FAIR VALUE MEASUREMENTS (Tables)

9 Months Ended

Sep. 30, 2021

Fair Value Disclosures [Abstract]

Schedule of fair value of impaired notes receivable

	Level	September 30, 2021		December 31, 2020
Cash equivalents	2	$	63,035	$	177,912
Marketable securities	2	$	29,961	$	—
Notes receivable impaired	3	$	—	$	875