Property and Equipment (Tables)

12 Months Ended

Dec. 31, 2013

Property, Plant and Equipment [Abstract]

Schedule of Property and equipment

Property and equipment, net consisted of the following:

	As of December 31,
	2013			2012
	(in thousands)
Buildings	$	506,056		$	—
Furniture and equipment	190,555			173,766
Leasehold improvements	163,019			123,770
Software	102,520			101,276
Computers	43,096			40,779
Construction-in-process	—			290,703
Total property and equipment, gross	1,005,246			730,294
Less: accumulated depreciation	(308,335		)	(296,685		)
Total property and equipment, net	$	696,911		$	433,609