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Net Loss per Share - Additional Information (Details) - USD ($) | 3 Months Ended | 6 Months Ended |
--- | --- | --- | ---
Jun. 30, 2021 | Mar. 31, 2021 | Jun. 30, 2020 | Mar. 31, 2020 | Jun. 30, 2021 | Jun. 30, 2020 | Dec. 31, 2017
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] |  |  |  |  |  |  |
Net Loss Attributable to Non-controlling Interest | $ 0 | $ (1,000) | $ (16,000) | $ (26,000) | $ (1,000) | $ (42,000) |
Series A Preferred Stock [Member] |  |  |  |  |  |  |
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] |  |  |  |  |  |  |
Accretion of Preferred Stock Deemed Dividend |  |  |  |  | 7,400,000 |  |
Preferred Stock Redemption Discount |  |  |  |  |  |  | $ 6,900,000
Accretion of preferred discount |  |  |  |  | 100,000 |  |
Preferred stock accrued dividends | 0 |  | 63,000 |  | 24,000 | 125,000 |
Series B Preferred Stock [Member] |  |  |  |  |  |  |
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] |  |  |  |  |  |  |
Accretion of Preferred Stock Deemed Dividend |  |  | 392,000 | 795,000 | 1,500,000 |  |
Net Loss Attributable to Non-controlling Interest |  | $ 0 | 100,000 | 0 | 100,000 | 100,000 |
Accretion of preferred discount |  |  | 400,000 | $ 400,000 | 1,500,000 | 800,000 |
Preferred stock accrued dividends | $ 0 |  | $ 392,000 |  | $ 1,497,000 | $ 796,000 |
Convertible to common stock that were excluded from the computations of net loss per common share | 0 |  | 4,804,348 |  | 0 | 4,804,348 |
Equity Option [Member] |  |  |  |  |  |  |
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] |  |  |  |  |  |  |
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount |  |  |  | 2,472,362 | 3,997,418 |  |
Warrant [Member] |  |  |  |  |  |  |
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] |  |  |  |  |  |  |
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount | 3,997,418 |  | 2,472,362 |  | 6,344,966 | 18,714,999 |

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