XML 40 R31.htm IDEA: XBRL DOCUMENT
v3.23.1

Note 6 - Earnings (Loss) Per Share (Tables) | 3 Months Ended
--- | ---
Mar. 31, 2023
Notes Tables |
Schedule of Earnings Per Share, Basic and Diluted [Table Text Block] |
|  | Three months ended March 31, |
​ |  | 2023 |  |  | 2022 |
Numerator: |  | ​ |  |  | ​ |
Net loss |  | $ | (16,292 | ) |  | $ | (16,062 | )
Denominator: |  | ​ |  |  | ​ |
Weighted average shares used to compute net loss per share |  | ​ |  |  | ​ |
Basic |  |  | 28,872 |  |  |  | 27,463 |
Diluted |  |  | 28,872 |  |  |  | 27,463 |
Net loss per share |  | ​ |  |  | ​ |
Basic |  | $ | (0.56 | ) |  | $ | (0.58 | )
Diluted |  | $ | (0.56 | ) |  | $ | (0.58 | )
Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table Text Block] |
|  | Three months ended March 31, |
​ |  | 2023 |  |  | 2022 |
Employee stock options |  |  | — |  |  |  | __ |
Restricted stock units |  |  | 458 |  |  |  | __ |
Shares for convertible senior notes |  |  | 4,587 |  |  |  | 4,587 |
Total antidilutive shares |  |  | 5,045 |  |  |  | 4,587 |

X
- Definition Tabular disclosure of securities (including those issuable pursuant to contingent stock agreements) that could potentially dilute basic earnings per share (EPS) in the future that were not included in the computation of diluted EPS because to do so would increase EPS amounts or decrease loss per share amounts for the period presented, by antidilutive securities. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (c) -Publisher FASB -URI https://asc.fasb.org//1943274/2147482662/260-10-50-1 + Details
Name: | us-gaap_ScheduleOfAntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareTextBlock
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of an entity's basic and diluted earnings per share calculations, including a reconciliation of numerators and denominators of the basic and diluted per-share computations for income from continuing operations. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 260 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org//1943274/2147482662/260-10-50-1 + Details
Name: | us-gaap_ScheduleOfEarningsPerShareBasicAndDilutedTableTextBlock
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