Note 16 - Segment Information (Details Textual) $ in Thousands	3 Months Ended	9 Months Ended
Sep. 30, 2024 USD ($) a	Sep. 30, 2023 USD ($)	Sep. 30, 2024 USD ($) a	Sep. 30, 2023 USD ($)
Number of Reportable Segments			3
Restructuring Charges	$ 1,000	$ 1,000	$ 6,000	$ 7,000
Consulting and Other Costs		1,000		12,000
Increase (Decrease) in Employee Related Liabilities	2,000	(3,000)	1,000	(3,000)
Cost of Sales [Member]
Inventory Write-down		2,000		2,000
Selling, General and Administrative Expenses [Member]
Increase (Decrease) in Employee Related Liabilities	1,000	1,000	0	(2,000)
Gross Profit [Member]
Increase (Decrease) in Employee Related Liabilities	$ 1,000	$ 2,000	$ 0	$ (1,000)
Eastman Business Park Rochester N Y [Member] \| Minimum [Member]
Area of Real Estate Property (Acre) \| a	1,200		1,200
Print [Member]
Number of Business Lines			5
Advanced Materials And Chemicals [Member]
Number of Reportable Segments			4

Consulting and Other Costs.

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- Definition

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+ References

No definition available.

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- Definition

Area of a real estate property.

+ References

No definition available.

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- Definition

The increase (decrease) during the reporting period in the aggregate amount of obligations related to services received from employees, such as accrued salaries and bonuses, payroll taxes and fringe benefits.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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Amount of loss from reductions in inventory due to subsequent measurement adjustments, including, but not limited to, physical deterioration, obsolescence, or changes in price levels.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition

Number of segments reported by the entity. A reportable segment is a component of an entity for which there is an accounting requirement to report separate financial information on that component in the entity's financial statements.

+ References

Reference 1: http://www.xbrl.org/2003/role/exampleRef
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- Definition

Amount of expenses associated with exit or disposal activities pursuant to an authorized plan. Excludes expenses related to a discontinued operation or an asset retirement obligation.

+ References

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