Quarterly report pursuant to Section 13 or 15(d)

Stock-based Compensation - Compensation Cost (Details)

v3.21.2
Stock-based Compensation - Compensation Cost (Details) - USD ($)
3 Months Ended 6 Months Ended
Jun. 30, 2021
Jun. 30, 2020
Jun. 30, 2021
Jun. 30, 2020
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]        
Stock-based compensation expense $ 542,000 $ 411,000 $ 940,000 $ 821,000
Tax benefit from compensation expense $ 0 $ 0 $ 0 $ 0