Warranty Reserve (Tables)

12 Months Ended

Dec. 31, 2012

Component of Accrued Warranty Expenses

Set forth in the table below is our accrued warranty expense (in thousands), which is included in accrued liabilities on the consolidated balance sheet:

	As of December 31,
	2012			2011
Accrued warranty balance as of January 1,	$	564		$	469
Warranty costs incurred		(1,214	)		(878	)
Provision for warranty claims		1,340			973
Accrued warranty balance as of December 31,	$	690		$	564