4. RESTRUCTURING

In prior years, we implemented significant restructuring plans that resulted in substantial charges for our real estate obligations. In addition, during the nine months ended September 30, 2011, we recorded initial restructuring charges related to our ceased use of an office facility, as well as subsequent plan adjustments in sublease income assumptions for certain properties included in our previously-disclosed restructuring plans. We include these initial restructuring charges and subsequent plan adjustments in “Restructuring” on the accompanying consolidated statements of operations.

The following table displays the restructuring activity and balances during the nine months ended September 30, 2011 (in thousands):


	December 31, 2010 Restructuring Liability		Initial Restructuring Charges		Subsequent Plan Adjustments		Cash Payments			September 30, 2011 Restructuring Liability
Activity for 2011 restructuring charge:
Real estate obligations	$	—	$	318	$	26	$	(67	)	$	277
Activity for 2010 restructuring charge:
Real estate obligations		12		—		—		(12	)		—
Activity for 2007 restructuring charge:
Real estate obligations		5,635		—		720		(1,216	)		5,139
Activity for 2001 restructuring charge:
Real estate obligations		2,317		—		405		(537	)		2,185

Total	$	7,964	$	318	$	1,151	$	(1,832	)	$	7,601