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, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Note 6 - Derivative Instruments (Details) - Impact to Consolidated Statements of Operations of Derivatives [Line Items]
Gain (loss) on derivatives	$ (151)	$ (156)	$ (443)	$ (311)
Interest Rate Swap [Member] | ABL Credit Facility [Member]
Note 6 - Derivative Instruments (Details) - Impact to Consolidated Statements of Operations of Derivatives [Line Items]
Gain (loss) on derivatives	(118)	(135)	(363)	(177)
Interest Rate Swap [Member] | Chicago Tube and Iron Company Acquisition [Member]
Note 6 - Derivative Instruments (Details) - Impact to Consolidated Statements of Operations of Derivatives [Line Items]
Gain (loss) on derivatives	(33)	(21)	(80)	(134)
Metals Swap [Member]
Note 6 - Derivative Instruments (Details) - Impact to Consolidated Statements of Operations of Derivatives [Line Items]
Gain (loss) on derivatives	(467)	35	1,305	(981)
Embedded Derivative Financial Instruments [Member]
Note 6 - Derivative Instruments (Details) - Impact to Consolidated Statements of Operations of Derivatives [Line Items]
Gain (loss) on derivatives	$ 467	$ (35)	$ (1,305)	$ 981