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Note 4 - Leases - Balance Sheet Information (Details) - USD ($) | Mar. 31, 2021 | Mar. 31, 2020 | Apr. 01, 2019
--- | --- | --- | ---
Operating lease right-of-use asset |  |  | $ 63,000
Total right-of-use assets | $ 486,730 | $ 559,347 |
Finance lease liability, current | 102,689 | 100,728 |
Total lease liabilities | 373,096 | 520,511 |
Other Noncurrent Assets [Member] |  |  |
Operating lease right-of-use asset | 4,850 | 51,535 |
Property, Plant and Equipment, Net [Member] |  |  |
Finance lease right-of-use asset | 481,880 | 507,812 |
Accounts Payable and Accrued Liabilities [Member] |  |  |
Operating lease liability, current | 4,850 | 47,431 |
Current Portion of Financing Lease [Member] |  |  |
Finance lease liability, current | 102,689 | 100,728 |
Other Noncurrent Liabilities [Member] |  |  |
Operating lease liability, non-current |  | 4,104 |
Finance lease liability, non-current | $ 265,557 | $ 368,248 |

X
- Definition Present value of lessee's discounted obligation for lease payments from operating and finance lease. + References No definition available. + Details
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- Definition Amount of lessee's right to use underlying asset under operating and finance lease. + References No definition available. + Details
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- Definition Present value of lessee's discounted obligation for lease payments from finance lease, classified as current. + 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 (b) -URI http://asc.fasb.org/extlink&oid=123391704&loc=SL77918627-209977 + Details
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- Definition Present value of lessee's discounted obligation for lease payments from finance lease, classified as noncurrent. + 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 (b) -URI http://asc.fasb.org/extlink&oid=123391704&loc=SL77918627-209977 + Details
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- Definition Amount, after accumulated amortization, of right-of-use asset from finance 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=123391704&loc=SL77918627-209977 + Details
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- Definition Present value of lessee's discounted obligation for lease payments from operating lease, classified as current. + 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 (b) -URI http://asc.fasb.org/extlink&oid=123391704&loc=SL77918627-209977 + Details
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- 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=123391704&loc=SL77918627-209977 + Details
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