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

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.

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

Name:	us-gaap_DepreciationDepletionAndAmortization
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration