Goodwill and Other Intangible Assets Intangible Assets, Net (Detail) - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
Finite-Lived Intangible Assets [Line Items]
Cost	$ 54,269	$ 61,621
Accumulated Amortization	(34,050)	(25,839)
Net	20,219	35,782
Energy segment:
Finite-Lived Intangible Assets [Line Items]
Cost	52,058	59,410
Accumulated Amortization	(32,800)	(25,124)
Net	19,258	34,286
Sports segment:
Finite-Lived Intangible Assets [Line Items]
Cost	2,211	2,211
Accumulated Amortization	(1,250)	(715)
Net	961	1,496
Customer relationships | Energy segment:
Finite-Lived Intangible Assets [Line Items]
Cost	47,078	54,430
Accumulated Amortization	(28,966)	(21,938)
Net	18,112	32,492
Customer relationships | Sports segment:
Finite-Lived Intangible Assets [Line Items]
Cost	2,089	2,089
Accumulated Amortization	(1,189)	(678)
Net	900	1,411
Trade names | Energy segment:
Finite-Lived Intangible Assets [Line Items]
Cost	4,860	4,860
Accumulated Amortization	(3,785)	(3,161)
Net	1,075	1,699
Trade names | Sports segment:
Finite-Lived Intangible Assets [Line Items]
Cost	122	122
Accumulated Amortization	(61)	(37)
Net	61	85
Non-compete agreement | Energy segment:
Finite-Lived Intangible Assets [Line Items]
Cost	120	120
Accumulated Amortization	(49)	(25)
Net	$ 71	$ 95