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Stockholders Equity (Common Stock and Equity Offerings) (Narrative) (Details) - USD ($) |  |  | 3 Months Ended |  |  |  |
--- | --- | --- | --- | --- | --- | --- | ---
Jan. 01, 2022 | Jul. 22, 2016 | Mar. 31, 2022 | Mar. 31, 2021 | Dec. 31, 2021 | May 24, 2021 | Dec. 04, 2020 | Aug. 31, 2018
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |
Common stock, shares authorized |  |  | 150,000,000 |  | 125,000,000 |  |  |
Common stock par value (in dollars per share) |  |  | $ 0.0001 |  | $ 0.0001 |  |  |
Preferred stock, shares authorized |  |  | 2,000,000 |  | 2,000,000 |  |  |
Preferred stock, shares issued |  |  | 250,000 |  | 250,000 |  |  |
Aggregate value of shares subscribed |  |  | $ 27,000 |  | $ 4,329,000 |  |  |
Common stock, shares issued |  |  | 100,287,838 |  | 93,582,991 |  |  |
Common stock, shares issuable |  |  | 27,393 |  | 2,536,607 |  |  |
Shares available for future sale |  |  | 587,542 |  |  |  |  |
Fortress Biotech, Inc [Member] |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |
Issuance of common shares - Founders Agreement (in shares) | 2,536,607 |  | 1,049,302 |  |  |  |  |
Percentage of fully diluted equity | 2.50% | 2.50% | 2.50% |  |  |  |  |
Expenses from related party transaction |  |  | $ 300,000 | $ 100,000 |  |  |  |
Issuance of common shares (in shares) |  |  | 94,375 | 325,221 |  |  |  |
Shares issued, price per share |  |  | $ 1.73 | $ 4.16 |  |  |  |
Common stock, shares issuable |  |  | 27,393 |  |  |  |  |
Proceeds from issuance of common shares |  |  | $ 2,800,000 |  |  |  |  |
At the Market Offering [Member] |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |
Agent commission (as a percent) |  |  |  |  |  |  |  | 3.00%
Issuance of common shares (in shares) |  |  | 2,800,000 | 11,600,000 |  |  |  |
Shares issued, price per share |  |  | $ 1.00 | $ 4.17 |  |  |  |
Proceeds from issuance of common shares |  |  | $ 2,800,000 | $ 48,400,000 |  |  |  |
Aggregate fees of stock issuance |  |  | 49,000 | 900,000 |  |  |  |
Registration Statements [Member] |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |
Sale of Stock aggregate offering price - Founders Agreement |  |  |  |  |  | $ 200,000,000.0 | $ 100,000,000.0 |
Shares available for future issuance - Founders Agreement |  |  | $ 11,700,000 |  |  |  |  |
Class A Common Shares [Member] |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |
Common stock, shares issued |  |  | 845,385 |  | 845,385 |  |  |
General and administrative [Member] | Fortress Biotech, Inc [Member] |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |
Expenses from related party transaction |  |  | $ 800,000 | $ 1,200,000 |  |  |  |

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