Segments (Tables)

9 Months Ended

Sep. 30, 2015

Segment Reporting [Abstract]

Reconciliation of Revenues and Income from Segments to Consolidated

Information presented below is in thousands:

	Three Months Ended September 30,						Nine Months Ended September 30,
	2015			2014			2015			2014
Service revenues
Product Development	$	810,045		$	771,361		$	2,345,971		$	2,323,376
Integrated Healthcare Services		283,435			289,652			851,849			778,401
Total service revenues		1,093,480			1,061,013			3,197,820			3,101,777
Costs of revenue, service costs
Product Development		461,858			458,731			1,352,730			1,374,492
Integrated Healthcare Services		221,200			232,320			676,000			634,795
Total costs of revenue, service costs		683,058			691,051			2,028,730			2,009,287
Selling, general and administrative
Product Development		166,758			154,460			478,643			471,697
Integrated Healthcare Services		38,186			37,447			114,953			103,069
General corporate and unallocated		26,471			27,120			83,323			82,517
Total selling, general and administrative		231,415			219,027			676,919			657,283
Income from operations
Product Development		181,429			158,170			514,598			477,187
Integrated Healthcare Services		24,049			19,885			60,896			40,537
General corporate and unallocated		(26,471	)		(27,120	)		(83,323	)		(82,517	)
Restructuring costs		(11,984	)		(1,793	)		(23,542	)		(3,749	)
Total income from operations	$	167,023		$	149,142		$	468,629		$	431,458

Depreciation and Amortization Expense

	Three Months Ended September 30,				Nine Months Ended September 30,
	2015		2014		2015		2014
Depreciation and amortization expense
Product Development	$	26,681	$	23,106	$	74,110	$	69,867
Integrated Healthcare Services		5,118		5,803		15,497		15,548
General corporate and unallocated		1,085		1,271		3,617		3,698
Total depreciation and amortization expense	$	32,884	$	30,180	$	93,224	$	89,113