Quarterly report pursuant to Section 13 or 15(d)

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

v3.21.2
Basis of Presentation and Significant Accounting Policies - Additional Information (Detail)
3 Months Ended
Aug. 24, 2020
$ / shares
Aug. 20, 2020
$ / shares
Jun. 30, 2021
$ / shares
Jun. 30, 2020
$ / shares
Dec. 31, 2020
$ / shares
Summary Of Significant Accounting Policies [Line Items]          
Reverse stock split ratio 0.8741 1.14396      
Common stock, par value $ 0.001 $ 0.001 $ 0.001 $ 5.50 $ 0.001
Customer Concentration Risk | Sales Revenue          
Summary Of Significant Accounting Policies [Line Items]          
Concentration risk, percentage     90.00% 90.00%