Segment Information - Assets (Detail) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2013	Dec. 31, 2012
Total assets:
Total Assets	$ 460,070	$ 466,495
Steel Sports [Member]
Total assets:
Total Assets	22,387	7,613
Steel Energy [Member]
Total assets:
Total Assets	193,296	199,889
Corporate [Member]
Total assets:
Total Assets	$ 244,387	$ 258,993