Note 6 - Derivative Instruments (Details) - Impact to Consolidated Statements of Operations of Derivatives (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Note 6 - Derivative Instruments (Details) - Impact to Consolidated Statements of Operations of Derivatives [Line Items]
Derivative	$ (156)	$ 7	$ (311)	$ 23
Interest Rate Swap [Member]
Note 6 - Derivative Instruments (Details) - Impact to Consolidated Statements of Operations of Derivatives [Line Items]
Derivative	(21)	7	(134)	23
Fixed Interest Rate Swap [Member]
Note 6 - Derivative Instruments (Details) - Impact to Consolidated Statements of Operations of Derivatives [Line Items]
Derivative	(135)	0	(177)	0
Nickel Swaps [Member]
Note 6 - Derivative Instruments (Details) - Impact to Consolidated Statements of Operations of Derivatives [Line Items]
Derivative	35	245	(981)	16
Embedded Customer Derivatives [Member]
Note 6 - Derivative Instruments (Details) - Impact to Consolidated Statements of Operations of Derivatives [Line Items]
Derivative	$ (35)	$ (245)	$ 981	$ (16)