General form of registration statement for all companies including face-amount certificate companies

Basis of Presentation and Significant Accounting Policies - Additional Information (Detail)

v3.21.1
Basis of Presentation and Significant Accounting Policies - Additional Information (Detail)
3 Months Ended 12 Months Ended
Aug. 24, 2020
$ / shares
Aug. 20, 2020
$ / shares
Mar. 31, 2021
$ / shares
Mar. 31, 2020
Dec. 31, 2020
$ / shares
Dec. 31, 2019
$ / shares
Dec. 28, 2020
$ / shares
Jun. 30, 2020
$ / shares
Summary Of Significant Accounting Policies [Line Items]                
Reverse stock split ratio 0.8741000000 1.14396            
Common stock, par value $ 0.001 $ 0.001 $ 0.001   $ 0.001 $ 0.001 $ 10.00 $ 5.50
Customer Concentration Risk | Sales Revenue                
Summary Of Significant Accounting Policies [Line Items]                
Concentration risk, percentage     90.00% 90.00% 90.00% 90.00%    
Minimum                
Summary Of Significant Accounting Policies [Line Items]                
Share based compensation, vesting period         1 year      
Maximum                
Summary Of Significant Accounting Policies [Line Items]                
Share based compensation, vesting period         2 years