Restructuring, Acquisition and Integration (Tables)

12 Months Ended

Dec. 31, 2017

Summary of Changes to Restructuring Accrual

The following table represents a summary of and changes to the restructuring accrual, which is primarily composed of accrued severance and other employee costs and contractual obligations that related to excess leased facilities (in thousands):

	Employee severance & termination benefits			Contractual obligations and other			Write-off of property, plant  and equipment			Total
Balance at December 31, 2015	$	3		$	87		$	—		$	90
Restructuring charges		92,246			3,379			716			96,341
Cash payments / adjustments		(64,363	)		(1,223	)		—			(65,586	)
Non-cash expense		—			—			(716	)		(716	)
Balance at December 31, 2016	$	27,886		$	2,243		$	—		$	30,129
Restructuring charges		13,346			5,742			1,842			20,930
Cash payments / adjustments		(35,955	)		(4,683	)		—			(40,638	)
Non-cash expense		(898	)		—			(1,842	)		(2,740	)
Balance at December 31, 2017	$	4,379		$	3,302		$	—		$	7,681