v3.20.1
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