Real Estate Charges

3 Months Ended

Mar. 31, 2018

Restructuring and Related Activities [Abstract]

Since 2010, we have sub-leased over one million square feet of office space. The activity in the liability account relating to our global space consolidation initiatives for the following periods is:



	Three Months Ended March 31, 2018			Twelve Months Ended December 31, 2017
	(in thousands)
Balance as of beginning of period	$	113,635		$	112,932
Expense incurred	(264		)	28,507
Deferred rent	—			7,083
Payments made	(8,981		)	(39,122		)
Interest accretion	1,090			4,235
Balance as of end of period	$	105,480		$	113,635