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Equity - ATM Equity Distribution Agreement (Details) - shares |  | 3 Months Ended | 9 Months Ended |
--- | --- | --- | --- | ---
May 27, 2021 | Sep. 30, 2021 | Sep. 30, 2021 | Dec. 31, 2020
Subsidiary, Sale of Stock [Line Items] |  |  |  |
Common stock, shares authorized (in shares) |  | 400,000,000 | 400,000,000 | 400,000,000
At-the-Market Equity Distribution Agreement [Member] |  |  |  |
Subsidiary, Sale of Stock [Line Items] |  |  |  |
Shares issued |  | 0 | 0 |
Maximum commission percent of gross sales | 2.00% |  |  |
At-the-Market Equity Distribution Agreement [Member] | Maximum [Member] |  |  |  |
Subsidiary, Sale of Stock [Line Items] |  |  |  |
Common stock, shares authorized (in shares) | 4,000,000.0 |  |  |

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