FAIR VALUE MEASUREMENTS, Private Placement Warrants Level 3 Fair Value Measurement (Details)	Mar. 31, 2021 $ / shares	Dec. 31, 2020 $ / shares
Fair Value Measurements [Abstract]
Term	5 years
Private Placement Warrants [Member]
Fair Value Measurements [Abstract]
Term	6 years 2 months 12 days	6 years 5 months 12 days
Warrants [Abstract]
Warrants exercise price (in dollars per share)	$ 1.34	$ 1.36
Private Placement Warrants [Member] \| Risk-Free Interest Rate [Member]
Fair Value Measurements [Abstract]
Measurement input	0.0121	0.0057
Private Placement Warrants [Member] \| Dividend Yield [Member]
Fair Value Measurements [Abstract]
Measurement input	0.0000	0.0000
Private Placement Warrants [Member] \| Expected Volatility [Member]
Fair Value Measurements [Abstract]
Measurement input	0.183	0.175
Private Placement Warrants [Member] \| Exercise Price [Member]
Fair Value Measurements [Abstract]
Measurement input	11.50	11.50
Private Placement Warrants [Member] \| Unit Price [Member]
Fair Value Measurements [Abstract]
Measurement input	9.95	10.36

Exercise price per share or per unit of warrants or rights outstanding.

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

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Value of input used to measure outstanding warrant and right embodying unconditional obligation requiring redemption by transferring asset at specified or determinable date or upon event certain to occur.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 820
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (bbb)(2)
-URI http://asc.fasb.org/extlink&oid=117815213&loc=d3e19207-110258

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Period between issuance and expiration of outstanding warrant and right embodying unconditional obligation requiring redemption by transferring asset at specified or determinable date or upon event certain to occur, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 820
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (bbb)(2)
-URI http://asc.fasb.org/extlink&oid=117815213&loc=d3e19207-110258

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