Warranty Liability (Tables)

12 Months Ended

Dec. 31, 2012

Warranty Liability

Schedule of rollforward of Company's warranty liability

	December 31,
	2012			2011			2010
Balance at the beginning of the period	$	4,188		$	3,399		$	3,040
Warranty provision		846			3,386			2,604
Claims paid/settlements		(1,406	)		(2,597	)		(2,245	)
Balance at the end of the period	$	3,628		$	4,188		$	3,399