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Operating Lease - Summary of Total Lease and Operating Expenses (Detail) - USD ($)
3 Months Ended 6 Months Ended
Jun. 30, 2020
Jun. 30, 2019
Jun. 30, 2020
Jun. 30, 2019
Leases [Abstract]        
Lease and operating expenses $ 239,630   $ 465,488  
Lease and operating expenses   $ 239,455   $ 491,528