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Note 4 - Property, Plant and Equipment - Schedule of Property, Plant, and Equipment (Details) - USD ($) $ in Thousands	Mar. 31, 2025	Dec. 31, 2024
Land	$ 8,643	$ 8,642
Plant and buildings	184,088	182,724
Furniture and fixtures	2,805	2,686
Machinery and equipment	5,905	5,721
Construction in progress	46,947	46,201
Property held for development	15,431	15,431
Finance lease right of use assets	2,889	2,889
Total gross property, plant & equipment	266,708	264,294
Less accumulated depreciation	(67,273)	(64,902)
Total net property, plant & equipment	$ 199,435	$ 199,392

X

- Definition

Amount of finance lease right of use asset after amortization.

+ References

No definition available.

+ Details

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X

- Definition

Amount, before accumulated depreciation and amortization, of property, plant, and equipment and amount of finance lease right-of-use asset, after amortization.

+ References

No definition available.

+ Details

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X

- Definition

Amount of accumulated depreciation, depletion and amortization for physical assets used in the normal conduct of business to produce goods and services.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 944
-SubTopic 210
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-03(a)(8)(b))
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X

- Definition

Amount before accumulated depreciation of building structures held for productive use including addition, improvement, or renovation to the structure, including, but not limited to, interior masonry, interior flooring, electrical, and plumbing.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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-Section 50
-Paragraph 1
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-URI https://asc.fasb.org/1943274/2147482099/360-10-50-1

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X

- Definition

Amount of structure or a modification to a structure under construction. Includes recently completed structures or modifications to structures that have not been placed into service.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 360
-SubTopic 10
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-Section 50
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X

- Definition

Amount before accumulated depreciation of equipment commonly used in offices and stores that have no permanent connection to the structure of a building or utilities. Examples include, but are not limited to, desks, chairs, tables, and bookcases.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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-SubTopic 10
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-Section 50
-Paragraph 1
-Subparagraph (b)
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X

- Definition

Amount before accumulated depletion of real estate held for productive use, excluding land held for sale.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 210
-SubTopic 10
-Name Accounting Standards Codification
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-Paragraph 1
-Subparagraph (SX 210.5-02(13))
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X

- Definition

Amount before accumulated depreciation of tangible personal property used to produce goods and services, including, but is not limited to, tools, dies and molds, computer and office equipment.

+ References

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X

- Definition

Amount, after accumulated depreciation and amortization, of property, plant, and equipment and finance lease right-of-use asset.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 360
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X

- Definition

For banks, the total amount of real estate assets held for development and sale.

+ References

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