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Stockholders' Equity (Tables)
3 Months Ended 12 Months Ended
Mar. 31, 2021
Dec. 31, 2020
Stockholders' Equity Note [Abstract]    
Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions [Table Text Block]

Expected volatility

 

197.0

%

Expected life of option (in years)

 

5.2

 

Risk free interest rate

 

0.88

%

Expected dividend yield

 

0.0

%

 

December 31,

   

2020

 

2019

Expected volatility

 

188.0

%

 

171.0 – 177.0

%

Expected life of option

 

5.3

 

 

5.0 – 6.3

 

Risk free interest rate

 

0.6

%

 

1.7 – 2.5

%

Expected dividend yield

 

0.0

%

 

0.0

%

Share-based Payment Arrangement, Option, Activity [Table Text Block]
 

Number of
Options

 

Weighted
Average
Exercise
Price

Stock Options:

   

 

 

 

 

Outstanding at January 1, 2021

 

622,036

 

 

$

5.53

Granted

 

25,220

 

 

 

3.20

Forfeited or canceled, during the period

 

(58,134

)

 

 

4.57

Expired, during the period

 

(715

)

 

 

7.00

Outstanding at March 31, 2021

 

588,407

 

 

$

5.52

Exercisable at March 31, 2021

 

434,387

 

 

$

6.46

 

Number
of
Options

 

Weighted
Average
Exercise
Price

Outstanding at January 1, 2020

 

1,021,243

 

 

$

4.82

Granted

 

24,000

 

 

 

0.80

Exercised during period

 

 

 

 

Forfeited or canceled, during the period

 

(421,777

)

 

 

3.52

Expired, during the period

 

(1,430

)

 

 

10.50

Outstanding at December 31, 2020

 

622,036

 

 

$

5.53

Exercisable at December 31, 2020

 

479,702

 

 

$

6.28

Schedule of stock-based compensation expense
 

Three Months Ended
March 31,

   

2021

 

2020

Cost of revenue

 

$

182

 

$

373

Sales and marketing expense

 

 

7

 

 

20

Product development expense

 

 

3,044

 

 

7,381

General and administrative expense

 

 

28,135

 

 

81,432

Total stock compensation expense

 

$

31,368

 

$

89,206

 

Year Ended
December 31,

   

2020

 

2019

Cost of revenue

 

$

1,527

 

$

1,478

Sales and marketing expense

 

 

90

 

 

130

Product development expense

 

 

19,491

 

 

117,375

General and administrative expense

 

 

222,089

 

 

710,013

Total stock-based compensation expense

 

$

243,197

 

$

828,996