Stockholders' Deficit - Summary of Stock Option Activity (Detail) - USD ($) |
12 Months Ended | |
|---|---|---|
Dec. 31, 2019 |
Dec. 31, 2018 |
|
| Disclosure Of Compensation Related Costs Sharebased Payments [Abstract] | ||
| Shares, Outstanding, Beginning balance | 4,000 | |
| Shares, Granted | 0 | 0 |
| Shares, Expired | (2,000) | |
| Shares, Outstanding, Ending balance | 2,000 | 4,000 |
| Shares, Vested and expected to vest | 2,000 | |
| Shares, Exercisable | 2,000 | |
| Wtd. Avg. Exercise Price, Outstanding, Beginning balance | $ 31.89 | |
| Wtd. Avg. Exercise Price, Expired | 29.75 | |
| Wtd. Avg. Exercise Price, Outstanding, Ending balance | 34.54 | $ 31.89 |
| Wtd. Avg. Exercise Price, Vested and expected to vest | 34.54 | |
| Wtd. Avg. Exercise Price, Exercisable | $ 34.54 | |
| Wtd. Avg. Remaining Contractual Life, Outstanding | 2 years 4 months 13 days | |
| Wtd. Avg. Remaining Contractual Life, Vested and expected to vest | 2 years 4 months 13 days | |
| Wtd. Avg. Remaining Contractual Life, Exercisable | 2 years 4 months 13 days | |
| Aggregate Intrinsic Value, Outstanding | $ 0 | |