Debt - Schedule of Debt (Details) - USD ($) $ in Thousands |
Mar. 31, 2018 |
Dec. 31, 2017 |
Mar. 31, 2017 |
|---|---|---|---|
| Debt Instrument [Line Items] | |||
| Short-term borrowings | $ 12,263 | $ 9,404 | |
| Australian credit facility | 8,523 | 371 | |
| Short-term borrowings and current portion of long-term debt | 20,786 | $ 10,835 | 9,775 |
| Long-term portion: | |||
| Less: financing costs, net | 1,438 | 976 | |
| Long-term debt, net | 547,324 | 480,442 | |
| Total debt | 568,110 | 490,217 | |
| Revolving Credit Facility | |||
| Long-term portion: | |||
| Long-term debt, gross | 388,762 | 361,418 | |
| Receivables Securitization Facility | |||
| Long-term portion: | |||
| Long-term debt, gross | $ 160,000 | $ 120,000 |