XML 48 R34.htm IDEA: XBRL DOCUMENT v3.8.0.1
Cost of Manufactured Inventory Includes Raw Material, Labor and Overhead (Detail) - USD ($)
$ in Thousands
Dec. 31, 2017
Dec. 31, 2016
Inventory [Line Items]    
Raw materials and components $ 83,834 $ 53,388
Finished goods 54,000 57,297
Work in progress 29,123 18,422
Used trailers 7,330 2,490
Aftermarket parts 6,448 8,356
Total, Inventories $ 180,735 $ 139,953