FAIR VALUE MEASUREMENTS, Changes in Fair Value of Level 3 Warrant Liabilities (Details) - USD ($)	5 Months Ended	12 Months Ended
Dec. 31, 2019	Dec. 31, 2020
Warrant Liabilities [Member]
Unobservable Input Reconciliation [Roll Forward]
Fair value, beginning balance	$ 0	$ 11,270,000
Initial measurement on November 26, 2019	16,790,000
Transfer to Level 1		(7,350,000)
Change in fair value	(5,520,000)	13,280,000
Fair value, ending balance	11,270,000	17,200,000
Private Placement [Member]
Unobservable Input Reconciliation [Roll Forward]
Fair value, beginning balance	0	3,920,000
Initial measurement on November 26, 2019	5,840,000
Transfer to Level 1		0
Change in fair value	(1,920,000)	13,280,000
Fair value, ending balance	3,920,000	17,200,000
Public Warrant [Member]
Unobservable Input Reconciliation [Roll Forward]
Fair value, beginning balance	0	7,350,000
Initial measurement on November 26, 2019	10,950,000
Transfer to Level 1		(7,350,000)
Change in fair value	(3,600,000)	0
Fair value, ending balance	$ 7,350,000	$ 0

A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

No definition available.

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- Definition

Amount of transfers of financial instrument classified as an asset out of level 3 of the fair value hierarchy.

+ 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 (c)(3)
-URI http://asc.fasb.org/extlink&oid=117815213&loc=d3e19207-110258

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- Definition

Amount of gain (loss) recognized in income from liability measured at fair value on recurring basis using unobservable input (level 3).

+ 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 (c)(1)
-URI http://asc.fasb.org/extlink&oid=117815213&loc=d3e19207-110258

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- Definition

Amount of issuances of financial instrument classified as a liability measured using unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 820
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)(2)
-URI http://asc.fasb.org/extlink&oid=117815213&loc=d3e19207-110258

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- Definition

Fair value of financial instrument classified as a liability measured using unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 820
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=117815213&loc=d3e19207-110258

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