Note 6 - Derivative Instruments (Details) - Impact to Consolidated Statements of Operations of Derivatives (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012
Note 6 - Derivative Instruments (Details) - Impact to Consolidated Statements of Operations of Derivatives [Line Items]
Derivative	$ (113)	$ (5)	$ (155)	$ (16)
Interest Rate Swap [Member]
Note 6 - Derivative Instruments (Details) - Impact to Consolidated Statements of Operations of Derivatives [Line Items]
Derivative	(71)	(5)	(113)	(16)
Fixed Interest Rate Swap [Member]
Note 6 - Derivative Instruments (Details) - Impact to Consolidated Statements of Operations of Derivatives [Line Items]
Derivative	(42)	0	(42)	0
Nickel Swaps [Member]
Note 6 - Derivative Instruments (Details) - Impact to Consolidated Statements of Operations of Derivatives [Line Items]
Derivative	938	(164)	1,015	(229)
Embedded Customer Derivatives [Member]
Note 6 - Derivative Instruments (Details) - Impact to Consolidated Statements of Operations of Derivatives [Line Items]
Derivative	$ (938)	$ 164	$ (1,015)	$ 229