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Acquisitions (Details) (USD $)
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12 Months Ended | 1 Months Ended | 12 Months Ended | |||
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Dec. 31, 2013
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Dec. 31, 2011
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Dec. 31, 2012
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Jan. 31, 2013
NES
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Oct. 31, 2013
KVS
item
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Dec. 31, 2011
Peak
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| Preliminary Estimates for Allocation of Purchase Price as of Acquisition Date | ||||||
| Consideration paid in cash | $ 119,652,000 | $ 65,000,000 | $ 37,500,000 | $ 65,000,000 | ||
| Goodwill | 512,964,000 | 501,258,000 | 472,326,000 | 15,800,000 | ||
| Total Consideration | 149,000,000 | |||||
| Amount payable in future annual installments to acquire business | 66,800,000 | |||||
| Number of annual installments | 3 | |||||
| Equity interest acquired (as a percent) | 50.00% | |||||
| Previously held equity interest (as a percent) | 50.00% | |||||
| Previously held equity interest carrying value | $ 38,100,000 | |||||
| X | ||||||||||
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- Definition
Represents the number of future annual installments payable to acquire business. No definition available.
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- Definition
Represents the amount payable in future annual installments to acquire business. No definition available.
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- Details
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- Definition
Percentage of voting equity interests acquired at the acquisition date in the business combination. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Amount of consideration transferred, consisting of acquisition-date fair value of assets transferred by the acquirer, liabilities incurred by the acquirer, and equity interest issued by the acquirer. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Fair value at acquisition-date of the equity interest in the acquiree held by the acquirer, immediately before the acquisition date for businesses combined in stages. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Percentage of equity in the acquiree held by the acquirer immediately before the acquisition date in a business combination. No definition available.
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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. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
The cash outflow associated with the acquisition of business during the period. The cash portion only of the acquisition price. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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