Note 5 - Goodwill and Other Intangible Assets - Carrying Value of Goodwill by Reportable Segments (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023
Goodwill	$ 12,000	$ 12,000
Impairment	0	0
Gross goodwill	76,000
Accumulated impairment losses	(64,000)
Goodwill	12,000	12,000
Print [Member]
Goodwill	6,000	6,000
Impairment	0	0
Gross goodwill	62,000
Accumulated impairment losses	(56,000)
Goodwill	6,000	6,000
Advanced Materials And Chemicals [Member]
Goodwill	0	0
Impairment	0	0
Gross goodwill	8,000
Accumulated impairment losses	(8,000)
Goodwill	0	0
Brand [Member]
Goodwill	6,000	6,000
Impairment	0	0
Gross goodwill	6,000
Accumulated impairment losses	0
Goodwill	$ 6,000	$ 6,000