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Note 7 - Share-based Compensation (Tables) | 6 Months Ended
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Jun. 30, 2020
Notes Tables |
Share-based Payment Arrangement, Option, Activity [Table Text Block] |
|  | Six Month Period Ended |
|  | June 30, 20 20 |
|  |  |  |  |  | Wtd. Avg. |
|  |  |  |  |  | Exercise |
|  | Options |  |  | Price |
Outstanding at beginning of year |  |  | 1,570,455 |  |  | $ | 1.96 |
Granted |  |  | — |  |  | $ | — |
Exercised |  |  | (393,680 | ) |  | $ | 1.92 |
Forfeited |  |  | — |  |  | $ | — |
Expired |  |  | — |  |  | $ | — |
Outstanding service vesting-based at June 30, 2020 |  |  | 1,176,775 |  |  | $ | 1.98 |
Service vesting-based options exercisable at June 30, 2020 |  |  | 1,148,338 |  |  | $ | 1.94 |
|  | Six Month Period Ended |
|  | June 30, 20 20 |
|  |  |  |  |  | Wtd. Avg. |
|  |  |  |  |  | Exercise |
|  | Options |  |  | Price |
Outstanding at beginning of year |  |  | 737,497 |  |  | $ | 1.64 |
Granted |  |  | — |  |  | $ | — |
Exercised |  |  | (17,113 | ) |  | $ | 1.64 |
Outstanding performance-based at June 30, 2020 |  |  | 720,384 |  |  | $ | 1.64 |
Performance-based options exercisable at June 30, 2020 |  |  | 720,384 |  |  | $ | 1.64 |
Share-based Payment Arrangement, Restricted Stock and Restricted Stock Unit, Activity [Table Text Block] |
|  | Six Month Period Ended |
|  | June 30, 2020 |
Service vesting-based restricted stock |  | Number of Restricted Shares |  |  | Grant-Date Fair Value |
Outstanding at beginning of year |  |  | 429,399 |  |  | $ | 13.25 |
Granted |  |  | 235,215 |  |  | $ | 12.03 |
Granted in lieu of cash |  |  | 34,154 |  |  | $ | 9.18 |
Vested |  |  | (88,390 | ) |  | $ | 11.89 |
Forfeited |  |  | (20,661 | ) |  | $ | 14.62 |
Outstanding at June 30, 2020 |  |  | 589,717 |  |  | $ | 12.68 |
|  | Six Month Period Ended |
|  | June 30, 20 20 |
Performance-based restricted stock |  | Number of Restricted Shares |  |  | Grant-Date Fair Value |
Outstanding at beginning of year |  |  | — |  |  | $ | — |
Expected to vest |  |  | 82,805 |  |  | $ | 9.18 |
Vested |  |  | — |  |  | $ | — |
Forfeited |  |  | — |  |  | $ | — |
Outstanding at June 30, 2020 |  |  | 82,805 |  |  | $ | 9.18 |
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Table Text Block] |
|  | Three Month Period Ended |  |  | Six Month Period Ended |
|  | June 30, |  |  | June 30, |
(In thousands) |  | 20 20 |  |  | 201 9 |  |  | 20 20 |  |  | 201 9 |
Research and development costs |  | $ | 222 |  |  | $ | 168 |  |  | $ | 397 |  |  | $ | 235 |
Sales and marketing costs |  |  | 96 |  |  |  | 171 |  |  |  | 325 |  |  |  | 326 |
General and administrative costs |  |  | 699 |  |  |  | 439 |  |  |  | 1,275 |  |  |  | 716 |
Cost of product sales |  |  | 128 |  |  |  | 40 |  |  |  | 261 |  |  |  | 72 |
Total |  | $ | 1,145 |  |  | $ | 818 |  |  | $ | 2,258 |  |  | $ | 1,349 |

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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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