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Warranties (Tables)
9 Months Ended
Sep. 30, 2014
Warranties Disclosure [Abstract]  
Warranty Rollforward Disclosure [Table Text Block]
BeginningEnding
BalancePaymentsAdditions Balance
(in thousands)
Year ended December 31, 2013$ 222 (179) 262 $ 305
Nine Months Ended September 30, 2014$ 305 (56) 28 $ 277