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Warranties (Details 1) - USD ($)
$ in Thousands
6 Months Ended 12 Months Ended
Jun. 30, 2015
Dec. 31, 2014
Product Warranty Disclosure [Abstract]    
Warranty, Beginning Balance $ 252 $ 305
Warranty payments (25) (102)
Warranty additions (73) 49
Warranty Other 3 0
Warranty, Ending Balance $ 157 $ 252