Warrany Costs (Tables)

3 Months Ended

Mar. 31, 2014

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, 2014	$	27,393
Warranties provided during the period	3,119
Settlements made during the period	(5,594		)
Changes in liability for pre-existing warranties during the period, including expirations	2,622
Balance as of March 31, 2014	$	27,540