Income Taxes - Schedule of Activity Related to Unrecognized Tax Benefits (Detail) - USD ($) $ in Thousands |
12 Months Ended | |
|---|---|---|
Dec. 31, 2016 |
Dec. 31, 2015 |
|
| Income Tax Disclosure [Abstract] | ||
| Gross unrecognized tax benefits at January 1, | $ 1,100 | $ 1,100 |
| Gross increases (decreases) related to prior year tax positions | 0 | 0 |
| Gross increases (decreases) related to current year tax positions | 0 | 0 |
| Settlements | 0 | 0 |
| Expiration of the statute of limitations for the assessment of taxes | 0 | 0 |
| Gross unrecognized tax benefits at December 31, | $ 1,100 | $ 1,100 |
| X | ||||||||||
- Definition Unrecognized tax benefits increases decrease resulting from prior period tax positions. No definition available.
|
| X | ||||||||||
- Definition Unrecognized tax benefits increases decreases resulting from current period tax positions. No definition available.
|
| X | ||||||||||
- References No definition available.
|
| X | ||||||||||
- Definition Amount of unrecognized tax benefits. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
- Definition Amount of increase in unrecognized tax benefits resulting from settlements with taxing authorities. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
- Definition Amount of decrease in unrecognized tax benefits resulting from lapses of applicable statutes of limitations. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|