Quarterly report pursuant to Section 13 or 15(d)

Foreign Currency Translation (Details)

v3.8.0.1
Foreign Currency Translation (Details) - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2018
Mar. 31, 2017
Revenue from external customers    
Net sales $ 40,552 $ 38,091
Foreign operations    
Revenue from external customers    
Net sales $ 5,400 $ 4,800