Goodwill and Other Intangible Assets Intangible Assets, Net (Detail) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Finite-Lived Intangible Assets [Line Items]
Cost	$ 48,485	$ 47,435
Accumulated Amortization	(16,257)	(7,548)
Net	32,228	39,887
Energy segment:
Finite-Lived Intangible Assets [Line Items]
Cost	47,200	47,200
Accumulated Amortization	(16,015)	(7,481)
Net	31,185	39,719
Sports segment:
Finite-Lived Intangible Assets [Line Items]
Cost	1,285	235
Accumulated Amortization	(242)	(67)
Net	1,043	168
Customer relationships | Energy segment:
Finite-Lived Intangible Assets [Line Items]
Cost	43,100	43,100
Accumulated Amortization	(13,700)	(6,356)
Net	29,400	36,744
Customer relationships | Sports segment:
Finite-Lived Intangible Assets [Line Items]
Cost	1,163	235
Accumulated Amortization	(230)	(67)
Net	933	168
Trade names | Energy segment:
Finite-Lived Intangible Assets [Line Items]
Cost	4,100	4,100
Accumulated Amortization	(2,315)	(1,125)
Net	1,785	2,975
Trade names | Sports segment:
Finite-Lived Intangible Assets [Line Items]
Cost	122	0
Accumulated Amortization	(12)	0
Net	$ 110	$ 0