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Note 6 - Fair Value Measurements (Tables) | 9 Months Ended
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Jun. 30, 2024
Notes Tables |
Fair Value, Assets Measured on Recurring Basis [Table Text Block] |
|  | June 30, 2024 |
|  | Cost Basis |  |  | Gross Unrealized Gain |  |  | Gross Unrealized Loss |  |  | Fair Value |  |  | Cash Equivalents |  |  | Short-term Securities |  |  | Long-term Securities |
Level 1: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Money market funds |  | $ | 4,423 |  |  |  | - |  |  |  | - |  |  |  | 4,423 |  |  |  | 4,423 |  |  |  | - |  |  |  | - |
Level 2: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Certificates of deposit |  |  | 302 |  |  |  | - |  |  |  | - |  |  |  | 302 |  |  |  | - |  |  |  | 302 |  |  |  | - |
Municipal securities |  |  | 1,431 |  |  |  | 1 |  |  |  | - |  |  |  | 1,432 |  |  |  | - |  |  |  | 1,432 |  |  |  | - |
Corporate bonds |  |  | 2,315 |  |  |  | - |  |  |  | (3 | ) |  |  | 2,312 |  |  |  | - |  |  |  | 2,312 |  |  |  | - |
Subtotal |  |  | 4,048 |  |  |  | 1 |  |  |  | (3 | ) |  |  | 4,046 |  |  |  | - |  |  |  | 4,046 |  |  |  | - |
Total |  | $ | 8,471 |  |  | $ | 1 |  |  | $ | (3 | ) |  | $ | 8,469 |  |  | $ | 4,423 |  |  | $ | 4,046 |  |  | $ | - |
|  | September 30, 2023 |
|  | Cost Basis |  |  | Gross Unrealized Gain |  |  | Gross Unrealized Loss |  |  | Fair Value |  |  | Cash Equivalents |  |  | Short-term Securities |  |  | Long-term Securities |
Level 1: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Money market funds |  | $ | 2,307 |  |  | $ | - |  |  | $ | - |  |  | $ | 2,307 |  |  | $ | 2,307 |  |  | $ | - |  |  | $ | - |
Level 2: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Certificates of deposit |  |  | 301 |  |  |  | - |  |  |  | - |  |  |  | 301 |  |  |  | - |  |  |  | 301 |  |  |  | - |
Municipal securities |  |  | 926 |  |  |  | - |  |  |  | (7 | ) |  |  | 919 |  |  |  | - |  |  |  | 919 |  |  |  | - |
Corporate bonds |  |  | 264 |  |  |  | - |  |  |  | (3 | ) |  |  | 261 |  |  |  | - |  |  |  | 261 |  |  |  | - |
Subtotal |  |  | 1,491 |  |  |  | - |  |  |  | (10 | ) |  |  | 1,481 |  |  |  | - |  |  |  | 1,481 |  |  |  | - |
Total |  | $ | 3,798 |  |  | $ | - |  |  | $ | (10 | ) |  | $ | 3,788 |  |  | $ | 2,307 |  |  | $ | 1,481 |  |  | $ | - |
Debt Securities, Available-for-Sale, Unrealized Loss Position, Fair Value [Table Text Block] |
|  | As of June 30, 2024 |
|  | In loss position < 12 months |  |  | In loss position > 12 months |  |  | Total in loss position |
|  | Fair Value |  |  | Gross Unrealized Loss |  |  | Fair Value |  |  | Gross Unrealized Loss |  |  | Fair Value |  |  | Gross Unrealized Loss |
Certificates of deposit |  | $ | - |  |  | $ | - |  |  | $ | - |  |  | $ | - |  |  | $ | - |  |  | $ | - |
U.S. government agency bonds |  |  | - |  |  |  | - |  |  |  | - |  |  |  | - |  |  |  | - |  |  |  | - |
Municipal securities |  |  | 806 |  |  |  | - |  |  |  | - |  |  |  | - |  |  |  | 806 |  |  |  | - |
Corporate bonds |  |  | 2,312 |  |  |  | (3 | ) |  |  | - |  |  |  | - |  |  |  | 2,312 |  |  |  | (3 | )
|  | $ | 3,118 |  |  | $ | (3 | ) |  | $ | - |  |  | $ | - |  |  | $ | 3,118 |  |  | $ | (3 | )
|  | As of September 30, 2023 |
|  | In loss position < 12 months |  |  | In loss position > 12 months |  |  | Total in loss position |
|  | Fair Value |  |  | Gross Unrealized Loss |  |  | Fair Value |  |  | Gross Unrealized Loss |  |  | Fair Value |  |  | Gross Unrealized Loss |
Certificates of deposit |  | $ | - |  |  | $ | - |  |  | $ | - |  |  | $ | - |  |  | $ | - |  |  | $ | - |
U.S. government agency bonds |  |  | - |  |  |  | - |  |  |  | - |  |  |  | - |  |  |  | - |  |  |  | - |
Municipal securities |  |  | 684 |  |  |  | (2 | ) |  |  | 235 |  |  |  | (5 | ) |  |  | 919 |  |  |  | (7 | )
Corporate bonds |  |  | - |  |  |  | - |  |  |  | 261 |  |  |  | (3 | ) |  |  | 261 |  |  |  | (3 | )
|  | $ | 684 |  |  | $ | (2 | ) |  | $ | 496 |  |  | $ | (8 | ) |  | $ | 1,180 |  |  | $ | (10 | )
Business Combination, Fair Value Measurement of Acquired Intangible Assets [ Table Text Block] |
|  |  |  |  |  | Fair Value Measurements at June 30, 2024 |  |  |  |  |
|  | Carrying Value |  |  | (Level 1) |  |  | (Level 2) |  |  | (Level 3) |  |  | Gain/(Loss) |
Intangible assets from Evertel acquisition |  | $ | 2,550 |  |  | $ | - |  |  | $ | - |  |  | $ | 2,550 |  |  | $ | - |
Goodwill from Evertel acquisition |  | $ | 2,923 |  |  | $ | - |  |  | $ | - |  |  | $ | 2,923 |  |  | $ | - |
Fair Value, Liabilities Measured on Recurring and Nonrecurring Basis [Table Text Block] |
Value as of acquisition date |  | $ | 890 |
Remeasurement estimate |  |  | (16 | )
Settlement of contingent consideration liability |  |  | (874 | )
Balance as of June 30, 2024 |  | $ | - |
Balance as of acquisition date |  | $ | 230 |
Accretion |  |  | 15 |
Balance as of June 30, 2024 |  | $ | 245 |

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- Definition Tabular disclosure of assets, including [financial] instruments measured at fair value that are classified in stockholders' equity, if any, by class that are measured at fair value on a recurring basis. The disclosures contemplated herein include the fair value measurements at the reporting date by the level within the fair value hierarchy in which the fair value measurements in their entirety fall, segregating fair value measurements using quoted prices in active markets for identical assets (Level 1), significant other observable inputs (Level 2), and significant unobservable inputs (Level 3). + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482106/820-10-50-2 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482106/820-10-50-2 + Details
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- Definition Tabular disclosure of liabilities measured at fair value measured on a recurring or nonrecurring basis. Includes, but is not limited to, fair value measurements recorded and the reasons for the measurements, level within the fair value hierarchy in which the fair value measurements are categorized and transfers between levels 1 and 2. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482106/820-10-50-2 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482106/820-10-50-2 + Details
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