Accrued Warranty (Details) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015
Accrued Warranty
Balance at beginning of period	$ 228	$ 373
Accrued warranty expense	142	219
Warranty claims paid	(90)	(225)
Translation adjustment	(36)	(25)
Balance at end of period	$ 244	$ 342
Minimum
Warrants period	1 year
Maximum
Warrants period	5 years