61us-gaap_DepreciationDepletionAndAmortization / us-gaap_StatementGeographicalAxis = us-gaap_AsiaPacificMember		61us-gaap_DepreciationDepletionAndAmortization / us-gaap_StatementGeographicalAxis = us-gaap_AsiaPacificMember		116us-gaap_DepreciationDepletionAndAmortization / us-gaap_StatementGeographicalAxis = us-gaap_AsiaPacificMember		113us-gaap_DepreciationDepletionAndAmortization / us-gaap_StatementGeographicalAxis = us-gaap_AsiaPacificMember
Interest income	59us-gaap_InvestmentIncomeInterest / us-gaap_StatementGeographicalAxis = us-gaap_AsiaPacificMember		44us-gaap_InvestmentIncomeInterest / us-gaap_StatementGeographicalAxis = us-gaap_AsiaPacificMember		90us-gaap_InvestmentIncomeInterest / us-gaap_StatementGeographicalAxis = us-gaap_AsiaPacificMember		73us-gaap_InvestmentIncomeInterest / us-gaap_StatementGeographicalAxis = us-gaap_AsiaPacificMember
Interest expense	$ 3us-gaap_InterestExpense / us-gaap_StatementGeographicalAxis = us-gaap_AsiaPacificMember		$ 3us-gaap_InterestExpense / us-gaap_StatementGeographicalAxis = us-gaap_AsiaPacificMember		$ 4us-gaap_InterestExpense / us-gaap_StatementGeographicalAxis = us-gaap_AsiaPacificMember		$ 5us-gaap_InterestExpense / us-gaap_StatementGeographicalAxis = us-gaap_AsiaPacificMember
[1] UnallocatedFor the Three Months EndedAmericasEMEAAsia-PacificCorporate (1)TotalFebruary 28, 2015:Net sales$ 44,702$ 38,679$ 13,950$ -$ 97,331Income from operations$ 10,859$ 9,255$ 3,718$ (6,201)$ 17,631Depreciation and amortization expense$ 1,032$ 513$ 61$ 8$ 1,614Interest income$ 2$ 117$ 59$ -$ 178Interest expense$ 272$ -$ 3$ -$ 275February 28, 2014:Net sales$ 45,208$ 38,111$ 10,865$ -$ 94,184Income from operations$ 9,878$ 8,499$ 1,914$ (5,039)$ 15,252Depreciation and amortization expense$ 1,090$ 316$ 61$ 4$ 1,471Interest income$ 1$ 113$ 44$ -$ 158Interest expense$ 223$ -$ 3$ -$ 226For the Six Months EndedFebruary 28, 2015:Net sales$ 89,475$ 73,270$ 30,939$ -$ 193,684Income from operations$ 20,825$ 15,635$ 8,164$ (11,400)$ 33,224Depreciation and amortization expense$ 2,060$ 1,055$ 116$ 16$ 3,247Interest income$ 5$ 217$ 90$ -$ 312Interest expense$ 565$ -$ 4$ -$ 569February 28, 2014:Net sales$ 89,270$ 74,627$ 25,828$ -$ 189,725Income from operations$ 19,902$ 17,434$ 5,941$ (11,258)$ 32,019Depreciation and amortization expense$ 2,158$ 563$ 113$ 15$ 2,849Interest income$ 2$ 214$ 73$ -$ 289Interest expense$ 436$ -$ 5$ -$ 441Unallocated 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.

X

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The aggregate expense recognized in the current period that allocates the cost of tangible assets, intangible assets, or depleting assets to periods that benefit from use of the assets.

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Number of segments reported by the entity. A reportable segment is a component of an entity for which there is an accounting requirement to report separate financial information on that component in the entity's financial statements.

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Total revenue from sale of goods and services rendered during the reporting period, in the normal course of business, reduced by sales returns and allowances, and sales discounts.

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