Warranty Reserve (Tables)

9 Months Ended

Sep. 30, 2013

Component of Accrued Warranty Expenses

Accrued warranty expense (in thousands of dollars), which is included in accrued liabilities on the condensed consolidated balance sheets, as of September 30, 2013 and 2012, was as follows:

	2013			2012
Accrued warranty balance – January 1,	$	690		$	564
Warranty costs incurred		(854	)		(895	)
Provision for warranty expense		926			1024
Accrued warranty balance – September 30,	$	762		$	693