XML 35 R26.htm IDEA: XBRL DOCUMENT
v3.22.2.2

Note 5 - Marketable Securities (Tables) | 9 Months Ended
--- | ---
Sep. 30, 2022
Notes Tables |
Schedule of Available-for-Sale Securities Reconciliation [Table Text Block] |
|  | September 30, 2022 (Unaudited) |
|  | Amortized cost |  |  | Gross unrealized gains |  |  | Gross unrealized losses |  |  | Fair value |
Available-for-sale - matures within one year: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Corporate bonds |  | $ | 18,390 |  |  | $ | — |  |  | $ | (722 | ) |  | $ | 17,668 |
Available-for-sale - matures after one year through four years: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Corporate bonds |  |  | 89,396 |  |  |  | — |  |  |  | (6,363 | ) |  |  | 83,033 |
Total |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
|  | $ | 107,786 |  |  | $ | — |  |  | $ | (7,085 | ) |  | $ | 100,701 |
|  | December 31, 2021 |
|  | Amortized cost |  |  | Gross unrealized gains |  |  | Gross unrealized losses |  |  | Fair value |
Available-for-sale - matures within one year: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Corporate bonds |  | $ | 11,937 |  |  | $ | 39 |  |  | $ | (7 | ) |  | $ | 11,969 |
Available-for-sale - matures after one year through five years: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Corporate bonds |  |  | 78,920 |  |  |  | 227 |  |  |  | (818 | ) |  |  | 78,329 |
Total |  | $ | 90,857 |  |  | $ | 266 |  |  | $ | (825 | ) |  | $ | 90,298 |
Debt Securities, Available-for-Sale, Unrealized Loss Position, Fair Value [Table Text Block] |
|  | Less than 12 months |  |  | 12 months or greater |
|  | Fair value |  |  | Gross unrealized loss |  |  | Fair value |  |  | Gross unrealized loss |
As of September 30, 2022 (unaudited) |  | $ | 76,423 |  |  | $ | (4,011 | ) |  | $ | 24,278 |  |  | $ | (3,074 | )
As of December 31, 2021 |  | $ | 53,412 |  |  | $ | (667 | ) |  | $ | 12,039 |  |  | $ | (158 | )
Schedule of Realized Gain (Loss) [Table Text Block] |
|  | Nine months ended September 30, |  |  | Three months ended September 30, |
|  | 2022 (unaudited) |  |  | 2021 (unaudited) |  |  | 2022 (unaudited) |  |  | 2021 (unaudited) |
Gross realized gains from sale of available-for-sale marketable securities |  | $ | — |  |  | $ | 43 |  |  | $ | — |  |  | $ | — |
Gross realized losses from sale of available-for-sale marketable securities |  | $ | (25 | ) |  | $ | (30 | ) |  | $ | (4 | ) |  | $ | (2 | )

X
- Definition Tabular disclosure of fair value of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), in unrealized loss position, without allowance for credit loss. Includes beneficial interest in securitized financial asset. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 30 -Section 55 -Paragraph 8 -URI https://asc.fasb.org/extlink&oid=121590138&loc=SL82922954-210456 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 6 -Subparagraph (a) -URI https://asc.fasb.org/extlink&oid=126970911&loc=d3e27290-111563 Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 30 -Section 50 -Paragraph 4 -URI https://asc.fasb.org/extlink&oid=124269663&loc=SL82922888-210455 + Details
Name: | us-gaap_DebtSecuritiesAvailableForSaleUnrealizedLossPositionFairValueTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of the reconciliation of available-for-sale securities from cost basis to fair value. + References No definition available. + Details
Name: | us-gaap_ScheduleOfAvailableForSaleSecuritiesReconciliationTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of the proceeds from sales of available-for-sale securities and the gross realized gains and gross realized losses that have been included in earnings as a result of those sales. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 9 -Subparagraph (a) -URI https://asc.fasb.org/extlink&oid=126970911&loc=d3e27357-111563 + Details
Name: | us-gaap_ScheduleOfRealizedGainLossTableTextBlock
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