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Note 3 - Restructuring and Other Charges (Details Textual) - USD ($) $ in Thousands |  |  | 9 Months Ended
--- | --- | --- | ---
Jul. 19, 2021 | Jun. 10, 2021 | Sep. 30, 2021 | Sep. 30, 2020
Incremental Sublease Income Above Impairment Charge | $ 350 |  |  |
Employee Severance [Member] |  |  |  |
Restructuring Charges, Total |  |  | $ 120 |
Severance and Other One-Time Termination Benefits [Member] |  |  |  |
Restructuring Charges, Total |  |  |  | $ 207
Resignation of Chief Financial Officer [Member] |  |  |  |
Restructuring Charges, Total |  |  |  | 133
Headcount Reductions and Employee Relocation [Member] |  |  |  |
Restructuring Charges, Total |  |  |  | 46
EMS Segment Restructuring and Facility Consolidation [Member] |  |  |  |
Restructuring Charges, Total |  |  |  | 14
Other Restructuring [Member] |  |  |  |
Restructuring Charges, Total |  |  |  | $ 14
EMS Segment Restructuring and Facility Consolidation [Member] |  |  |  |
Restructuring and Related Costs, Incurred Cost, Total |  |  | 183 |
EMS Segment Restructuring and Facility Consolidation [Member] | Employee Severance [Member] |  |  |  |
Restructuring Charges, Total |  |  | 0 |
Executive Management Changes [Member] |  |  |  |
Restructuring and Related Costs, Incurred Cost, Total |  |  | 370 |
Executive Management Changes [Member] | Employee Severance [Member] |  |  |  |
Restructuring and Related Costs, Incurred Cost, Total |  | $ 120 | 120 |
Restructuring Charges, Total |  |  | 120 |
Executive Management Changes [Member] | Employee Severance [Member] | Restructuring and Other Charges [Member] |  |  |  |
Restructuring and Related Costs, Incurred Cost, Total |  |  | 120 |
Executive Management Changes [Member] | Legal Fees [Member] |  |  |  |
Restructuring and Related Costs, Incurred Cost, Total |  |  | 159 |
Stock-based Compensation Expense [Member] | Modification Cost [Member] |  |  |  |
Restructuring and Related Costs, Incurred Cost, Total |  |  | $ 91 |

X
- Definition Amount of incremental sublease income above the impairment charge that have recorded. + References No definition available. + Details
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- Definition Discloses the amount charged against the accrued restructuring reserves, or earnings if not previously accrued, during the period for the specified type of restructuring cost. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 420 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (b)(1) -URI http://asc.fasb.org/extlink&oid=6394359&loc=d3e17939-110869 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 420 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SAB Topic 5.P.4(b)(1)) -URI http://asc.fasb.org/extlink&oid=115931487&loc=d3e140904-122747 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 420 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=6394359&loc=d3e17939-110869 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 420 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SAB Topic 5.P.4(d)) -URI http://asc.fasb.org/extlink&oid=115931487&loc=d3e140904-122747 + Details
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