For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
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Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
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Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
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Reference 5: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 275
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-URI https://asc.fasb.org/extlink&oid=99393423&loc=d3e6404-108592

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Period Type:	duration

Summary of Significant Accounting Policies - Concentration of Credit Risk (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	May 31, 2022	May 31, 2021	May 31, 2022	May 31, 2021	Aug. 31, 2021
Concentration Risk [Line Items]
Cash and cash equivalents	$ 3,023		$ 3,023		$ 4,833
Net revenues \| Customer concentration \| Top Ten Customers
Concentration Risk [Line Items]
Concentration risk (as a percent)	86.00%	89.00%	88.00%	78.00%
United States \| U.S. Dollars
Concentration Risk [Line Items]
Cash and cash equivalents	$ 1,256		$ 1,256		1,162
Taiwan \| U.S. Dollars
Concentration Risk [Line Items]
Cash and cash equivalents	1,279		1,279		3,405
Taiwan \| New Taiwan Dollars
Concentration Risk [Line Items]
Cash and cash equivalents	44		44		47
Taiwan \| Other currencies
Concentration Risk [Line Items]
Cash and cash equivalents	$ 444		$ 444		$ 219
Few Select Markets, Including the United States, Japan, Germany, Taiwan and Netherlands \| Net revenues \| Geographic concentration
Concentration Risk [Line Items]
Concentration risk (as a percent)	88.00%	82.00%	88.00%	82.00%