Quarterly report pursuant to Section 13 or 15(d)

Stock-Based Compensation and Other Benefit Plans - Additional Information (Details)

v3.20.2
Stock-Based Compensation and Other Benefit Plans - Additional Information (Details) - USD ($)
$ / shares in Units, $ in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2020
Sep. 30, 2019
Sep. 30, 2020
Bank4Texas Warrants      
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]      
Warrant exercise price $ 10.50   $ 10.50
Warrants shares, issue     12,491
Warrants exercisable expire date     Aug. 31, 2020
Oasis Warrants      
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]      
Warrant exercise price $ 12.84   $ 12.84
Warrants shares, issue     19,140
Warrants exercisable expire date     Nov. 30, 2022
Stock option activity 0   0
2008 Stock Plan      
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]      
Total unrecognized compensation cost $ 91   $ 91
Compensation cost recognized weighted average remaining period     9 months 29 days
2017 Stock Plan      
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]      
Total unrecognized compensation cost 357   $ 357
Compensation cost recognized weighted average remaining period     2 years 3 months 18 days
2017 Stock Plan | Restricted Stock Unit Awards      
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]      
Total unrecognized compensation cost $ 2,443 $ 1,138 $ 2,443
Compensation cost recognized weighted average remaining period 4 years 5 months 26 days 4 years 5 months 8 days  
Restricted stock units granted     138,575
Fair value of restricted stock     $ 1,500