XML 38 R28.htm IDEA: XBRL DOCUMENT
v3.22.2.2

Note 4 - Stock-based Compensation (Tables) | 6 Months Ended
--- | ---
Sep. 30, 2022
Notes Tables |
Share-Based Payment Arrangement, Expensed and Capitalized, Amount [Table Text Block] |
|  | Three Months Ended September 30, |  |  | Six Months Ended September 30, |
|  | 2022 |  |  | 2021 |  |  | 2022 |  |  | 2021 |
Cost of revenues |  | $ | 78 |  |  | $ | 21 |  |  | $ | 107 |  |  | $ | 112 |
Research and development |  |  | 177 |  |  |  | 192 |  |  |  | 356 |  |  |  | 439 |
Selling, general and administrative |  |  | 764 |  |  |  | 888 |  |  |  | 1,590 |  |  |  | 1,842 |
Total |  | $ | 1,019 |  |  | $ | 1,101 |  |  | $ | 2,052 |  |  | $ | 2,393 |
Disclosure of Share-Based Compensation Arrangements by Share-Based Payment Award [Table Text Block] |
|  | Three Months Ended September 30, |  |  | Six Months Ended September 30, |
|  | 2022 |  |  | 2021 |  |  | 2022 |  |  | 2021 |
Expected volatility |  |  | N/A |  |  |  | N/A |  |  |  | 71.40 | % |  |  | N/A |
Risk-free interest rate |  |  | N/A |  |  |  | N/A |  |  |  | 3.10 | % |  |  | N/A |
Expected life (years) |  |  | N/A |  |  |  | N/A |  |  |  | 6.14 |  |  |  | N/A |
Dividend yield |  |  | N/A |  |  |  | N/A |  |  |  | None |  |  |  | N/A |

X
- Definition Tabular disclosure of share-based payment arrangement. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 1 -URI https://asc.fasb.org/extlink&oid=128089324&loc=d3e5047-113901 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -URI https://asc.fasb.org/extlink&oid=128089324&loc=d3e5070-113901 + Details
Name: | us-gaap_DisclosureOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTextBlock
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- 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 https://asc.fasb.org/extlink&oid=128089324&loc=d3e5070-113901 + Details
Name: | us-gaap_ScheduleOfEmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsTextBlock
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