Debt - Summary of Debt Holdings (Detail) - USD ($) $ in Thousands |
Sep. 30, 2016 |
Dec. 31, 2015 |
|---|---|---|
| Debt Instrument [Line Items] | ||
| Total debt | $ 720,639 | $ 311,889 |
| Original issue discount | (4,972) | (3,633) |
| Debt issuance costs - term loan | (13,655) | (9,466) |
| Current portion, long-term debt | 5,685 | 3,250 |
| Long term debt | 714,954 | 308,639 |
| Revolving Credit Facility | ||
| Debt Instrument [Line Items] | ||
| Total debt | 167,000 | 0 |
| Term Loan Facility | ||
| Debt Instrument [Line Items] | ||
| Total debt | 567,079 | 320,125 |
| Debt issuance costs - term loan | (8,468) | (4,603) |
| Current portion, long-term debt | $ 5,685 | $ 3,250 |