Real Estate Charges (Tables)

12 Months Ended

Dec. 31, 2016

Restructuring and Related Activities [Abstract]

Real Estate Liability Account Activity Related to Workforce Reduction

The activity in the liability account relating to our 2010 and 2012 office space consolidation initiatives for 2016 and 2015 is as follows:

	Year Ended December 31,
	2016			2015
	(in thousands)
Balance as of January 1,	$	116,064		$	148,429
(Credit) expense incurred	(2,874		)	2,258
Payments made	(25,829		)	(38,920		)
Interest accretion	4,293			4,297
Balance as of end of period	$	91,654		$	116,064