XML 47 R36.htm IDEA: XBRL DOCUMENT v3.21.1
Stock-Based Compensation and Stock Awards - Additional Information (Details) - USD ($)
$ in Millions
3 Months Ended
Mar. 31, 2021
Mar. 31, 2020
Selling, General and Administrative Expenses    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Allocated share-based compensation expense $ 3.2 $ 3.2