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Equity Investments (Details) - USD ($) $ in Thousands |  | 3 Months Ended | 6 Months Ended |  |
--- | --- | --- | --- | --- | ---
Jun. 17, 2017 | Jun. 30, 2022 | Jun. 30, 2021 | Jun. 30, 2022 | Jun. 30, 2021 | Dec. 31, 2021 | Jun. 17, 2021
Equity Investment |  |  |  |  |  |  |
Payments for equity investments |  |  |  | $ 238 | $ 4,998 |  |
Common stock |  | $ 391 |  | 391 |  | $ 364 |
Income (loss) in equity investments |  | $ (67) |  | $ 169 | 0 |  |
Anglo Ardmore Ship Management Limited |  |  |  |  |  |  |
Equity Investment |  |  |  |  |  |  |
Percentage of ownership interest (as a percent) |  | 50.00% |  | 50.00% |  |  |
Element 1 Corp And Maritime Partners LLC |  |  |  |  |  |  |
Equity Investment |  |  |  |  |  |  |
Equity Investment |  |  |  |  |  |  | $ 10,900
Element 1 Corp. |  |  |  |  |  |  |
Equity Investment |  |  |  |  |  |  |
Percentage of ownership interest (as a percent) | 10.00% | 10.00% |  | 10.00% |  |  |
Payments for equity investments | $ 4,000 |  | $ 5,000 |  |  |  |
Common stock | $ 5,300 |  | $ 5,300 |  | $ 5,300 |  |
Number of common shares | 581,795 |  |  |  |  |  |
Warrants to purchase common shares | 286,582 |  |  |  |  |  |
Total investment | $ 9,300 | $ 9,300 |  | $ 9,300 |  |  |
Percentage of voting right | 20.00% |  |  |  |  |  |
Equity Investment |  | $ 9,800 |  | $ 9,800 |  |  |
e1 Marine LLC |  |  |  |  |  |  |
Equity Investment |  |  |  |  |  |  |
Percentage of ownership interest (as a percent) | 33.33% | 33.33% |  | 33.33% |  |  |
Equity Investment |  | $ 1,100 |  | $ 1,100 |  |  |

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- Definition Number of securities into which the class of warrant or right may be converted. For example, but not limited to, 500,000 warrants may be converted into 1,000,000 shares. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=123467817&loc=d3e21475-112644 + Details
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