Quarterly report pursuant to Section 13 or 15(d)

Leases - Supplemental Cash Flow Information (Detail)

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Leases - Supplemental Cash Flow Information (Detail) - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2019
Mar. 31, 2018
Cash paid for amounts included in the measurement of lease liabilities:    
Operating cash flows from operating leases $ 322  
Operating cash flows from finance leases 1  
Financing cash flows from finance leases 8 $ 0
Right-of-use asset obtained in exchange for lease obligations:    
Operating leases 7,234  
Finance leases $ 0