Segment Information Assets (Detail) (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Total assets:
Total Assets	$ 538,039,000	$ 466,495,000
Total capital expenditures	8,932,000	11,818,000	65,000
Steel Energy
Total assets:
Total Assets	243,746,000	199,889,000
Total capital expenditures	5,846,000	11,090,000
Steel Sports
Total assets:
Total Assets	20,495,000	7,613,000
Total capital expenditures	3,086,000	728,000
Equity method investments	3,700,000
Corporate
Total assets:
Total Assets	273,798,000	258,993,000
Equity method investments	$ 4,700,000