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Leases - Schedule Includes Other Information About Leases (Detail) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2020
Sep. 30, 2019
Sep. 30, 2020
Sep. 30, 2019
Leases [Abstract]        
Operating cash flows from operating leases $ 308 $ 256 $ 935 $ 778
Operating cash flows from finance leases 1 2 3 6
Finance cash flows from finance leases $ 12 $ 21 $ 51 $ 69
Weighted average remaining lease term:        
Operating leases 4 years 4 months 24 days   4 years 4 months 24 days  
Finance leases 1 year 3 months 18 days   1 year 3 months 18 days  
Weighted average discount rate:        
Operating leases 5.77%   5.77%  
Finance leases 6.25%   6.25%