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Common Stock - Activity of Equity Shelf Program (Details) - USD ($)
3 Months Ended 12 Months Ended
Mar. 31, 2022
Mar. 31, 2021
Mar. 31, 2022
Mar. 31, 2022
Mar. 31, 2021
Class of Stock [Line Items]          
Net proceeds $ 453,495,000 $ 48,990,000 $ 618,146,000   $ 185,087,000
Equity Shelf Program          
Class of Stock [Line Items]          
Gross proceeds       $ 158,180,343  
Less: agent commissions       (1,581,803)  
Net proceeds       $ 156,598,540  
Number of shares sold (in shares)       2,302,407  
Weighted average price per share (in USD per share)       $ 68.70