XML 109 R71.htm IDEA: XBRL DOCUMENT v3.22.0.1
At-The-Market (ATM) Offering - Additional Information (Details) - At The Market Offering [Member] - USD ($)
$ in Millions
Mar. 12, 2021
Dec. 01, 2020
Class Of Stock [Line Items]    
Agreement terminated   2021-02
Sales Agreement [Member] | Maximum [Member]    
Class Of Stock [Line Items]    
Maximum aggregate value of common stock available for offering at-the-market price $ 75.0 $ 50.0