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Leases - Components of Lease Cost for Operating and Finance Leases (Detail)
$ in Thousands
12 Months Ended
Dec. 31, 2019
USD ($)
Operating leases  
Operating lease cost $ 3,344
Short-term lease cost 330
Variable lease cost 1,092
Operating and variable lease cost 4,766
Finance leases  
Depreciation on finance leases 188
Interest on finance leases 21
Finance lease cost 209
Total lease cost $ 4,975