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Note 6 - Leases (Details Textual)	Jul. 31, 2019 USD ($) a	Feb. 29, 2016 USD ($) a	Jul. 31, 2022 a	Sep. 30, 2020 USD ($)	Mar. 31, 2020 a
Fenner Valley Farms LLC Lease Agreement [Member]
Lessor, Operating Lease, Term of Contract (Year)		99 years
Area of Real Estate Property (Acre) | a		2,100
Long-term Debt, Total		$ 12,000,000.0
Lessor, Operating Lease, Payment to be Received, Remainder of Fiscal Year				$ 420,000
Lessor, Operating Lease, Payment to be Received, Year One				420,000
Lessor, Operating Lease, Payment to be Received, Year Two				420,000
Lessor, Operating Lease, Payment to be Received, Year Three				420,000
Lessor, Operating Lease, Payment to be Received, Year Four				420,000
SoCal Hemp JV LLC Lease Agreement [Member]
Lessor, Operating Lease, Term of Contract (Year)	5 years
Area of Real Estate Property (Acre) | a	1,280				242
Lessor, Operating Lease, Payment to be Received, Remainder of Fiscal Year				121,000
Lessor, Operating Lease, Number of Renewals	3
Lessor, Operating Lease, Renewal Term (Year)	5 years
Lessor, Operating Lease Rental Income Per Acre of Leased Property	$ 500
Lessor, Operating Lease, Payment to be Received, Year One				121,000
Lessor, Operating Lease, Payment to be Received, Year Two				121,000
Lessor, Operating Lease, Payment to be Received, Year Three				121,000
Lessor, Operating Lease, Payment to be Received, Year Four				$ 121,000
SoCal Hemp JV LLC Lease Agreement [Member] | Forecast [Member]
Area of Real Estate Property (Acre) | a			8,320
Minimum [Member]
Lessee, Operating Lease, Remaining Lease Term (Month)				6 months
Maximum [Member]
Lessee, Operating Lease, Remaining Lease Term (Month)				14 months
Maximum [Member] | SoCal Hemp JV LLC Lease Agreement [Member]
Area of Real Estate Property (Acre) | a	9,600

X

- Definition

The number of renewals the lessee is allowed under the operating lease of the lessor.

+ References

No definition available.

+ Details

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Balance Type:	na
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X

- Definition

The amount of rental income per acre of leased property under operating lease of lessor.

+ References

No definition available.

+ Details

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X

- Definition

Area of a real estate property.

+ References

No definition available.

+ Details

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X

- Definition

Remaining lease term of operating lease, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 842
-SubTopic 20
-Section 50
-Paragraph 3
-Subparagraph (a)(1)
-URI http://asc.fasb.org/extlink&oid=121609121&loc=SL77918673-209980

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X

- Definition

Amount of lease payment to be received by lessor for operating lease in fourth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 842
-SubTopic 30
-Section 50
-Paragraph 12
-URI http://asc.fasb.org/extlink&oid=121576215&loc=SL77919396-209981

+ Details

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Period Type:	instant

X

- Definition

Amount of lease payment to be received by lessor for operating lease in next fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 842
-SubTopic 30
-Section 50
-Paragraph 12
-URI http://asc.fasb.org/extlink&oid=121576215&loc=SL77919396-209981

+ Details

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Namespace Prefix:	us-gaap_
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Balance Type:	debit
Period Type:	instant

X

- Definition

Amount of lease payment to be received by lessor for operating lease in remainder of current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 842
-SubTopic 30
-Section 50
-Paragraph 12
-URI http://asc.fasb.org/extlink&oid=121576215&loc=SL77919396-209981

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X

- Definition

Amount of lease payment to be received by lessor for operating lease in third fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 842
-SubTopic 30
-Section 50
-Paragraph 12
-URI http://asc.fasb.org/extlink&oid=121576215&loc=SL77919396-209981

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
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Period Type:	instant

X

- Definition

Amount of lease payment to be received by lessor for operating lease in second fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 842
-SubTopic 30
-Section 50
-Paragraph 12
-URI http://asc.fasb.org/extlink&oid=121576215&loc=SL77919396-209981

+ Details

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X

- Definition

Term of lessor's operating lease renewal, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 842
-SubTopic 30
-Section 50
-Paragraph 3
-Subparagraph (a)(3)
-URI http://asc.fasb.org/extlink&oid=121576215&loc=SL77919359-209981

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	instant

X

- Definition

Term of lessor's operating lease, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 842
-SubTopic 30
-Section 50
-Paragraph 3
-Subparagraph (a)(3)
-URI http://asc.fasb.org/extlink&oid=121576215&loc=SL77919359-209981

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	instant

X

- Definition

Amount of cash inflow from lease payment, classified as operating activity.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 842
-SubTopic 30
-Section 45
-Paragraph 5
-URI http://asc.fasb.org/extlink&oid=121561866&loc=SL77919320-209978

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 842
-SubTopic 30
-Section 45
-Paragraph 7
-URI http://asc.fasb.org/extlink&oid=121561866&loc=SL77919327-209978

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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

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- Details

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X

- Details

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