Restructuring Charges (Tables)

3 Months Ended

Mar. 31, 2018

Restructuring And Related Activities [Abstract]

Changes to Restructuring Liability by Major Restructuring Activity

Changes to the restructuring liability by major restructuring activity are as follows:

	GES						Other Restructurings
(in thousands)	Severance & Employee Benefits			Facilities			Severance & Employee Benefits			Total
Balance at December 31, 2017	$	1,551		$	807		$	191		$	2,549
Restructuring charges		32			—			130			162
Cash payments		(167	)		(20	)		(295	)		(482	)
Adjustment to liability		451			(451	)		(14	)		(14	)
Balance at March 31, 2018	$	1,867		$	336		$	12		$	2,215