Warrany Costs (Tables)

6 Months Ended

Jun. 30, 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	6,964
Settlements made during the period	(11,171		)
Changes in liability for pre-existing warranties during the period, including expirations	2,898
Balance as of June 30, 2014	$	26,084