FAIR VALUE MEASUREMENTS, Warrants Classified as Level 3 at Initial Measurement Date (Details) - USD ($)	Dec. 31, 2020	Dec. 11, 2020
Public Warrants [Member]
Liabilities [Abstract]
Warrant liability	$ 20,630,000	$ 15,160,000
Private Placement Warrants [Member]
Liabilities [Abstract]
Warrant liability	$ 10,980,000	8,080,000
CAVU Private Placement Warrants [Member]
Liabilities [Abstract]
Warrant liability		15,160,000
Level 3 [Member] | Public Warrants [Member]
Liabilities [Abstract]
Warrant liability		15,156,250
Level 3 [Member] | Private Placement Warrants [Member]
Liabilities [Abstract]
Warrant liability		$ 8,075,000
Initial Public Offering [Member] | Public Warrants [Member]
Initial Measurement [Abstract]
Number of securities called by each unit (in shares)		0.50
Initial Public Offering [Member] | Class A Common Stock [Member]
Initial Measurement [Abstract]
Number of securities called by each unit (in shares)		1
Private Placement [Member] | Private Placement Warrants [Member]
Initial Measurement [Abstract]
Number of securities called by each unit (in shares)		1
Private Placement [Member] | CAVU Private Placement Warrants [Member]
Initial Measurement [Abstract]
Number of securities called by each unit (in shares)		0.5