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Leases - Schedule of Lease Assets and Related Lease Liabilities (Detail) - USD ($)
$ in Thousands
Dec. 31, 2019
Dec. 31, 2018
Leases [Abstract]    
Right-of-use assets - cost $ 49,909  
Accumulated amortization (10,307)  
Finance lease right-of-use assets, net 39,602 $ 0
Right-of-use assets - cost 2,736  
Accumulated amortization (805)  
Operating lease right-of-use assets, net 1,931 0
Total lease assets 41,533  
Finance lease liabilities 12,351 0
Operating lease liabilities 983  
Finance lease liabilities 37,610 0
Operating lease liabilities 942 $ 0
Total lease liabilities $ 51,886