Debt (Schedule of Initial Outstanding Amounts Under New Credit Facility) (Parenthetical) (Detail) - USD ($) $ in Thousands |
Mar. 31, 2017 |
Mar. 21, 2017 |
|---|---|---|
| New Term Loan | ||
| Debt Instrument [Line Items] | ||
| Unamortized discount | $ 745 | $ 750 |
| New Credit Facility | ||
| Debt Instrument [Line Items] | ||
| Percentage of upfront fee | 0.50% |