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SUMMARY OF SIGNIFICANT ACCOUNTING AND FINANCIAL REPORTING POLICIES: (Details) - USD ($)	12 Months Ended
	Apr. 30, 2021	Apr. 30, 2020
SUMMARY OF SIGNIFICANT ACCOUNTING AND FINANCIAL REPORTING POLICIES
Property, Plant and Equipment, Depreciation Methods	Depreciation of investment assets (other than land) is provided principally by the straight-line method at various rates calculated to amortize the book values of the respective assets over their estimated useful lives, which generally are 10 to 40 years for buildings and improvements.
Lease expected term (in years)	1 year
Operating lease, right-of-use assets	$ 84,000	$ 109,000

X

- Definition

The term pertaining to lease expected in term of right of assets and liabilities.

+ References

No definition available.

+ Details

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- References

No definition available.

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X

- Definition

Amount of lessee's right to use underlying asset under operating lease.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 842
-SubTopic 20
-Section 45
-Paragraph 1
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=121603541&loc=SL77918627-209977

+ Details

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Balance Type:	debit
Period Type:	instant

X

- Definition

Description of the methodology for computing depreciation for classes of depreciable assets.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 360
-SubTopic 10
-Section 50
-Paragraph 1
-Subparagraph (d)
-URI http://asc.fasb.org/extlink&oid=6391035&loc=d3e2868-110229

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