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Shareholders’ Equity - Open Market Sales Agreement (Details) $ in Millions | 1 Months Ended | 3 Months Ended |
--- | --- | --- | ---
Jan. 31, 2021 shares | Mar. 31, 2021 USD ($) shares | Sep. 18, 2020 USD ($)
Class of Stock |  |  |
Sale of stock, authorized amount | $ |  |  | $ 100.0
Commission, percentage of gross sales price |  |  | 0.030
Number of shares issued in transaction (in shares) | shares | 1,718,506 |  |
Stock issuance costs | $ |  | $ 15.3 |
Underwriters public offering |  |  |
Class of Stock |  |  |
Number of shares issued in transaction (in shares) | shares |  | 1,700,000 |

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- Definition The cash outflow for cost incurred directly with the issuance of an equity security. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 15 -URI http://asc.fasb.org/extlink&oid=121586364&loc=d3e3291-108585 + Details
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