9. RESTRUCTURING

In prior years, we implemented significant restructuring plans that resulted in substantial charges for our real estate obligations. In addition, during the year ended December 31, 2011, we recorded initial restructuring charges related to our ceased use of office facilities, as well as subsequent plan adjustments in sublease income assumptions for certain properties included in our previously-disclosed restructuring plans. We included these initial restructuring charges and subsequent plan adjustments in “Restructuring and Impairments” on the accompanying consolidated statements of operations.

The following table displays the activity and balances for the restructuring and asset impairment activity during the years ended December 31, 2011 and 2010 (in thousands):

	December 31, 2010 Restructuring Liability		Initial Restructuring Charges		Subsequent Plan Adjustments		Cash Payments			December 31, 2011 Restructuring Liability
Activity for 2011 restructuring charge:
Real estate obligations	$	—	$	421	$	60	$	(120	)	$	361
Activity for 2010 restructuring charge:
Real estate obligations		12		—		—		(12	)		—
Activity for 2007 restructuring charge:
Real estate obligations		5,635		—		1,124		(1,597	)		5,162
Activity for 2001 restructuring charge:
Real estate obligations		2,317		—		474		(721	)		2,070
	$	7,964	$	421	$	1,658	$	(2,450	)	$	7,593

	December 31, 2009 Restructuring Liability		Initial Restructuring Charges		Subsequent Plan Adjustments			Cash Payments			December 31, 2010 Restructuring Liability
Activity for 2010 restructuring charge:
Real estate obligations	$	—	$	36	$	(5	)	$	(19	)	$	12
Activity for 2009 restructuring charge:
Employee terminations		36		—		18			(54	)		—
Real estate obligations		178		—		11			(189	)		—
Activity for 2007 restructuring charge:
Real estate obligations		6,248		—		938			(1,551	)		5,635
Activity for 2001 restructuring charge:
Real estate obligations		2,480		—		438			(601	)		2,317
	$	8,942	$	36	$	1,400		$	(2,414	)	$	7,964