Income Taxes - Schedule of Components of Income (Loss) Before Income Taxes (Detail) - USD ($) $ in Thousands |
12 Months Ended | ||
---|---|---|---|
Dec. 31, 2018 |
Dec. 31, 2017 |
Dec. 31, 2016 |
|
Components of Income Tax Expense (Benefit), Continuing Operations [Abstract] | |||
Foreign | $ (28,689) | $ (35,680) | $ (26,928) |
U.S. | (149,692) | (93,241) | (82,510) |
Totals | $ (178,381) | $ (128,921) | $ (109,438) |