Basis of Presentation and Principles of Consolidation (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended				6 Months Ended
	Jun. 30, 2014		Jun. 30, 2013		Jun. 30, 2014		Jun. 30, 2013
Accounts payable	$ (43,605)		$ (40,389)		$ (70,995)		$ (55,458)
Net cash flows from operating activities	62,833	[1]	30,174	[1]	157,420	[1]	86,178	[1]
Purchases of property and equipment	(26,076)		(36,111)		(53,016)		(84,244)
Net cash flows from investing activities	(25,114)	[1]	19,589	[1]	(61,723)	[1]	(95,317)	[1]
Purchases of property and equipment included in ending accounts payable	1,724		9,460		1,724		9,460
As Reported [Member]
Accounts payable			(41,001)				(70,972)
Net cash flows from operating activities			29,562				70,664
Purchases of property and equipment			(35,499)				(68,730)
Net cash flows from investing activities			20,201				(79,803)
Purchases of property and equipment included in ending accounts payable			26,829				26,829
Adjustment [Member]
Accounts payable			612				15,514
Net cash flows from operating activities			612				15,514
Purchases of property and equipment			(612)				(15,514)
Net cash flows from investing activities			(612)				(15,514)
Purchases of property and equipment included in ending accounts payable			$ (17,369)				$ (17,369)

[1] During 2013, we discontinued four ventures previously included in our New Ventures operating segment, Orango, Rubi, Crisp Market, and Star Studio. Cash flows from these discontinued operations are not segregated from cash flows from continuing operations in all periods presented because they were not material.