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SUMMARY OF SIGNIFICANT ACCOUNTING AND FINANCIAL REPORTING POLICIES: (Details) - USD ($) | 12 Months Ended |
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Apr. 30, 2022 | Apr. 30, 2021
SUMMARY OF SIGNIFICANT ACCOUNTING AND FINANCIAL REPORTING POLICIES |  |
Restricted cash | $ 0 |
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 | $ 118,000 | $ 84,000

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