Quarterly report pursuant to Section 13 or 15(d)

Stockholders' Equity - Summary of Stock Option Plan Activity (Detail)

v3.20.2
Stockholders' Equity - Summary of Stock Option Plan Activity (Detail) - $ / shares
6 Months Ended
Jun. 30, 2020
Jun. 30, 2019
Number of Options    
Number of Options, Outstanding at Beginning of the year 19,300 19,300
Number of Options, Granted
Number of Options, Exercised
Number of Options, Adjustment
Number of Options, Forfeited
Number of Options, Outstanding at End of Year 19,300 19,300
Number of Options, Exercisable at End of Year 11,800 7,634
Weighted Average Exercise Price    
Weighted Average Exercise Price, Outstanding at Beginning Balance $ 60.51 $ 60.51
Weighted Average Exercise Price, Granted
Weighted Average Exercise Price, Exercised
Weighted Average Exercise Price, Adjustment
Weighted Average Exercise Price, Forfeited
Weighted Average Exercise Price, Outstanding at Ending Balance 60.51 60.51
Weighted Average Exercise Price, Exercisable $ 84.49 $ 113.81