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Note 11 - Commitments and Contingencies (Details Textual) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2024 | Sep. 30, 2023 | Sep. 30, 2024 | Sep. 30, 2023
Revenue from Contract with Customer, Including Assessed Tax | $ 20,179 | $ 20,069 | $ 58,664 | $ 57,786
United States Government Agencies [Member] |  |  |  |
Revenue from Contract with Customer, Including Assessed Tax | 7,896 | 12,142 | 23,879 | 29,571
Accounts Receivable, after Allowance for Credit Loss | $ 1,997 | $ 4,280 | $ 1,997 | $ 4,280
United States Government Agencies [Member] | Revenue Benchmark [Member] | Government Contracts Concentration Risk [Member] |  |  |  |
Concentration Risk, Percentage | 39.10% | 60.50% | 40.70% | 51.20%
Inventories [Member] |  |  |  |
Purchase Obligation | $ 7,285 |  | $ 7,285 |

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