XML 97 R83.htm IDEA: XBRL DOCUMENT v3.20.2

Note 19 - Major Customers, Suppliers and Related Information (Details Textual) - Revenue Benchmark [Member] - Customer Concentration Risk [Member]	12 Months Ended
	Sep. 30, 2020	Sep. 30, 2019
Number Of Major Customers	1	2
One Customer [Member]
Concentration Risk, Percentage	63.00%
Customer 1 [Member]
Concentration Risk, Percentage		37.00%
Customer 2 [Member]
Concentration Risk, Percentage		10.00%

X

- Definition

Represents the number of major customers accounting for 10% or more of the specified concentration risk benchmark, which includes, but not limited to, sales revenue, accounts receivable, etc.

+ References

No definition available.

+ Details

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Namespace Prefix:	gnss_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

X

- Definition

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.

+ References

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=120311839&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=121572278&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=121572278&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

+ Details

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Namespace Prefix:	us-gaap_
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Period Type:	duration

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- Details

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- Details

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X

- Details

Name:	srt_MajorCustomersAxis=gnss_OneCustomerMember
Namespace Prefix:
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X

- Details

Name:	srt_MajorCustomersAxis=gnss_Customer1Member
Namespace Prefix:
Data Type:	na
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X

- Details

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Namespace Prefix:
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