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Equity (Details) - USD ($) | 3 Months Ended |
--- | --- | ---
Mar. 31, 2021 | Mar. 31, 2020 | Dec. 31, 2020
Class of Stock [Line Items] |  |  |
Common Stock, Shares Authorized | 500,000,000 | 500,000,000 | 500,000,000
Common Stock, Shares, Issued | 201,733,458 | 201,061,198 | 201,061,198
Proceeds from issuance of common stock | $ 19,699,000 | $ 3,410,000 |
At-the-market offering |  |  |
Class of Stock [Line Items] |  |  |
Common Stock, Shares Authorized | 6,400,000 |  |
Common Stock, Shares, Issued | 672,260 | 0 |
Proceeds from issuance of common stock | $ 19,700,000 |  |
Issuance costs from Issuance of Common Stock through the ATM Program | $ 300,000 |  |
Common Stock, Capital Shares Reserved for Future Issuance | 5,700,000 |  |

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- Definition Aggregate number of common shares reserved for future issuance. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.29) -URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 + Details
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