Income Taxes - Summary of State NOL Carryforwards Expiration Year (Detail) - State $ in Thousands |
Dec. 31, 2016
USD ($)
|
|---|---|
| Operating Loss Carryforwards [Line Items] | |
| Net operating loss carryforwards | $ 83,027 |
| 2017 | |
| Operating Loss Carryforwards [Line Items] | |
| Net operating loss carryforwards | 6,930 |
| 2018 | |
| Operating Loss Carryforwards [Line Items] | |
| Net operating loss carryforwards | 1,132 |
| 2019 | |
| Operating Loss Carryforwards [Line Items] | |
| Net operating loss carryforwards | 7,646 |
| 2020 | |
| Operating Loss Carryforwards [Line Items] | |
| Net operating loss carryforwards | 2,121 |
| 2021 | |
| Operating Loss Carryforwards [Line Items] | |
| Net operating loss carryforwards | 4,050 |
| Thereafter | |
| Operating Loss Carryforwards [Line Items] | |
| Net operating loss carryforwards | $ 61,148 |