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Common Stock - Activity of Equity Shelf Program (Details) - USD ($)
9 Months Ended 12 Months Ended 18 Months Ended
Sep. 30, 2022
Sep. 30, 2021
Sep. 30, 2022
Sep. 30, 2021
Sep. 30, 2022
Class of Stock [Line Items]          
Net proceeds $ 459,051,000 $ 210,812,000 $ 461,880,000 $ 259,422,000  
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