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Equity Transactions and Stock Option Plan (Tables)
 9 Months Ended
Jan. 31, 2019
Share-based Compensation [Abstract]  
Summary of Stock Grant Activity Under our Share-Based Payment Plans
A summary of stock option activity under our share-based payment plan for the three months ended January 31, 2019 is presented below:
 
 
 
Options
 
 
Weighted

Average

Excersice

Price
 
 
Weighted

Average

Remaining

Contractual

Term (Years)
 
 
Aggregate

Intrinsic

Value
 
Outstanding at April 30, 2018
 
 
676,000
 
 
$
1.10
 
 
 
 
 
 
 
 
 
Granted
 
 
-
 
 
 
 
 
 
 
 
 
 
 
 
 
Exercised
 
 
-
 
 
 
 
 
 
 
 
 
 
 
 
 
Forfeited or expired
 
 
-
 
 
 
 
 
 
 
 
 
 
 
 
 
Outstanding at January 31, 2019
 
 
676,000
 
 
$
1.10
 
 
 
3.5
 
 
$
923,800
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Exercisable at January 31, 2019
 
 
676,000
 
 
$
1.10
 
 
 
3.5
 
 
$
923,800
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Available for grant at January 31, 2019
 
 
507,611