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Note 10 - Leases (Details Textual) $ in Thousands |  |  |  |  |  |  | 3 Months Ended | 12 Months Ended |  |
--- | --- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Aug. 16, 2021 USD ($) | Jul. 19, 2021 USD ($) | Oct. 01, 2020 USD ($) | Sep. 22, 2020 USD ($) ft² | Jul. 19, 2020 USD ($) | Jan. 23, 2020 USD ($) | Dec. 31, 2020 USD ($) | Dec. 31, 2021 USD ($) | Dec. 31, 2020 USD ($) | Dec. 21, 2021 USD ($) | Nov. 30, 2021 USD ($)
Operating Lease, Right-of-Use Asset, Amortization Expense |  |  |  |  |  |  |  | $ 1,039 | $ 1,294 |  |
Operating Lease, Impairment Loss |  |  |  |  |  |  | $ 612 | 0 | 612 |  |
Incremental Sublease Income Above Impairment Charge |  | $ 350 |  |  | $ 350 |  |  |  |  |  |
Operating Lease, Right-of-Use Asset |  |  |  |  |  |  | 6,387 | 5,919 | 6,387 |  |
Operating Lease, Liability, Total |  |  |  |  |  |  |  | $ 6,619 |  |  |
Lease Facility in Fremont, California [Member] |  |  |  |  |  |  |  |  |  |  |
Lessee, Operating Lease, Term of Contract (Month) | 38 months 15 days |  |  |  |  |  |  |  |  |  |
Right-of-Use Asset Obtained in Exchange for Operating Lease Liability | $ 202 |  |  |  |  |  |  |  |  |  |
Lease Facility in Netherlands [Member] |  |  |  |  |  |  |  |  |  |  |
Lessee, Operating Lease, Term of Contract (Month) |  |  |  |  |  |  |  |  |  |  | 37 months
Operating Lease, Right-of-Use Asset |  |  |  |  |  |  |  |  |  |  | $ 252
Operating Lease, Liability, Total |  |  |  |  |  |  |  |  |  |  | $ 252
Automobile Leases [Member] |  |  |  |  |  |  |  |  |  |  |
Lessee, Operating Lease, Term of Contract (Month) |  |  |  |  |  |  |  | 48 months |  |  |
Operating Lease, Right-of-Use Asset |  |  |  |  |  |  | 91 | $ 54 | 91 |  |
Operating Lease, Liability, Total |  |  |  |  |  |  | 91 | 54 | 91 |  |
Increase in Operating Lease Liabilities and Right-of-Use Assets, Non-cash |  |  |  |  |  |  | 91 |  |  |  |
Facility Lease From Acquisition of Acculogic [Member] |  |  |  |  |  |  |  |  |  |  |
Operating Lease, Right-of-Use Asset |  |  |  |  |  |  |  | 76 |  | $ 76,000 |
Operating Lease, Liability, Total |  |  |  |  |  |  |  | 78 |  | $ 78,000 |
Lease Agreement, EMS Facility in Fremont, California [Member] |  |  |  |  |  |  |  |  |  |  |
Operating Lease, Right-of-Use Asset |  |  |  |  |  |  | 1,176 | 202 | 1,176 |  |
Operating Lease, Liability, Total |  |  |  |  |  |  | 1,176 | $ 202 | 1,176 |  |
Lessee, Operating Lease, Renewal Term (Month) |  |  |  |  |  | 61 months |  |  |  |  |
Increase in Operating Lease Liabilities and Right-of-Use Assets, Non-cash |  |  |  |  |  | $ 1,176 |  |  |  |  |
Lease Agreement, EMS Facility in Mt. Laurel, New Jersey [Member] |  |  |  |  |  |  |  |  |  |  |
Operating Lease, Right-of-Use Asset |  |  |  |  |  |  | 2,051 |  | 2,051 |  |
Operating Lease, Liability, Total |  |  |  |  |  |  | 2,051 |  | 2,051 |  |
Lessee, Operating Lease, Renewal Term (Month) |  |  |  | 120 months |  |  |  |  |  |  |
Increase in Operating Lease Liabilities and Right-of-Use Assets, Non-cash |  |  |  | $ 2,051 |  |  |  |  |  |  |
Area of Real Estate Property (Square Foot) | ft² |  |  |  | 33,650 |  |  |  |  |  |  |
Lease Agreement, Ambrell’s Netherlands Facility [Member] |  |  |  |  |  |  |  |  |  |  |
Operating Lease, Right-of-Use Asset |  |  |  |  |  |  | 133 |  | 133 |  |
Operating Lease, Liability, Total |  |  |  |  |  |  | $ 133 |  | $ 133 |  |
Lessee, Operating Lease, Renewal Term (Month) |  |  | 3 years |  |  |  |  |  |  |  |
Increase in Operating Lease Liabilities and Right-of-Use Assets, Non-cash |  |  | $ 133 |  |  |  |  |  |  |  |

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