SUMMARY OF CRITICAL ACCOUNTING POLICIES AND ESTIMATES - Narrative (Details) - USD ($)		6 Months Ended
	Jul. 25, 2019	Jun. 30, 2020
New Accounting Pronouncements or Change in Accounting Principle
Asset impairment		$ 0
Common Class B and Class A
New Accounting Pronouncements or Change in Accounting Principle
Annual return (as a percent)		22.50%
Percentage of aggregate capital investment to be added to original per-unit price to determine cash purchase price (as a percent)	50.00%	50.00%