Note 6 - Property, Plant and Equipment (Details) - Property, Plant and Equipment (USD $) In Thousands, unless otherwise specified	Sep. 30, 2013	Dec. 31, 2012
Property, Plant and Equipment [Line Items]
Total property, plant and equipment	$ 11,702	$ 4,076
Held and Used [Member]
Property, Plant and Equipment [Line Items]
Machinery and equipment	11,241	6,643
Building and improvements	4,324	4,324
Furniture, office equipment & other	1,669	1,930
Leased assets	1,593
Construction in progress	4,345
	23,172	12,897
Less accumulated depreciation	(11,470)	(8,821)
Total property, plant and equipment	11,702	4,076
Held and Not Used [Member]
Property, Plant and Equipment [Line Items]
Machinery and equipment		4,249
Less accumulated depreciation		(2,392)
Total property, plant and equipment		$ 1,857