Note 18 - Reportable Segments (Details)	3 Months Ended
	Mar. 31, 2015
Display Technologies [Member]
Note 18 - Reportable Segments (Details) [Line Items]
Number of Customers Individually Accounting for 10% or More of Each Segment's Sales	3
Percent of Total Segment Sales	62.00%
Optical Communications [Member]
Note 18 - Reportable Segments (Details) [Line Items]
Number of Customers Individually Accounting for 10% or More of Each Segment's Sales	1
Percent of Total Segment Sales	10.00%
Environmental Technologies [Member]
Note 18 - Reportable Segments (Details) [Line Items]
Number of Customers Individually Accounting for 10% or More of Each Segment's Sales	3
Percent of Total Segment Sales	86.00%
Specialty Materials [Member]
Note 18 - Reportable Segments (Details) [Line Items]
Number of Customers Individually Accounting for 10% or More of Each Segment's Sales	3
Percent of Total Segment Sales	60.00%
Life Sciences [Member]
Note 18 - Reportable Segments (Details) [Line Items]
Number of Customers Individually Accounting for 10% or More of Each Segment's Sales	2
Percent of Total Segment Sales	45.00%
Minimum [Member]
Note 18 - Reportable Segments (Details) [Line Items]
Number of Material Formulations	150