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Stockholders' Equity (Tables)
 3 Months Ended
Mar. 31, 2020
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Nonvested Restricted Stock Shares Activity [Table Text Block]
The following table contains summarized information about restricted stock issued during the year ended December 31, 2019 and the three months ended March 31, 2020:
Restricted Stock
Common Shares
Weighted Average
Grant Date
Fair Value
Weighted Average
Remaining Years
to Vest
Nonvested at December 31, 2018
57,984

$
3.70

1.4
Granted
120,512

1.60

 
Vested
(139,157
)
2.24

 
Forfeited
(8,057
)
3.18

 
Nonvested at December 31, 2019
31,282

$
2.15

1.9
Granted
390,625

0.32

 
Vested
(104,833
)
0.42

 
Forfeited
—

 
 
Nonvested at March 31, 2020
317,074

$
0.47

0.8
Schedule of Nonvested Restricted Stock Units Activity [Table Text Block]
The following table contains summarized information about restricted stock units during the year ended December 31, 2019 and the three months ended March 31, 2020:
Restricted Stock Units
Common Shares
Weighted Average
Grant Date
Fair Value
Weighted Average
Remaining Years
to Vest
Nonvested at December 31, 2018
160,000

$
1.04

1.0
Granted
410,437

0.40

 
Vested
(149,290
)
0.79

 
Forfeited
(54,335
)
1.04

 
Nonvested at December 31, 2019
366,812

$
0.42

3.2
Granted
684,994

0.28

 
Vested
(34,046
)
0.31

 
Forfeited
(5,000
)
0.28

 
Nonvested at March 31, 2020
1,012,760

$
0.32

1.8
Share-based Payment Arrangement, Option, Activity [Table Text Block]
A summary of option activity under the 2011 Equity Incentive Plans during the year ended December 31, 2019 and the three months ended March 31, 2020, is presented below:
Options Outstanding
Common Shares
 
Weighted Average
Exercise Price
 
Weighted Average
Remaining Life
(Years)
Outstanding at December 31, 2018
1,040,477

 
$
5.23

 
6.5
Granted
586,552

 
0.67

 
 
Expired
(147,313
)
 
7.59

 
 
Forfeited
(121,879
)
 
2.70

 
 
Outstanding at December 31, 2019
1,357,837

 
$
3.24

 
7.2
Granted
8,917

 
0.25

 
 
Expired
—

 
—

 
 
Forfeited
(20,399
)
 
5.36

 
 
Outstanding at March 31, 2020
1,346,355

 
$
3.18

 
7.0
 
 
 
 
 
 
Exercisable at March 31, 2020
795,928

 
$
4.64

 
5.7
Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions [Table Text Block]
The Company used the following assumptions for stock options granted under the 2011 Equity Incentive Plans during the three months ended March 31, 2020 and 2019:
 
Three Months Ended
2011 Equity Incentive Plans Assumptions
March 31,
2020
 
March 31,
2019
Expected term
6 years
 
6 years
Weighted average volatility
101.92%
 
63.37%
Weighted average risk-free interest rate
1.71%
 
2.52%
Expected dividends
—
 
—
Weighted average expected forfeiture rate
15.32%
 
7.82%
The following table shows the number of stock options granted under the Company’s 2011 Equity Incentive Plans and the assumptions used to determine the fair value of those options during the three months ended March 31, 2020 and 2019:
Period Ended
 
Total Stock Options Granted
 
Weighted-Average Exercise Price
 
Weighted-Average Expected Term
 
Weighted-Average Volatility
 
Weighted-Average Risk-Free Interest Rate
 
Weighted-Average
Grant Date
Fair Value
March 31, 2019
 
30,542
 
$1.46
 
6 years
 
63.37%
 
2.52%
 
$0.91
March 31, 2020
 
8,917
 
$0.25
 
6 years
 
101.92%
 
1.71%
 
$0.16
Schedule of Share-based Compensation, Employee Stock Purchase Plan, Activity [Table Text Block]
Total stock-based compensation expense recognized on restricted stock, restricted stock units, stock options and the employee stock purchase plan issuances during the three months ended March 31, 2020 and 2019 was recorded in the Company’s consolidated statements of operations as follows:
 
 
Three Months Ended March 31,
 
 
2020
 
2019
Cost of revenue
 
$
7,004

 
$
2,886

Sales and marketing
 
$
22,056

 
$
6,336

General and administrative
 
$
100,511

 
$
151,655

Total stock-based compensation
 
$
129,571

 
$
160,877
Stock options  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Schedule of Nonvested Share Activity [Table Text Block]
A summary of the nonvested stock option activity under the 2011 Equity Incentive Plans during the year ended December 31, 2019 and the three months ended March 31, 2020, is presented below:
Nonvested Options
Common Shares
 
Weighted Average
Grant Date
Fair Value
 
Weighted Average
Remaining Years
to Vest
Nonvested at December 31, 2018
300,510

 
$
0.80

 
2.4
Granted
586,552

 
0.40

 
 
Vested
(197,202
)
 
1.44

 
 
Forfeited
(89,081
)
 
0.80

 
 
Nonvested at December 31, 2019
600,779

 
$
0.64

 
3.0
Granted
8,917

 
0.16

 
 
Vested
(56,128
)
 
1.20

 
 
Forfeited
(3,141
)
 
0.88

 
 
Nonvested at March 31, 2020
550,427

 
$
0.56

 
2.8