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Property And Equipment, Net (Narrative) (Detail) (USD $) In Thousands, unless otherwise specified | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2013 | Jun. 30, 2012 | Jun. 30, 2013 | Jun. 30, 2012
Property and Equipment [Line Items] |  |  |  |
Depreciation and amortization |  |  | $ 65,355 | $ 42,946
Segment, Continuing Operations [Member] |  |  |  |
Property and Equipment [Line Items] |  |  |  |
Depreciation and amortization | 33,602 | 21,763 | 65,355 | 42,480
Property and Equipment [Member] | Segment, Continuing Operations [Member] |  |  |  |
Property and Equipment [Line Items] |  |  |  |
Depreciation and amortization | $ 28,300 | $ 18,900 | $ 55,900 | $ 36,800

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- Definition The aggregate expense recognized in the current period that allocates the cost of tangible assets, intangible assets, or depleting assets to periods that benefit from use of the assets. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6943989&loc=d3e3602-108585 + Details
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Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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- Details
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Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration