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Preferred Shares (Details) - Schedule of balance of Series Preferred and redeemable noncontrolling interests - USD ($) $ in Thousands | 9 Months Ended | 12 Months Ended
--- | --- | ---
Sep. 30, 2021 | Sep. 30, 2020 | Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018
Series A1/C1 Preferred [Member] |  |  |  |  |
Redeemable Noncontrolling Interest [Line Items] |  |  |  |  |
Beginning balance | $ 80,581 | $ 76,684 | $ 76,684 | $ 76,864 | $ 66,839
Accretion before the extinguishment |  |  |  | 961 |
Conversion from Series A1 to C2 Preferred |  |  |  | (11,417) |
Fair value change of preferred shares and redeemable noncontrolling interests due to the extinguishment |  |  |  | 7,135 |
Accretion after the extinguishment |  |  |  | 3,141 |
Accretion |  |  | 3,897 |  |
Reclassification from noncontrolling interests |  |  |  |  |
Accretion before the fair value change |  |  |  |  |
Fair value change of redeemable noncontrolling interests due to extinguishment |  |  |  |  |
Accretion after the fair value change |  |  |  |  | 10,025
Ending balance |  |  | 80,581 | 76,684 | 76,864
Series B1/C2 Preferred [Member] |  |  |  |  |
Redeemable Noncontrolling Interest [Line Items] |  |  |  |  |
Beginning balance | 81,966 | 73,100 | 73,100 | 65,881 | 57,490
Accretion before the extinguishment |  |  |  | 804 |
Conversion from Series A1 to C2 Preferred |  |  |  | 11,417 |
Fair value change of preferred shares and redeemable noncontrolling interests due to the extinguishment |  |  |  | (12,146) |
Accretion after the extinguishment |  |  |  | 7,144 |
Accretion |  |  | 8,866 |  |
Reclassification from noncontrolling interests |  |  |  |  |
Accretion before the fair value change |  |  |  |  |
Fair value change of redeemable noncontrolling interests due to extinguishment |  |  |  |  |
Accretion after the fair value change |  |  |  |  | 8,391
Ending balance |  |  | 81,966 | 73,100 | 65,881
Series EEL/D1 Preferred [Member] |  |  |  |  |
Redeemable Noncontrolling Interest [Line Items] |  |  |  |  |
Beginning balance | 146,583 | 127,935 | 127,935 | 153,223 | 140,000
Accretion before the extinguishment |  |  |  | 15,439 |
Conversion from Series A1 to C2 Preferred |  |  |  |  |
Fair value change of preferred shares and redeemable noncontrolling interests due to the extinguishment |  |  |  | (56,127) |
Accretion after the extinguishment |  |  |  | 15,400 |
Accretion |  |  | 18,648 |  |
Reclassification from noncontrolling interests |  |  |  |  |
Accretion before the fair value change |  |  |  |  |
Fair value change of redeemable noncontrolling interests due to extinguishment |  |  |  |  |
Accretion after the fair value change |  |  |  |  | 13,223
Ending balance |  |  | 146,583 | 127,935 | 153,223
Redeemable noncontrolling interests [Member] |  |  |  |  |
Redeemable Noncontrolling Interest [Line Items] |  |  |  |  |
Beginning balance | 90,820 | 80,561 | 80,561 | 79,615 |
Accretion before the extinguishment |  |  |  | 796 |
Conversion from Series A1 to C2 Preferred |  |  |  |  |
Fair value change of preferred shares and redeemable noncontrolling interests due to the extinguishment |  |  |  | (8,299) |
Accretion after the extinguishment |  |  |  | 8,449 |
Accretion | 5,841 | 7,681 | 10,259 |  |
Reclassification from noncontrolling interests |  |  |  |  | 81,438
Accretion before the fair value change |  |  |  |  | 2,505
Fair value change of redeemable noncontrolling interests due to extinguishment |  |  |  |  | (5,828)
Accretion after the fair value change |  |  |  |  | 1,500
Ending balance |  | $ 88,242 | $ 90,820 | $ 80,561 | $ 79,615

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