Note 16 - Restructuring Activities (Details) - Activity in Restructuring Liabilities (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013	Dec. 31, 2013	Dec. 31, 2012
Restructuring Cost and Reserve [Line Items]
Balance - Restructuring Liability	$ 1,311	$ 2,077	$ 2,029	$ 632
Charges to Expense	0	1,606
Cash Payments	(718)	(142)
Non-cash Adjustments		(19)
Total Costs and Adjustments	(718)	1,445
Graphic Solutions [Member] | Severance and Other Benefits [Member]
Restructuring Cost and Reserve [Line Items]
Balance - Restructuring Liability	497	1,447	699
Charges to Expense		1,504
Cash Payments	(202)	(57)
Total Costs and Adjustments	(202)	1,447
Graphic Solutions [Member]
Restructuring Cost and Reserve [Line Items]
Balance - Restructuring Liability	497	1,447	699
Charges to Expense		1,504
Cash Payments	(202)	(57)
Total Costs and Adjustments	(202)	1,447
Performance Materials [Member] | Severance and Other Benefits [Member]
Restructuring Cost and Reserve [Line Items]
Balance - Restructuring Liability	814	630	1,330	632
Charges to Expense		102
Cash Payments	(516)	(85)
Non-cash Adjustments		(19)
Total Costs and Adjustments	(516)	(2)
Performance Materials [Member]
Restructuring Cost and Reserve [Line Items]
Balance - Restructuring Liability	814	630	1,330	632
Charges to Expense		102
Cash Payments	(516)	(85)
Non-cash Adjustments		(19)
Total Costs and Adjustments	$ (516)	$ (2)