Goodwill and Other Intangible Assets Goodwill Reconciliation (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
Dec. 31, 2014	Dec. 31, 2013
Goodwill [Roll Forward]
Balance at beginning of period	$ 67,530us-gaap_Goodwill	$ 53,093us-gaap_Goodwill
Acquisitions	0us-gaap_GoodwillAcquiredDuringPeriod	16,170us-gaap_GoodwillAcquiredDuringPeriod
Adjustment to fair value	0	1,844
Impairments	(36,666)	(3,577)
Balance at end of period	30,864us-gaap_Goodwill	67,530us-gaap_Goodwill
Energy segment:
Goodwill [Roll Forward]
Balance at beginning of period	65,359	52,939
Acquisitions	0	10,576
Adjustment to fair value	0	1,844
Impairments	(36,666)	0
Balance at end of period	28,693	65,359
Sports segment:
Goodwill [Roll Forward]
Balance at beginning of period	2,171	154
Acquisitions	0	5,594
Adjustment to fair value	0	0
Impairments	0	(3,577)
Balance at end of period	$ 2,171	$ 2,171

Discontinued Operations, Goodwill, Impairment Loss

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- Definition

Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 350

-SubTopic 20

-Section 50

-Paragraph 1

-URI http://asc.fasb.org/extlink&oid=35741047&loc=d3e13816-109267

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 350

-SubTopic 20

-Section 45

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- Definition

Amount of increase in asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized resulting from a business combination.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 350

-SubTopic 20

-Section 50

-Paragraph 1

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- Definition

Amount of increase (decrease) from foreign currency translation adjustments and purchase accounting adjustments of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 350

-SubTopic 20

-Section 50

-Paragraph 1

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