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v3.19.3.a.u2

Note J - Commitments and Contingencies (Details Textual) - USD ($) | 6 Months Ended |
--- | --- | ---
Oct. 31, 2019 | Oct. 31, 2018 | Apr. 30, 2019
Operating Lease, Percent of Facilities Leased | 81.00% |  |
Operating Leases, Rent Expense, Total | $ 3,500,000 | $ 3,300,000 |
Operating Lease, Weighted Average Discount Rate, Percent |  |  | 4.73%
Letters of Credit Outstanding, Amount | $ 500,000 |  |
Minimum [Member] |  |  |
Lessee, Operating Lease, Term of Contract | 3 years |  |
Maximum [Member] |  |  |
Lessee, Operating Lease, Term of Contract | 5 years |  |

X
- Definition The percent of facilities leased under operating leases. + References No definition available. + Details
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X
- Definition Amount of rent expense incurred for leased assets, including but not limited to, furniture and equipment, that is not directly or indirectly associated with the manufacture, sale or creation of a product or product line. + References No definition available. + Details
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X
- Definition Term of lessee'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 20 -Section 50 -Paragraph 3 -Subparagraph (a)(3) -URI http://asc.fasb.org/extlink&oid=77888426&loc=SL77918673-209980 + Details
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X
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X
- Definition Weighted average discount rate for operating lease calculated at point in time. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 50 -Paragraph 4 -Subparagraph (g)(4) -URI http://asc.fasb.org/extlink&oid=77888426&loc=SL77918686-209980 Reference 2: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 55 -Paragraph 53 -URI http://asc.fasb.org/extlink&oid=77888399&loc=SL77918982-209971 + Details
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- Details
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