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
	Mar. 31, 2014	Mar. 31, 2013	Jun. 30, 2014	Jun. 30, 2013
Note 6 - Derivative Instruments (Details) - Impact to Consolidated Statements of Operations of Derivatives [Line Items]
Gain (loss) on derivatives	$ (139)	$ (113)	$ (292)	$ (155)
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	(121)	(42)	(245)	(42)
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	(18)	(71)	(47)	(113)
Metals Swap [Member]
Note 6 - Derivative Instruments (Details) - Impact to Consolidated Statements of Operations of Derivatives [Line Items]
Gain (loss) on derivatives	1,117	(938)	1,772	(1,015)
Embedded Derivative Financial Instruments [Member]
Note 6 - Derivative Instruments (Details) - Impact to Consolidated Statements of Operations of Derivatives [Line Items]
Gain (loss) on derivatives	$ (1,117)	$ 938	$ (1,772)	$ 1,015