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v3.23.1

Note 2 - Summary of Significant Accounting Policies (Details Textual) € in Thousands, $ in Thousands | 12 Months Ended |  |  |
--- | --- | --- | --- | ---
Dec. 31, 2022 USD ($) | Dec. 31, 2021 USD ($) | Dec. 31, 2022 EUR (€) | Mar. 31, 2022 USD ($) | May 31, 2018 USD ($)
Restricted Cash, Total | $ 1,142 | $ 0 |  |  |
Accounts Receivable, Allowance for Credit Loss, Recovery | 470 |  |  |  |
Accounts Receivable, Credit Loss Expense (Reversal) | $ 286 | $ 0 |  |  |
Number of Operating Segments | 3 | 2 |  |  |
Inventory Write-down | $ 771 | $ 203 |  |  |
Depreciation, Total | 809 | 666 |  |  |
Deferred Grant Proceeds | 208 |  |  |  |
Foreign Currency Transaction Gain (Loss), before Tax, Total | (109) | $ (34) |  |  |
City of Rochester and State of New York [Member] |  |  |  |  |
Contingent Liability, Repayment of State and Local Grant Funds Received |  |  |  | $ 87 | $ 550
Covenant, Future Amount Receivable | $ 285 |  |  |  |
Minimum [Member] |  |  |  |  |
Property, Plant and Equipment, Useful Life (Year) | 1 year |  |  |  |
Maximum [Member] |  |  |  |  |
Property, Plant and Equipment, Useful Life (Year) | 10 years |  |  |  |
Bank Guarantee on Customer Order Deposit [Member] |  |  |  |  |
Restricted Cash, Total | $ 1,142 |  | € 1,160 |  |

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