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Note 7 - Share-based Compensation (Tables) | 3 Months Ended
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Mar. 31, 2020
Notes Tables |
Share-based Payment Arrangement, Option, Activity [Table Text Block] |
|  | Three Month s Ended |
|  | March 31, 20 20 |
|  | Options |  |  | Weighted Avg. Exercise Price |
Outstanding at beginning of period |  |  | 1,570,455 |  |  | $ | 1.96 |
Granted |  |  | — |  |  | $ | — |
Exercised |  |  | (251,180 | ) |  | $ | 1.84 |
Forfeited |  |  | — |  |  | $ | — |
Expired |  |  | — |  |  | $ | — |
Outstanding at March 31, 2020 |  |  | 1,319,275 |  |  | $ | 1.98 |
Service vesting-based stock options exercisable at March 31, 2020 |  |  | 1,263,377 |  |  | $ | 1.96 |
|  | Three Month s Ended March 31, 2020 |
|  | Options |  |  | Wtd. Avg. Exercise Price |
Outstanding at beginning of period |  |  | 737,497 |  |  | $ | 1.64 |
Granted |  |  | — |  |  | $ | — |
Exercised |  |  | (17,113 | ) |  | $ | 1.64 |
Outstanding performance-based at March 31, 2020 |  |  | 720,384 |  |  | $ | 1.64 |
Performance-based stock options exercisable at March 31, 2020 |  |  | 720,384 |  |  | $ | 1.64 |
Share-based Payment Arrangement, Restricted Stock and Restricted Stock Unit, Activity [Table Text Block] |
|  | Thr ee Months Ended March 31, 20 20 |
|  | Number of Restricted Shares |  |  | Grant-Date Fair Value |
Unvested outstanding at beginning of period |  |  | 429,399 |  |  | $ | 13.25 |
Granted |  |  | 175,971 |  |  | $ | 9.43 |
Vested |  |  | (53 026 | ) |  | $ | 12.90 |
Forfeited |  |  | (7,000 | ) |  | $ | 15.92 |
Unvested outstanding at March 31, 2020 |  |  | 545,344 |  |  | $ | 12.01 |
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Table Text Block] |
|  | Three Months Ended March 31, |
(In thousands) |  | 20 20 |  |  | 201 9 |
Research and development costs |  | $ | 174 |  |  | $ | 67 |
Sales and marketing costs |  |  | 229 |  |  |  | 154 |
General and administrative costs |  |  | 577 |  |  |  | 278 |
Cost of product sales |  |  | 133 |  |  |  | 32 |
Total |  | $ | 1,113 |  |  | $ | 531 |

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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 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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