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Leases - Summary of Supplemental Cash Flow Information Related to Leases (Detail) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2019
Sep. 30, 2019
Cash paid for amounts included in the measurement of lease liabilities:    
Operating cash flows from operating leases $ 232 $ 690
Operating cash flows from financing leases 10 23
Financing cash flows from financing leases $ 129 253
Non-cash activity    
Right-of-use assets obtained in exchange for operating lease obligations   240
Right-of-use assets obtained in exchange for finance lease obligations   $ 1,249