Property and Equipment (Tables)

6 Months Ended

Jun. 30, 2011

Property and Equipment (Tables) [Abstract]

Property and equipment

	As of			As of
	June 30,			December 31,
	2011			2010
Land	$	8,282		$	8,282
Land improvements		1,597			1,597
Buildings		51,044			48,323
Equipment under capital leases		4,502			4,502
Leasehold improvements		13,501			11,407
Computer equipment		40,166			36,742
Furniture, fixtures and equipment		12,368			11,401
Internally developed software		5,467			3,825
Other		1,098			998
Construction in progress		55,394			21,349
		193,419			148,426
Less accumulated depreciation and amortization		(31,887	)		(24,427	)
Property and equipment, net	$	161,532		$	123,999