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Stockholders' Equity (Tables)
 12 Months Ended
Apr. 30, 2020
Stockholders' Equity Note [Abstract]  
Schedule of Restricted Stock Unit Activity
A summary of the Company’s Restricted Stock Unit activity during the year ended April 30, 2020 is presented below:

Number of SharesWeighted Average Grant Price
Restricted Stock Units
Balance outstanding at April 30, 2019—  $—  
Granted658,675  5.67
Vested(15,000) 6.89
Forfeited(500) 5.18
Balance outstanding at April 30, 2020643,175  5.64
Schedule of Warrants
A summary of the Company’s warrant activity during the year ended April 30, 2020 is presented below:
Warrants
Number of Shares
Weighted
Average
Exercise
Price
Weighted
Average
Remaining
Contractual
Term
Aggregate
Intrinsic
Value
Balance Outstanding, April 30, 2019731,152  $5.28  3.29$413,296  
Granted
—  —  —  —  
Exercised
(164,929) 2.05  —  —  
Surrendered
—  —  —  —  
Expired
—  —  —  —  
Balance Outstanding, April 30, 2020566,223  $6.22  3.17$950,100  
Exercisable, April 30, 2020566,223  $6.22  3.17$950,100  
Schedule of All Warrants and Exercisable Warrants
ALL WARRANTS
EXERCISABLE WARRANTS
Exercise
Price
Weighted
Average
Exercise
Price
Outstanding
No. of
Warrants
Weighted
Average
Exercise
Price
Weighted
Average
Remaining Life
In Years
Exercisable
No. of
Warrants
$4.89  $4.89  50,000  $4.89  3.8550,000  
$5.85  $5.85  92,049  $5.85  3.8292,049  
$6.00  $6.00  200,000  $6.00  3.85200,000  
$6.87  $6.87  224,174  $6.87  2.24224,174  
566,223  566,223  
ALL OPTIONS
EXERCISABLE OPTIONS
Exercise
Price
Weighted
Average
Exercise
Price
Outstanding
No. of
Options
Weighted
Average
Exercise
Price
Weighted
Average
Remaining Life
In Years
Exercisable
No. of
Options
$1.57 to $2.10
$2.00  561,724  $2.00  0.71561,724  
$2.28 to $2.76
$2.30  374,446  $2.30  0.41374,446  
$3.24 to $4.38
$3.89  327,730  $3.87  1.60275,063  
$4.50 to $5.20
$4.94  677,277  $4.94  2.54226,125  
$5.95 to $6.28
$6.07  79,917  $6.07  2.2026,639  
$7.17 to $7.55
$7.41  549,639  $7.32  3.58223,880  
$8.57 to $9.07
$8.97  164,166  $8.97  2.6954,722  
Options only2,734,899  1,742,599  
Schedule of Assumptions Used to Value Stock Options The following table summarizes the assumptions the Company utilized to record compensation expense for stock options granted to employees during the period ended.
 
April 30,
 
20202019
Expected life (years)
3.53.5
Expected volatility
57.0 %50.1 %
Risk-free interest rate
0.24 %2.63 %
Dividend yield
0.00 %0.00 %
Expected forfeiture rate
n/an/a
Schedule of Stock Option Activity A summary of the Company’s stock option activity for employees and directors during the year ended April 30, 2020, is presented below:
Options
Number of
Shares
Weighted
Average
Exercise
Price
Weighted
Average
Remaining
Contractual
Term
Aggregate
Intrinsic
Value
Balance Outstanding, April 30, 20193,408,154  $4.44  2.90$6,880,644  
Granted
156,900  5.18  —  —  
Exercised
(624,346) 3.17  —  —  
Forfeited
(205,809) 7.37  —  —  
Expired
—  —  —  —  
Balance Outstanding, April 30, 20202,734,899  $4.62  1.97$9,146,198  
Exercisable, April 30, 20201,742,599  $3.71  1.48$7,366,936