Discontinued Operations - Additional Information (Detail) - USD ($)	3 Months Ended	9 Months Ended
Jan. 31, 2019	Jan. 31, 2018	Jan. 31, 2019	Jan. 31, 2018	Jun. 27, 2018
Gain (Loss) on Sale of Properties			$ 472,866
Club Fortune Casino [Member]
Disposal Group, Including Discontinued Operation, Consideration					$ 14,600,000
Goodwill, Impairment Loss	$ 0	$ 0	115,128	$ 0
Disposal Group Including Discontinued Operation Loss On Reclassification Held For Sale	$ 0	$ 0	$ (84,872)	$ 0

Amount of loss from the write-down of an asset representing the future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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