Restructuring

During the six months ended June 30, 2012 we recorded restructuring charges of $5.4 million consisting primarily of asset impairments. During the six months ended June 30, 2011 we recorded restructuring charges of $3.0 million consisting primarily of employee separation costs and asset impairment charges. The following table summarizes the components of the restructuring charges for the three and six months ended June 30, 2012 (in thousands):



	Three months ended June 30, 2012								Six months ended June 30, 2012
	Accruals			Non-cash items		Total			Accruals			Non-cash		Total
Employee separation costs	$	1		$	—	$	1		$	1		$	—	$	1
Asset impairments	(218		)	5,512		5,294			(218		)	5,512		5,294
Facilities related expenses	(74		)	—		(74		)	(74		)	—		(74		)
Other restructuring charges	33			—		33			184			—		184
	$	(258	)	$	5,512	$	5,254		$	(107	)	$	5,512	$	5,405

The following table sets forth activity in the restructuring liability for recent restructuring activities for the six months ended June 30, 2012, which is comprised of employee separation costs and facilities-related charges (in thousands):



	Employee separation costs			Facilities related charges			Other restructuring charges			Total
Balance at December 31, 2011	$	2,145		$	30,137		$	—		$	32,282
Accruals	—			77			(184		)	(107		)
Payments	(2,145		)	(5,478		)	184			(7,439		)
Accretion of sub-lease expense	—			1,429			—			1,429
Balance at June 30, 2012	$	—		$	26,165		$	—		$	26,165

We are continuing to assess our facility requirements for our San Diego campus as a result of this and our prior restructurings and could record additional facilities-related charges over the next several quarters.