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Leases - Schedule of Maturities of Lease Liabilities (Detail) - USD ($)
$ in Thousands
Sep. 30, 2019
Jan. 01, 2019
Operating leases    
2019 $ 730  
2020 3,041  
2021 2,633  
2022 1,984  
2023 1,857  
Thereafter 6,506  
Total minimum lease payments 16,751  
Less imputed interest (2,817)  
Lease liability 13,934 $ 13,300
Finance leases    
2019 207  
2020 855  
2021 872  
2022 889  
2023 907  
Thereafter 6,409  
Total minimum lease payments 10,139  
Less imputed interest (2,160)  
Lease liability $ 7,979