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Note 5 - Property, Plant and Equipment | 12 Months Ended
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Dec. 31, 2022
Notes to Financial Statements |
Property, Plant and Equipment Disclosure [Text Block] | Note 5 – Property, Plant and Equipment Major classes of property, plant and equipment consist of the following as of December 31 (in thousands):
|  | 2022 |  |  | 2021 |
Land |  | $ | 2,220 |  |  | $ | 2,220 |
Buildings and improvements |  |  | 12,530 |  |  |  | 12,477 |
Machinery and equipment |  |  | 7,810 |  |  |  | 6,879 |
Construction in progress |  |  | 12 |  |  |  | 127 |
Totals at cost |  |  | 22,572 |  |  |  | 21,703 |
Less: accumulated depreciation |  |  | (9,976 | ) |  |  | (9,441 | )
Property, plant and equipment, net |  | $ | 12,596 |  |  | $ | 12,261 |
Machinery and equipment also includes furniture and fixtures and software. Depreciation expense was $0.8 million and $0.6 million for the years ended December 31, 2022 and 2021, respectively. On March 29, 2021, the Company entered into an agreement with a third party for the sale of its facility located at 555 S. Technology Drive in Central Islip, New York (the “555 Building”), and on July 26, 2021, the Company closed on the sale. The sale price was $24.4 million, subject to adjustment for apportionments, adjustments, and credits. A portion of the sale proceeds was used to satisfy the existing mortgage debt on the 555 Building, including interest and fees, in the amount of $9.4 million, as well as various costs related to the closing of the transaction. The Company recognized a gain on the sale of the building in the amount of $6.9 million and received approximately $14.0 million in net proceeds. Management had determined the 555 Building was not needed for business operations, and the remaining elements of the CVD Materials business located in the 555 Building were consolidated into the 355 Building.

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- Definition The entire disclosure for long-lived, physical asset used in normal conduct of business and not intended for resale. Includes, but is not limited to, work of art, historical treasure, and similar asset classified as collections. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 958 -SubTopic 360 -Section 50 -Paragraph 6 -URI https://asc.fasb.org/extlink&oid=126982197&loc=d3e99893-112916 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -URI https://asc.fasb.org/topic&trid=2155823 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 958 -SubTopic 360 -Section 50 -Paragraph 7 -URI https://asc.fasb.org/extlink&oid=126982197&loc=SL120174063-112916 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 958 -SubTopic 360 -Section 50 -Paragraph 1 -Subparagraph (d) -URI https://asc.fasb.org/extlink&oid=126982197&loc=d3e99779-112916 + Details
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