Property And Equipment (Tables)

9 Months Ended

Sep. 30, 2011

Property And Equipment [Abstract]

Schedule Of Property And Equipment

	Estimated
	Useful Life		September 30,			December 31,
	(Years)		2011			2010
Computer equipment		3– 5	$	39,483		$	32,525
Office equipment		5		4,396			3,784
Furniture and fixtures		5		3,535			3,378
Leasehold improvements		3– 13		3,745			3,361
Total property and equipment, gross				51,159			43,048
Less: Accumulated depreciation				(30,379	)		(24,173	)
Total property and equipment, net			$	20,780		$	18,875

Schedule Of Depreciation Expense

	Three Months Ended September 30,				Nine Months Ended September 30,
	2011		2010		2011		2010
Depreciation expense	$	2,276	$	1,890	$	6,438	$	5,805