XML 53 R36.htm IDEA: XBRL DOCUMENT
v3.22.0.1

Note 15 - Stock-based Compensation (Tables) | 12 Months Ended
--- | ---
Dec. 31, 2021
Notes Tables |
Share-based Payment Arrangement, Option, Activity [Table Text Block] |
|  | Number of Shares |  |  | Weighted-Average Exercise Price |  |  | Weighted-Average of Remaining Contractual Life (in years) |  |  | Aggregate Intrinsic Value |
Outstanding at December 31, 2020 |  |  | 2,423,466 |  |  | $ | 4.41 |  |  |  |  |  |  |  |  |
Issued |  |  | 133,850 |  |  | $ | 37.37 |  |  |  |  |  |  |  |  |
Exercised |  |  | (526,015 | ) |  | $ | 3.58 |  |  |  |  |  |  |  |  |
Expired/Forfeited |  |  | (13,332 | ) |  | $ | 15.30 |  |  |  |  |  |  |  |  |
Outstanding at December 31, 2021 |  |  | 2,017,969 |  |  | $ | 6.74 |  |  |  | 1.2 |  |  | $ | 130,311,334 |
Exercisable at December 31, 2021 |  |  | 1,599,199 |  |  | $ | 3.82 |  |  |  | 0.7 |  |  | $ | 107,945,775 |
Schedule of Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Grant Date Intrinsic Value [Table Text Block] |
|  | Year ended December 31, |
|  |  | 2021 |  |  |  | 2020 |
Weighted average fair value per share of options granted |  | $ | 24.00 |  |  | $ | 9.47 |
Cash received from options exercised, net |  | $ | 1,885 |  |  | $ | 1,326 |
Aggregate intrinsic value of options exercised |  | $ | 13,673 |  |  | $ | 5,726 |
Grant date fair value of shares vested |  | $ | 834 |  |  | $ | 944 |

X
- Definition Tabular disclosure of the total intrinsic value of options exercised (or share units converted), share-based liabilities paid, and the total fair value of shares vested during the year. + 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)(2) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
Name: | us-gaap_ScheduleOfShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGrantDateIntrinsicValueTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- 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
Name: | us-gaap_ScheduleOfShareBasedCompensationStockOptionsActivityTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- References No definition available. + Details
Name: | us-gaap_TableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration