Segment Information Operating Results (Detail) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Revenues
Revenues	$ 120,028	$ 100,104	$ 2,502
Operating income (loss)
Operating income (loss)	2,562	5,817	(8,511)
Corporate and other business activities	(32,081)	(28,223)	(9,554)
Interest income, net	3,079	1,486	4,083
Other income (expense), net	1,408	(836)	4,270
Income from continuing operations before income taxes	7,049	6,467	(158)
Depreciation and amortization	19,185	15,303	369
Steel Energy
Revenues
Revenues	109,624	97,191	1,417
Operating income (loss)
Operating income (loss)	12,381	16,837	165
Depreciation and amortization	18,392	14,785	144
Steel Sports
Revenues
Revenues	10,404	2,913	1,085
Operating income (loss)
Operating income (loss)	(1,408)	(2,061)	(354)
Depreciation and amortization	793	518	225
Total Segment
Operating income (loss)
Operating income (loss)	10,973	14,776	(189)
Corporate
Operating income (loss)
Corporate and other business activities	$ (8,411)	$ (8,959)	$ (8,322)