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Adoption of ASC 842 - Maturities of Operating Lease Liabilities (Detail) - USD ($)
$ in Thousands
Jun. 30, 2019
Jan. 01, 2019
Leases [Abstract]    
For the remainder of 2019 $ 3,652  
2020 4,150  
2021 2,819  
2022 2,164  
2023 1,865  
Thereafter 2,606  
Total lease payments 17,256  
Less imputed interest (3,239)  
Lease obligations $ 14,017 $ 15,900