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Leases - Schedule of Maturity of Lease Liabilities (Detail) - USD ($)
$ in Thousands
Mar. 31, 2019
Jan. 01, 2019
Operating Lease Liabilities Payments Due [Abstract]    
Remainder of 2019 $ 2,363  
2020 2,185  
2021 2,032  
2022 1,544  
2023 1,163  
Thereafter 747  
Total lease payments 10,034  
Less: Interest (515)  
Operating lease, right-of-use liability $ 9,519 $ 10,322