Goodwill and Other Intangible Assets Intangible Assets, Net (Detail) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Finite-Lived Intangible Assets [Line Items]
Cost	$ 61,621	$ 60,695
Accumulated Amortization	(25,839)	(16,257)
Net	35,782	44,438
Energy segment:
Finite-Lived Intangible Assets [Line Items]
Cost	59,410	59,410
Accumulated Amortization	(25,124)	(16,015)
Net	34,286	43,395
Sports segment:
Finite-Lived Intangible Assets [Line Items]
Cost	2,211	1,285
Accumulated Amortization	(715)	(242)
Net	1,496	1,043
Customer relationships \| Energy segment:
Finite-Lived Intangible Assets [Line Items]
Cost	54,430	54,430
Accumulated Amortization	(21,938)	(13,700)
Net	32,492	40,730
Customer relationships \| Sports segment:
Finite-Lived Intangible Assets [Line Items]
Cost	2,089	1,163
Accumulated Amortization	(678)	(230)
Net	1,411	933
Trade names \| Energy segment:
Finite-Lived Intangible Assets [Line Items]
Cost	4,860	4,860
Accumulated Amortization	(3,161)	(2,315)
Net	1,699	2,545
Trade names \| Sports segment:
Finite-Lived Intangible Assets [Line Items]
Cost	122	122
Accumulated Amortization	(37)	(12)
Net	85	110
Non-compete agreement \| Energy segment:
Finite-Lived Intangible Assets [Line Items]
Cost	120	120
Accumulated Amortization	(25)	0
Net	$ 95	$ 120

Accumulated amount of amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 350

-SubTopic 30

-Section 50

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Sum of the carrying amounts of all intangible assets, excluding goodwill, as of the balance sheet date, net of accumulated amortization and impairment charges.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

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