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Note 5 - Property, Plant and Equipment (Details Textual) - USD ($) $ in Thousands |  | 12 Months Ended
--- | --- | ---
Mar. 29, 2021 | Dec. 31, 2022 | Dec. 31, 2021
Depreciation, Total |  | $ 800 | $ 600
Proceeds from Sale of Buildings |  | 0 | 23,076
Gain (Loss) on Disposition of Property Plant Equipment, Excluding Oil and Gas Property and Timber Property |  | $ 0 | $ 6,894
The Premises at 555 N Research Place, Central Islip, NY [Member] |  |  |
Proceeds from Sale of Buildings | $ 24,400 |  |
Gain (Loss) on Disposition of Property Plant Equipment, Excluding Oil and Gas Property and Timber Property | 6,900 |  |
Proceeds from Sale of Buildings, Net | 14,000 |  |
The Premises at 555 N Research Place, Central Islip, NY [Member] | HSBC Bank Second Mortgage Loan [Member] |  |  |
Repayments of Debt | $ 9,400 |  |

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- Definition Amount of gain (loss) on sale or disposal of property, plant and equipment assets, excluding oil and gas property and timber property. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI https://asc.fasb.org/extlink&oid=126954810&loc=d3e3602-108585 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -SubTopic 10 -Section 45 -Paragraph 5 -URI https://asc.fasb.org/extlink&oid=126905981&loc=d3e2443-110228 Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -SubTopic 10 -Section 50 -Paragraph 3 -Subparagraph (c) -URI https://asc.fasb.org/extlink&oid=109226691&loc=d3e2941-110230 + Details
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