Warrany Costs (Tables)

9 Months Ended

Sep. 30, 2013

Accrued Liabilities, Current [Abstract]

Accrued Warranty Costs [Table Text Block]

The following is a reconciliation of the changes in accrued warranty costs for the reporting period (in thousands):

Balance as of January 1, 2013	$	21,451
Warranties provided during the period	7,843
Settlements made during the period	(8,741		)
Changes in liability for pre-existing warranties during the period, including expirations	4,467
Balance as of September 30, 2013	$	25,020