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Note 11 - Share-based Compensation (Tables) | 12 Months Ended
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Dec. 31, 2019
Notes Tables |
Share-based Payment Arrangement, Option, Activity [Table Text Block] |
|  | Year Ended |  |  | Year Ended |
|  | December 31, 2019 |  |  | December 31, 2018 |
|  |  |  |  |  | Wtd. Avg. |  |  |  |  |  |  | Wtd. Avg. |
|  |  |  |  |  | Exercise |  |  |  |  |  |  | Exercise |
|  | Shares |  |  | Price |  |  | Shares |  |  | Price |
Outstanding at beginning of year |  |  | 2,043,402 |  |  | $ | 1.91 |  |  |  | 2,390,012 |  |  | $ | 1.85 |
Granted |  | –– |  |  | –– |  |  | –– |  |  | –– |
Exercised |  |  | (469,510 | ) |  |  | 1.72 |  |  |  | (330,983 | ) |  |  | 1.36 |
Forfeited |  |  | (3,437 | ) |  |  | 5.69 |  |  |  | (15,627 | ) |  |  | 4.34 |
Expired - vested |  | –– |  |  | –– |  |  | –– |  |  | –– |
Outstanding at end of year |  |  | 1,570,455 |  |  | $ | 1.96 |  |  |  | 2,043,402 |  |  | $ | 1.91 |
Stock options exercisable at year end |  |  | 1,465,599 |  |  | $ | 1.94 |  |  |  | 1,661,999 |  |  | $ | 1.87 |
|  | Year Ended |  |  | Year Ended |
|  | December 31, 2019 |  |  | December 31, 2018 |
|  |  |  |  |  | Wtd. Avg. |  |  |  |  |  |  | Wtd. Avg. |
|  |  |  |  |  | Exercise |  |  |  |  |  |  | Exercise |
|  | Shares |  |  | Price |  |  | Shares |  |  | Price |
Outstanding at beginning of year |  |  | 964,997 |  |  | $ | 1.64 |  |  |  | 999,997 |  |  | $ | 1.64 |
Granted |  | –– |  |  | –– |  |  | –– |  |  | –– |
Exercised |  |  | (227,500 | ) |  |  | 1.64 |  |  |  | (35,000 | ) |  |  | 1.64 |
Outstanding at end of year |  |  | 737,497 |  |  | $ | 1.64 |  |  |  | 964,997 |  |  | $ | 1.64 |
Stock options exercisable at year end |  |  | 737,497 |  |  | $ | 1.64 |  |  |  | 465,001 |  |  | $ | 1.64 |
Share-based Payment Arrangement, Option, Exercise Price Range [Table Text Block] |
Range of Exercise Prices |  |  | Number Outstanding at December 31, 2019 |  |  | Weighted Average Remaining Contractual Life |  |  | Weighted Average Exercise Price |
$0.49 | - | 1.00 |  |  |  | 3,571 |  |  |  | 1.91 |  |  | $ | 0.49 |
$1.01 | - | 1.50 |  |  |  | 175,199 |  |  |  | 1.32 |  |  | $ | 1.24 |
$1.51 | - | 2.50 |  |  |  | 1,328,367 |  |  |  | 5.46 |  |  | $ | 1.94 |
$2.51 | - | 8.60 |  |  |  | 63,318 |  |  |  | 5.71 |  |  | $ | 4.42 |
|  |  |  |  |  | 1,570,455 |  |  |  | 5.00 |  |  | $ | 1.96 |
Share-based Payment Arrangement, Restricted Stock and Restricted Stock Unit, Activity [Table Text Block] |
|  | Year Ended |  |  | Year Ended |
|  | December 31, 2019 |  |  | December 31, 2018 |
|  |  |  |  |  | Wtd. Avg. |  |  |  |  |  |  | Wtd. Avg. |
|  |  |  |  |  | Grant Date |  |  |  |  |  |  | Grant Date |
|  | Shares |  |  | Fair Value |  |  | Shares |  |  | Fair Value |
Outstanding at beginning of year |  |  | 279,919 |  |  | $ | 5.00 |  |  |  | 237,926 |  |  | $ | 1.79 |
Granted |  |  | 309, 218 |  |  |  | 17.15 |  |  |  | 181,268 |  |  |  | 7.02 |
Vested |  |  | (125,818 | ) |  |  | 4.57 |  |  |  | (116,647 | ) |  |  | 1.81 |
Forfeited |  |  | (33,920 | ) |  |  | 12.88 |  |  |  | (22,628 | ) |  |  | 3.95 |
Non-vested at end of year |  |  | 429,399 |  |  | $ | 13.25 |  |  |  | 279,919 |  |  | $ | 5.00 |
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Table Text Block] |
|  | Year Ended December 31, |
(In thousands) |  | 2019 |  |  | 2018 |
Research and development costs |  | $ | 571 |  |  | $ | 260 |
Sales and marketing costs |  |  | 711 |  |  |  | 269 |
General and administrative costs |  |  | 1,584 |  |  |  | 809 |
Cost of product revenue |  |  | 177 |  |  |  | 181 |
Total |  | $ | 3,043 |  |  | $ | 1,519 |

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- Definition Tabular disclosure of allocation of amount expensed and capitalized for award under share-based payment arrangement to statement of income or comprehensive income and statement of financial position. Includes, but is not limited to, corresponding line item in financial statement. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (h)(1) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SAB Topic 14.F) -URI http://asc.fasb.org/extlink&oid=115993241&loc=d3e301413-122809 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5047-113901 + Details
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- Definition Tabular disclosure of option exercise prices, by grouped ranges, including the upper and lower limits of the price range, the number of shares under option, weighted average exercise price and remaining contractual option terms. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
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- Definition Tabular disclosure for stock option plans. Includes, but is not limited to, outstanding awards at beginning and end of year, grants, exercises, forfeitures, and weighted-average grant date fair value. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (e) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
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- Definition Disclosure of the number and weighted-average grant date fair value for restricted stock and restricted stock units that were outstanding at the beginning and end of the year, and the number of restricted stock and restricted stock units that were granted, vested, or forfeited during the year. + References No definition available. + Details
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