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Leases - Schedule Includes Other Information About Leases (Detail) - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2021
Mar. 31, 2020
Leases [Abstract]    
Operating cash flows from operating leases $ 128 $ 271
Operating cash flows from finance leases   1
Finance cash flows from finance leases $ 155 $ 21
Weighted average remaining lease term:    
Operating leases 4 years 1 month 6 days  
Finance leases 1 year 1 month 6 days  
Weighted average discount rate:    
Operating leases 5.73%  
Finance leases 6.25%