Warrany Costs (Tables)

3 Months Ended

Mar. 31, 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	3,048
Settlements made during the period	(3,030		)
Changes in liability for pre-existing warranties during the period, including expirations	219
Balance as of March 31, 2013	$	21,688