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Leases - Summary of Supplemental Cash Flow Information Related to Leases (Detail)
$ in Thousands
6 Months Ended
Jun. 30, 2019
USD ($)
Cash paid for amounts included in the measurement of lease liabilities  
Operating cash flows from operating leases $ 2,055
Operating cash flows from finance leases 454
Financing cash flows from finance leases 188
Right-of-use assets obtained in exchange for lease obligations  
Operating leases 362
Finance leases $ 21,179