Income Taxes - Schedule of Reconciliations of Statutory U.S. Federal Income Tax to Effective Income Tax for Operations (Detail) - USD ($) $ in Thousands |
12 Months Ended | ||
|---|---|---|---|
Dec. 31, 2015 |
Dec. 31, 2014 |
Dec. 31, 2013 |
|
| Income Tax Disclosure [Abstract] | |||
| Statutory U.S. Federal income tax at 35% | $ 28,058 | $ 44,913 | $ (8,951) |
| Partnership (income) losses not subject to tax | (27,076) | (42,843) | 10,854 |
| State and local income taxes, net of federal tax | 1,003 | 3,111 | 173 |
| Foreign income tax (benefit) provision | (169) | 328 | 1,520 |
| Transaction costs | 0 | 0 | (55) |
| Other, including non-recurring items | 0 | 0 | 718 |
| Total income tax provision (benefit) | $ 1,816 | $ 5,509 | $ 4,259 |