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Contract Liabilities - Summary of Contract Liabilities (Detail) - USD ($)
Dec. 31, 2019
Dec. 31, 2018
Contract Liabilities:    
Deferred revenue $ 0 $ 1,875,000
Total Contract Liabilities 0 1,875,000
Asset Management [Member]    
Contract Liabilities:    
Deferred revenue $ 0 $ 1,875,000