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STOCKHOLDERS' EQUITY - Warrants (Details) - $ / shares | 12 Months Ended |  |  |
--- | --- | --- | --- | ---
Dec. 31, 2020 | Dec. 29, 2020 | Dec. 31, 2019 | Apr. 30, 2019
Class of Stock [Line Items] |  |  |  |
Exercise price (in dollars per share) |  | $ 3.00 |  |
Stock price trigger for redemption of public warrants (in dollars per share) | $ 0.01 |  |  |
Class Of Warrant Or Right, Redemption Of Warrants Or Rights, Stock Price Trigger | $ 0.01 |  |  |
Minimum threshold written notice period for redemption of warrants | 30 days |  |  |
Closing price of share for threshold trading days | 20 days |  |  |
Closing price of share for threshold consecutive trading days | 3 days |  |  |
Class Of Warrant Or Right, Redemption Of Warrants Or Rights, Last Sales Price of the Ordinary Shares | $ 18.00 |  |  |
Warrants outstanding | 11,957,008 |  | 11,957,008 | 10,582,008
Public warrants |  |  |  |
Class of Stock [Line Items] |  |  |  |
Warrants outstanding | 11,957,008 |  |  |
Issued With Units In The IPO [Member] |  |  |  |
Class of Stock [Line Items] |  |  |  |
Warrants outstanding | 10,582,008 |  | 10,582,008 |
Issued To E&A Callet [Member] |  |  |  |
Class of Stock [Line Items] |  |  |  |
Warrants outstanding | 375,000 |  | 375,000 |
Issued With Units To Kunlun [Member] |  |  |  |
Class of Stock [Line Items] |  |  |  |
Warrants outstanding | 1,000,000 |  | 1,000,000 |

X
- Definition Represents the threshold period for written notice of redemption. + References No definition available. + Details
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X
- Definition Class of warrant or right, redemption of warrants or rights, last sales price of the ordinary shares. + References No definition available. + Details
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X
- Definition Price of the entity's common stock which would be required to be attained to trigger the redemption of warrants. + References No definition available. + Details
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X
- Definition Threshold number of specified consecutive trading days for stock price trigger considered for redemption of warrants. + References No definition available. + Details
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- Definition Threshold number of specified trading days for stock price trigger considered for redemption of warrants. + References No definition available. + Details
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
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X
- Definition Exercise price per share or per unit of warrants or rights outstanding. + 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=109259400&loc=d3e21475-112644 + Details
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- Definition Number of warrants or rights outstanding. + References No definition available. + Details
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- Details
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