Real Estate Charges (Tables)

12 Months Ended

Dec. 31, 2015

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 the following periods is as follows:

	Year Ended December 31,
	2015			2014
	(in thousands)
Balance as of January 1,	$	148,429		$	199,527
Expense (credit) incurred	2,258			(4,755		)
Payments made	(38,920		)	(50,893		)
Interest accretion	4,297			4,550
Balance as of end of period	$	116,064		$	148,429