Summary of Significant Accounting Policies Summary of Significant Accounting Policies (Tables)

12 Months Ended

Dec. 31, 2017

Accounting Policies [Abstract]

Schedule of Impact of ASU 606 Adoption

As a result, the following financial statement line items for 2017, 2016 and 2015 were affected:

Consolidated Statement of Operations

	For the year ended December 31, 2017 (in thousands)
	As adjusted under Topic 606		As originally reported		Effect of change
Revenue from services	$	782,710	$	889,076	$	(106,366	)
Revenue from transfer of intellectual property and other	75,537		70,668		4,869
Selling, general and administrative	414,628		520,994		(106,366		)
Research and development	126,435		125,186		1,249

	For the year ended December 31, 2016 (in thousands)
	As adjusted under Topic 606		As originally reported		Effect of change
Revenue from services	$	928,572	$	1,012,129	$	(83,557	)
Revenue from transfer of intellectual property and other	105,455		126,065		(20,610		)
Selling, general and administrative	407,331		490,888		(83,557		)
Research and development	113,871		111,205		2,666

	For the year ended December 31, 2015 (in thousands)
	As adjusted under Topic 606		As originally reported		Effect of change
Revenue from services	$	305,301	$	329,739	$	(24,438	)
Revenue from transfer of intellectual property and other	62,070		81,853		(19,783		)
Selling, general and administrative	172,138		196,576		(24,438		)
Research and development	101,804		99,488		2,316

Consolidated Balance Sheet

	December 31, 2017 (in thousands)
	As adjusted under Topic 606			As originally reported			Effect of change
Other current assets and prepaid expenses	$	42,513		$	37,113		$	5,400
Accrued expenses	225,796			215,102			10,694
Other long-term liabilities, principally contract liabilities, contingent consideration and line of credit	256,415			219,954			36,461
Accumulated deficit	(1,048,914		)	(1,007,159		)	(41,755		)

	December 31, 2016 (in thousands)
	As adjusted under Topic 606			As originally reported			Effect of change
Accrued expenses	$	174,679		$	197,955		$	(23,276	)
Other long-term liabilities, principally contract liabilities, contingent consideration and line of credit	271,134			202,483			68,651
Accumulated deficit	(775,329		)	(729,954		)	(45,375		)

Consolidated Statement of Cash Flows

	For the year ended December 31, 2017 (in thousands)
	As adjusted under Topic 606			As originally reported			Effect of change
Net loss	$	(305,250	)	$	(308,870	)	$	3,620
Other current assets and prepaid expenses	4,771			10,171			(5,400		)
Contract liabilities	(58,876		)	(60,656		)	1,780

	For the year ended December 31, 2016 (in thousands)
	As adjusted under Topic 606			As originally reported			Effect of change
Net loss	$	(48,359	)	$	(25,083	)	$	(23,276	)
Contract liabilities	(50,893		)	(74,169		)	23,276

	For the year ended December 31, 2015 (in thousands)
	As adjusted under Topic 606			As originally reported			Effect of change
Net loss	$	(53,527	)	$	(31,428	)	$	(22,099	)
Contract liabilities	249,770			227,671			22,099