| Share-based Payment Arrangement, Option, Activity [Table Text Block] |
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Six Months Ended June 30, 2021 |
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Weighted |
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Weighted |
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Average |
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Number |
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Average |
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Remaining |
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Aggregate |
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of |
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Exercise |
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Contractual |
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Intrinsic |
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Shares |
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Price |
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Term (years) |
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Value |
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| Options outstanding, beginning of period |
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986,399 |
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$ |
19.10 |
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8.9 |
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$ |
675 |
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| Options granted |
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2,220,600 |
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$ |
2.73 |
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| Options exercised |
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- |
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| Options canceled |
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(18,371 |
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$ |
46.78 |
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| Options outstanding, end of period |
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3,188,628 |
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$ |
7.54 |
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9.5 |
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$ |
502,298 |
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| Vested and exercisable and expected to vest, end of period |
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2,888,549 |
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$ |
7.95 |
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9.5 |
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$ |
444,100 |
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| Vested and exercisable, end of period |
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348,326 |
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$ |
34.42 |
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8.3 |
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$ |
- |
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| Share-based Payment Arrangement, Option, Exercise Price Range [Table Text Block] |
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Weighted |
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Number |
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Weighted |
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Average |
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Number |
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Weighted |
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Outstanding |
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Average |
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Remaining |
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Exercisable |
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Average |
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| Range of |
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as of |
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Exercise |
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Contractual |
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as of |
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Exercise |
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| Exercise Prices |
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June 30, 2021 |
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Price |
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Term (Years) |
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June 30, 2021 |
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Price |
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| $2.73 |
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$3.40 |
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2,220,600 |
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$ |
2.73 |
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10.0 |
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- |
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$ |
- |
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| $4.45 |
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$6.90 |
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105,300 |
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$ |
5.30 |
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9.3 |
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2,501 |
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$ |
6.22 |
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| $8.60 |
- |
$8.91 |
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843,788 |
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$ |
8.69 |
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8.4 |
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334,782 |
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$ |
8.69 |
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| $10.90 |
- |
$13.60 |
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15,500 |
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$ |
12.64 |
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8.7 |
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8,084 |
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$ |
12.99 |
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| $380.00 |
- |
$580.00 |
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125 |
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$ |
552.00 |
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7.9 |
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|
116 |
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$ |
563.62 |
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| $1,000.00 |
- |
$1,970.00 |
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1,882 |
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$ |
1,433.60 |
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7.4 |
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1,509 |
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$ |
1,433.29 |
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| $2,020.00 |
- |
$2,830.00 |
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66 |
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$ |
2,559.55 |
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6.4 |
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|
55 |
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$ |
2,567.27 |
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| $3,110.00 |
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$3,580.00 |
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189 |
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$ |
3,439.26 |
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7.1 |
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159 |
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$ |
3,449.62 |
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| $4,360.00 |
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$4,970.00 |
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595 |
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$ |
4,552.59 |
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5.9 |
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541 |
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$ |
4,555.21 |
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| $5,010.00 |
- |
$5,670.00 |
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294 |
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$ |
5,373.27 |
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5.8 |
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290 |
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$ |
5,370.52 |
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| $6,000.00 |
- |
$6,000.00 |
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|
138 |
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$ |
6,000.00 |
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4.5 |
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|
138 |
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$ |
6,000.00 |
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| $7,140.00 |
- |
$7,920.00 |
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|
139 |
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$ |
7,722.73 |
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5.4 |
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|
139 |
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$ |
7,722.73 |
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| $9,920.00 |
- |
$9,920.00 |
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12 |
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$ |
9,920.00 |
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1.6 |
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12 |
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$ |
9,920.00 |
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| Total: |
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3,188,628 |
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$ |
7.54 |
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9.5 |
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348,326 |
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$ |
34.42 |
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| Share-based Payment Arrangement, Expensed and Capitalized, Amount [Table Text Block] |
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Three Months Ended |
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Six Months Ended |
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June 30, |
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June 30, |
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2021 |
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|
2020 |
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|
2021 |
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|
2020 |
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| Cost of revenue |
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$ |
60 |
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$ |
61 |
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$ |
115 |
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$ |
121 |
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| Research and development |
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102 |
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85 |
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200 |
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171 |
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| Selling, general and administrative |
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|
705 |
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|
511 |
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1,362 |
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1,075 |
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| Total |
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$ |
867 |
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$ |
657 |
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$ |
1,677 |
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$ |
1,367 |
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