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Warranties (Tables)
6 Months Ended
Jun. 30, 2015
Warranties Disclosure [Abstract]  
Warranty Rollforward Disclosure [Table Text Block]
BeginningAdditions/Ending
BalancePayments(Credits)OtherBalance
(in thousands)
Year ended December 31, 2014$305(102)49-$252
Six months ended June 30, 2015$252(25)(73)3$157