Annual report pursuant to Section 13 and 15(d)

Inventories (Details)

v3.8.0.1
Inventories (Details) - USD ($)
$ in Thousands
Dec. 31, 2017
Dec. 31, 2016
Inventories    
Finished goods $ 35,547 $ 39,822
Work-in-process 7,774 4,225
Raw material and supplies 28,203 26,824
Inventories 71,524 70,871
Inventories - truck chassis floor plan $ 7,711 $ 3,939