XML 48 R37.htm IDEA: XBRL DOCUMENT v3.21.1
Property and Equipment, Net - Additional Information (Details) - USD ($)
$ in Millions
3 Months Ended
Mar. 31, 2021
Mar. 31, 2020
Property Plant And Equipment [Line Items]    
Depreciation $ 0.4 $ 0.5
Automobiles [Member] | General and Administrative Expense [Member]    
Property Plant And Equipment [Line Items]    
Gain on Sale of Property and Equipment $ 0.5