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Segment Information (Consolidated Revenues From Continuing Operations By Country) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Aug. 31, 2012	Aug. 31, 2011	Aug. 31, 2010
Segment Reporting Information [Line Items]
Sales	$ 170,456	$ 160,804	$ 136,874
United States [Member]
Segment Reporting Information [Line Items]
Sales	121,328	115,709	97,286
Japan [Member]
Segment Reporting Information [Line Items]
Sales	19,440	17,263	13,935
Canada [Member]
Segment Reporting Information [Line Items]
Sales	8,574	7,080	6,157
United Kingdom [Member]
Segment Reporting Information [Line Items]
Sales	5,341	5,143	5,751
Australia [Member]
Segment Reporting Information [Line Items]
Sales	3,992	5,058	4,545
China/Singapore [Member]
Segment Reporting Information [Line Items]
Sales	2,512	2,185	1,900
Mexico/Central America [Member]
Segment Reporting Information [Line Items]
Sales	913	837	590
Indonesia [Member]
Segment Reporting Information [Line Items]
Sales	705	610	461
Thailand [Member]
Segment Reporting Information [Line Items]
Sales	693	729	505
Denmark/Scandinavia [Member]
Segment Reporting Information [Line Items]
Sales	660	725	568
Korea [Member]
Segment Reporting Information [Line Items]
Sales	607	861	1,028
India [Member]
Segment Reporting Information [Line Items]
Sales	576	515	422
Brazil [Member]
Segment Reporting Information [Line Items]
Sales	509	567	460
Malaysia [Member]
Segment Reporting Information [Line Items]
Sales	458	429	362
Others [Member]
Segment Reporting Information [Line Items]
Sales	$ 4,148	$ 3,093	$ 2,904

X

- Definition

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.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 225

-SubTopic 10

-Section S99

-Paragraph 2

-Subparagraph (SX 210.5-03.1)

-URI http://asc.fasb.org/extlink&oid=6880815&loc=d3e20235-122688



Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 03

-Paragraph 1

-Article 5

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

X

- Details

Name:	us-gaap_SegmentReportingInformationLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration