FAIR VALUE MEASUREMENTS - Changes in the fair value of warrant liabilities (Details)	6 Months Ended
	Dec. 31, 2020 USD ($)
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Fair Value	$ 16,032,000
Level 3
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Initial measurement	10,472,500
Initial Measurement Of Warrant Liability Over Allotment	18,880
Change in valuation inputs or other assumptions	18,347,920
Fair value as of December 31, 2020	28,839,300
Private Placement Warrants | Level 3
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Initial measurement	4,572,500
Initial Measurement Of Warrant Liability Over Allotment	7,080
Change in valuation inputs or other assumptions	8,227,720
Fair value as of December 31, 2020	12,807,300
Public warrants | Level 3
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Initial measurement	5,900,000
Initial Measurement Of Warrant Liability Over Allotment	11,800
Change in valuation inputs or other assumptions	10,120,200
Fair value as of December 31, 2020	$ 16,032,000