Annual report pursuant to Section 13 and 15(d)

Commitments and Contingencies - Future Minimum Annual Rental Commitments under Non-Cancelable Operating Leases (Detail)

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Commitments and Contingencies - Future Minimum Annual Rental Commitments under Non-Cancelable Operating Leases (Detail)
$ in Thousands
Dec. 31, 2018
USD ($)
Commitments and Contingencies Disclosure [Abstract]  
2019 $ 6,955
2020 5,650
2021 3,339
2022 2,631
2023 2,044
Thereafter 7,259
Total $ 27,878