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Stockholders' Equity (Tables)
 6 Months Ended
Jun. 30, 2021
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, 2020 and the six months ended June 30, 2021:
Restricted Stock ActivityCommon SharesWeighted Average
Grant Date
Fair Value		Weighted Average
Remaining Years
to Vest
Nonvested at December 31, 201931,282 $2.15 1.9
Granted390,625 0.32 
Vested(408,241)0.39 
Forfeited— 
Nonvested at December 31, 202013,666 $2.28 1.4
Granted30,324 4.86 
Vested(20,184)4.22 
Forfeited— 
Nonvested at June 30, 202123,806 $3.92 0.7
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, 2020 and the six months ended June 30, 2021:
Restricted Stock Units ActivityCommon SharesWeighted Average
Grant Date
Fair Value		Weighted Average
Remaining Years
to Vest
Nonvested at December 31, 2019366,812 $0.42 3.2
Granted930,145 0.37 
Vested(172,441)0.41 
Forfeited(154,167)0.30 
Nonvested at December 31, 2020970,349 $0.39 1.2
Granted113,270 3.84 
Vested(599,031)0.62 
Forfeited— — 
Nonvested at June 30, 2021484,588 $0.92 1.6
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, 2020 and the six months ended June 30, 2021, is presented below:
Options OutstandingCommon SharesWeighted Average
Exercise Price		Weighted Average
Remaining Life
(Years)
Outstanding at December 31, 20191,357,837 $3.24 7.2
Granted411,350 0.69 
Exercised(369)1.00 
Expired— — 
Forfeited(56,012)5.08 
Outstanding at December 31, 20201,712,806 $2.56 6.9
Granted113,689 3.26 
Exercised(133,275)0.32 
Expired— — 
Forfeited(12,979)4.09 
Outstanding at June 30, 20211,680,241 $2.78 6.6
Exercisable at June 30, 20211,022,605 $3.80 5.3
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 and six months ended June 30, 2021 and 2020:
Three Months EndedSix Months Ended
2011 Equity Incentive Plans AssumptionsJune 30,
2021		June 30,
2020		June 30,
2021		June 30,
2020
Expected term6 years6 years6 years6 years
Weighted average volatility120.35%101.38%119.43%101.40%
Weighted average risk-free interest rate1.12%0.44%0.95%0.49%
Expected dividends————
Weighted average expected forfeiture rate10.23%8.21%13.89%8.5%
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 employee stock purchase plan issuances during the three and six months ended June 30, 2021 and 2020 was recorded in the Company’s consolidated statements of operations and comprehensive loss as follows:
Three Months EndedSix Months Ended
June 30,
2021		June 30,
2020		June 30,
2021		June 30,
2020
Cost of revenue$1,963 $7,565 $3,417 $14,569 
Sales and marketing5,318 17,587 10,748 39,643 
General and administrative198,913 93,555 390,015 194,066 
Total stock-based compensation$206,194 $118,707 $404,180 $248,278 
Equity Incentive 2011 Plan [Member]  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions [Table Text Block]
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 using a Black-Scholes option-pricing model during the six months ended June 30, 2021 and 2020:
Period EndedTotal Stock
Options
Granted		Weighted-Average Exercise PriceWeighted-Average Expected TermWeighted-Average VolatilityWeighted-Average Risk-Free Interest RateExpected DividendsWeighted-Average
Grant Date
Fair Value
June 30, 2020217,580 $0.186 years101.40%0.49%— $0.16
June 30, 2021113,689 $3.266 years119.43%0.95%— $2.81
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, 2020 and the six months ended June 30, 2021, is presented below:
Nonvested OptionsCommon SharesWeighted Average
Grant Date
Fair Value		Weighted Average
Remaining Years
to Vest
Nonvested at December 31, 2019600,779 $0.64 3.0
Granted411,350 0.56 
Vested(283,766)0.72 
Forfeited(12,877)0.88 
Nonvested at December 31, 2020715,486 $0.56 2.5
Granted113,689 2.81 
Vested(165,522)0.65 
Forfeited(6,017)0.92 
Nonvested at June 30, 2021657,636 $0.93 2.3