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Leases - Future lease payments required for leases that have initial or remaining non-cancelable lease terms (Detail)
$ in Thousands
Sep. 30, 2019
USD ($)
2019 (excluding the nine months ended September 30, 2019) $ 1,973
2020 6,941
2021 5,178
2022 4,005
2023 2,336
Thereafter 3,100
Total future lease payments 23,533
Less: Imputed interest (2,975)
Present value of lease liabilities $ 20,558