Nature of Business and Basis of Presentation (Tables)

9 Months Ended

Sep. 30, 2013

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Schedule of Error Corrections and Prior Period Adjustments [Table Text Block]

The effect of the revisions to the consolidated statements of cash flows for the nine months ended September 30, 2012, is as follows (in thousands):

	As Previously Reported		Adjustment		As Revised
Cash flows from operating activities:
Changes in operating assets and liabilities, net of effects from acquisitions:
Prepaid expenses and other current assets	11,103		(1,093	)	10,010
Accounts payable and accrued expenses	54,732		(5,583	)	49,149
Other non-current assets and liabilities	(536	)	432		(104	)
Net cash provided by operating activities	383,551		(6,244	)	377,307
Cash flows from investing activities:
Purchases of property and equipment	(119,256	)	140		(119,116	)
Other non-current assets and liabilities	—		979		979
Net cash used in investing activities	(669,346	)	1,119		(668,227	)
Cash flows from financing activities:
Proceeds related to the issuance of common stock under stock plans	28,635		5,125		33,760
Net cash used in financing activities	(91,991	)	5,125		(86,866	)
Net decrease in cash and cash equivalents	(376,547	)	—		(376,547	)

The effect of the revisions to the consolidated statements of operations for the three and nine months ended September 30, 2012, is as follows (in thousands):

	Three Months Ended							Nine Months Ended
	As Previously Reported		Adjustment			As Revised		As Previously Reported		Adjustment			As Revised
Cost of revenue	$	109,995	$	24,226		$	134,221	$	320,018	$	70,388		$	390,406
Research and development	19,351		—			19,351		54,373		—			54,373
Sales and marketing	75,924		(20,718		)	55,206		219,096		(58,415		)	160,681
General and administrative	54,511		(3,508		)	51,003		168,214		(11,973		)	156,241
Amortization of acquired intangible assets	5,381		—			5,381		15,611		—			15,611
Restructuring charges	—		—			—		14		—			14
Total costs and operating expenses	$	265,162	$	—		$	265,162	$	777,326	$	—		$	777,326