Quarterly report pursuant to Section 13 or 15(d)

Stock-based Compensation - Compensation Cost (Details)

v3.20.2
Stock-based Compensation - Compensation Cost (Details) - USD ($)
3 Months Ended 9 Months Ended
Sep. 30, 2020
Sep. 30, 2019
Sep. 30, 2020
Sep. 30, 2019
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]        
Stock-based compensation expense $ 399,000 $ 449,000 $ 1,220,000 $ 1,387,000
Tax benefit from compensation expense $ 0 $ 0 $ 0 $ 0