Annual report pursuant to Section 13 and 15(d)

Stock-based Compensation - Summary of Status of Company's Stock Option Activity (Detail 1)

v3.19.1
Stock-based Compensation - Summary of Status of Company's Stock Option Activity (Detail 1) - USD ($)
$ / shares in Units, $ in Thousands
12 Months Ended
Dec. 31, 2018
Dec. 31, 2017
Shares    
Outstanding at December 31, 2017 (in shares) 2,315,035 1,857,012
2017 Grants 0 1,260,000
Exercised (in shares) 0 0
Cancelled, expired or forfeited (in shares) (314,027) (801,977)
Outstanding at December 31, 2018 (in shares) 2,001,008 2,315,035
Exercisable (in shares) 1,074,508 890,384
Weighted Average Exercise Price    
Outstanding at December 31, 2017 (in dollars per share) $ 3.41 $ 4.28
Granted (in dollars per share) 0 1.96
Exercised (in dollars per share) 0 0
Cancelled, expired or forfeited (in dollars per share) 4.21 3.14
Outstanding at December 31, 2018 (in dollars per share) 3.29 3.41
Exercisable (in dollars per share) $ 4.16 $ 4.84
Weighted Average Remaining Contractual Life (Years)    
Weighted Average Remaining Contractual Life at December 31, 2018 6 years 7 months 6 days 7 years 3 months
Exercisable Weighted Average Remaining Contractual Life at December 31, 2018 5 years 7 months 24 days 4 years 8 months 1 day
Intrinsic Value    
Intrinsic Value Outstanding at December 31, 2017 $ 1,225 $ 498
Intrinsic Value Exercisable at December 31, 2017 $ 318 $ 0