Transactions between the Company and Related Parties - Summary of Sales to and Purchase from Related Parties (Detail) - USD ($) $ in Thousands |
12 Months Ended | ||
|---|---|---|---|
Dec. 31, 2016 |
Dec. 31, 2015 |
Dec. 31, 2014 |
|
| Related Party Transaction [Line Items] | |||
| Sales to related parties | $ 15 | $ 8 | $ 3 |
| ASV Inc [Member] | Terex Corporation [Member] | |||
| Related Party Transaction [Line Items] | |||
| Sales to related parties | 1,653 | 2,472 | |
| Purchases from related parties | $ 10,268 | $ 9,495 | |