• Filing Date: 2019-03-08
  • Form Type: 10-K
  • Description: Annual report
v3.10.0.1
Stock-Based Compensation - Summary of Company's Stock Option Plan Activity (Detail) - USD ($)
$ / shares in Units, $ in Thousands
12 Months Ended
Dec. 31, 2018
Dec. 31, 2017
Dec. 31, 2016
Dec. 31, 2015
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward]        
Granted, Number of options 110,000 110,000    
Exercised, Number of Options 0 (30,000) (60,000)  
Outstanding, Number of Options 240,000 130,000 50,000 110,000
Exercisable, Number of Options 47,500      
Granted, Weighted Average Exercise Price $ 40.00 $ 40.00    
Exercised, Weighted Average Exercise Price   2.50 $ 2.50  
Outstanding, Weighted Average Exercise Price 37.19 $ 34.82 $ 4.02 $ 3.19
Exercisable, Weighted-Average Exercise Price $ 25.81      
Outstanding, Weighted-Average Remaining Contractual Term 8 years 9 months 18 days 8 years 2 months 12 days 2 years 3 months 18 days 2 years 3 months 18 days
Exercisable, Weighted-Average Remaining Contractual Term 5 years 9 months 18 days      
Outstanding, Aggregate Intrinsic Value $ 3,278 $ 472 $ 1,773 $ 3,482
Exercisable, Aggregate Intrinsic Value $ 1,189