Restructuring, Impairment and Other Charges - Restructuring Reserve - Additional Information (Details) - USD ($) $ in Millions |
Dec. 31, 2016 |
Dec. 31, 2015 |
|---|---|---|
| Restructuring And Related Activities [Abstract] | ||
| Current restructuring reserve (included in accrued liabilities) | $ 3.7 | $ 3.6 |
| Noncurrent restructuring reserve (included in noncurrent liabilities) | $ 1.7 | $ 2.2 |