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Segment and Geographic Information - Summary of Finance and Operating Lease Right of Use Assets by Geographical Location (Detail) - USD ($)
$ in Thousands
Dec. 31, 2020
Dec. 31, 2019
Total finance lease right-of-use assets $ 29,606 $ 39,602
Total operating lease right-of-use assets 2,043 1,931
United States [Member]    
Total finance lease right-of-use assets 29,551 39,237
Total operating lease right-of-use assets 47 75
China [Member]    
Total finance lease right-of-use assets 55 365
Total operating lease right-of-use assets $ 1,996 $ 1,856