3. Leases (Details - Lease liabilities) - USD ($) $ in Thousands	Jul. 31, 2019	Apr. 30, 2019
Lessee Disclosure [Abstract]
Operating lease liabilities	$ 1,382	$ 0
Operating lease liabilities, less current portion	23,451	$ 0
Total operating lease liabilities	$ 24,833

No definition available.

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- Definition

Present value of lessee's discounted obligation for lease payments from 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 (b)
-URI http://asc.fasb.org/extlink&oid=77888419&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

+ Details

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- Definition

Present value of lessee's discounted obligation for lease payments from operating lease, classified as noncurrent.

+ References

+ Details

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