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
-Paragraph 42
-URI http://asc.fasb.org/extlink&oid=123359005&loc=d3e9054-108599

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 275
-SubTopic 10
-Section 50
-Paragraph 18
-URI http://asc.fasb.org/extlink&oid=99393423&loc=d3e6351-108592

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 825
-SubTopic 10
-Section 50
-Paragraph 20
-URI http://asc.fasb.org/extlink&oid=123594938&loc=d3e13531-108611

Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 825
-SubTopic 10
-Section 50
-Paragraph 21
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=123594938&loc=d3e13537-108611

Reference 5: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 275
-SubTopic 10
-Section 50
-Paragraph 20
-URI http://asc.fasb.org/extlink&oid=99393423&loc=d3e6404-108592

Name:	us-gaap_ConcentrationRiskPercentage1
Namespace Prefix:	us-gaap_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

Summary of Significant Accounting Policies - Concentration of Credit Risk (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Feb. 28, 2022	Feb. 28, 2021	Feb. 28, 2022	Feb. 28, 2021	Aug. 31, 2021
Concentration Risk [Line Items]
Cash and cash equivalents	$ 3,712		$ 3,712		$ 4,833
Net revenues \| Customer concentration \| Top Ten Customers
Concentration Risk [Line Items]
Concentration risk (as a percent)	91.00%	85.00%	88.00%	82.00%
United States \| U.S. Dollars
Concentration Risk [Line Items]
Cash and cash equivalents	$ 1,258		$ 1,258		1,162
Taiwan \| U.S. Dollars
Concentration Risk [Line Items]
Cash and cash equivalents	2,052		2,052		3,405
Taiwan \| New Taiwan Dollars
Concentration Risk [Line Items]
Cash and cash equivalents	34		34		47
Taiwan \| Other currencies
Concentration Risk [Line Items]
Cash and cash equivalents	$ 368		$ 368		$ 219
Few Select Markets Including The Netherlands Ireland Taiwan Japan The United States Germany And India \| Net revenues \| Geographic concentration
Concentration Risk [Line Items]
Concentration risk (as a percent)	85.00%	83.00%	86.00%	78.00%