Segment Information - Summary of Goodwill by Segment (Detail) - USD ($) $ in Thousands |
12 Months Ended | |
|---|---|---|
Dec. 31, 2016 |
Dec. 31, 2015 |
|
| Goodwill [Line Items] | ||
| Foreign currency translation | $ (814) | $ (2,577) |
| Beginning Balance | 71,337 | 43,741 |
| Goodwill write-off | (275) | |
| Ending Balance | 70,248 | 71,337 |
| Lifting Equipment [Member] | ||
| Goodwill [Line Items] | ||
| Beginning balance | 40,483 | 12,887 |
| Goodwill related to acquisition | 30,173 | |
| Foreign currency translation | (814) | (2,577) |
| Ending balance | 39,669 | 40,483 |
| Beginning Balance | 40,483 | 12,887 |
| Ending Balance | 39,669 | 40,483 |
| ASV Segment [Member] | ||
| Goodwill [Line Items] | ||
| Beginning Balance | 30,579 | 30,579 |
| Ending Balance | 30,579 | 30,579 |
| Equipment Distribution [Member] | ||
| Goodwill [Line Items] | ||
| Beginning Balance | 275 | 275 |
| Goodwill write-off | (275) | |
| Ending Balance | $ 0 | $ 275 |