Accrued Liabilities (Tables)

6 Months Ended

Jun. 30, 2012

Accrued Liabilities

Accrued liabilities consist of the following:

	As of June 30, 2012		As of December 31, 2011
Accrued compensation and benefits	$	7,888	$	10,665
Accrued warranties		2,445		2,365
Professional and legal fees		1,478		966
Other accrued liabilities		3,863		4,080
	$	15,674	$	18,076

Accrued Warranties

Activity related to accrued warranties was as follows:

	Six Months Ended
	June 30, 2012			July 2, 2011
Beginning Balance	$	2,365		$	1,857
Provision for warranty expense		1,457			1,170
Warranty expired		(1,377	)		(811	)
Ending Balance	$	2,445		$	2,216