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Summary of Significant Accounting Policies - Additional Information (Detail) - shares
3 Months Ended 6 Months Ended
Jun. 30, 2020
Jun. 30, 2019
Jun. 30, 2020
Jun. 30, 2019
Property, Plant and Equipment [Line Items]        
Weighted average number of common shares outstanding 9,542,449 9,224,318 9,530,056 9,223,264
Minimum [Member]        
Property, Plant and Equipment [Line Items]        
Property and Equipment, estimated useful life     3 years  
Maximum [Member]        
Property, Plant and Equipment [Line Items]        
Property and Equipment, estimated useful life     30 years