Note 7 - Fair Value of Financial Instruments (Details) - Fair Value Measurements, Recorded (Fair Value, Measurements, Recurring [Member], USD $) In Thousands, unless otherwise specified	Jun. 30, 2014	Dec. 31, 2013
Assets:
Total assets at fair value	$ 842	$ 614
Liabilities:
Embedded customer derivatives	842	614
Total liabilities at fair value	1,660	1,603
Fair Value, Inputs, Level 2 [Member] | Metals Swap [Member]
Assets:
Metals swaps	842	614
Fair Value, Inputs, Level 2 [Member] | Interest Rate Swap [Member] | ABL Credit Facility [Member]
Liabilities:
Interest rate swap	586	710
Fair Value, Inputs, Level 2 [Member] | Interest Rate Swap [Member] | Chicago Tube and Iron Company Acquisition [Member]
Liabilities:
Interest rate swap	232	279
Fair Value, Inputs, Level 2 [Member]
Assets:
Total assets at fair value	842	614
Liabilities:
Embedded customer derivatives	842	614
Total liabilities at fair value	1,660	1,603
Metals Swap [Member]
Assets:
Metals swaps	842	614
Interest Rate Swap [Member] | ABL Credit Facility [Member]
Liabilities:
Interest rate swap	586	710
Interest Rate Swap [Member] | Chicago Tube and Iron Company Acquisition [Member]
Liabilities:
Interest rate swap	$ 232	$ 279