SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details) - USD ($) |
2 Months Ended | 9 Months Ended | 12 Months Ended | |||
|---|---|---|---|---|---|---|
Dec. 31, 2019 |
Sep. 30, 2020 |
Dec. 31, 2020 |
Dec. 31, 2019 |
Dec. 31, 2018 |
Dec. 31, 2017 |
|
| Unrecognized tax benefits | $ 5,033,000 | $ 6,139,000 | $ 5,033,000 | $ 2,433,000 | $ 862,000 | |
| Tax provision | $ 63,000 | $ 252,000 | $ 377,000 | |||
| Warrants to purchase ordinary shares excluded from computation of diluted loss per share | 92,821,000 | 381,643,000 | 333,038,000 | |||
| Social Capital Member | ||||||
| Unrecognized tax benefits | 0 | $ 0 | $ 0 | |||
| Unrecognized tax benefits, interest and penalties accrued | 0 | 0 | $ 0 | |||
| Tax provision | $ 0 | $ 0 | ||||
| Warrants to purchase ordinary shares excluded from computation of diluted loss per share | 19,933,333 | |||||