Commitments and Contingencies - Additional Information (Detail) - USD ($) |
1 Months Ended | 11 Months Ended | 12 Months Ended | |
|---|---|---|---|---|
Feb. 09, 2016 |
Dec. 31, 2016 |
Dec. 31, 2015 |
Dec. 31, 2014 |
|
| Commitments And Contingencies Disclosure [Abstract] | ||||
| Future minimum annual rentals under operating leases in 2017 | $ 2,600,000 | |||
| Future minimum annual rentals under operating leases in 2018 | 1,600,000 | |||
| Future minimum annual rentals under operating leases in 2019 | 1,400,000 | |||
| Future minimum annual rentals under operating leases in 2020 | 1,200,000 | |||
| Future minimum annual rentals under operating leases in 2021 | 1,200,000 | |||
| Future minimum annual rentals under operating leases in 2022 and thereafter | 2,100,000 | |||
| Lease rental expenses | $ 678,000 | 4,100,000 | $ 14,600,000 | $ 15,200,000 |
| Purchase commitments | $ 5,400,000 | |||