SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details) - Customer Concentration Risk	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020	Dec. 31, 2020
Revenue from Contract with Customer, Product and Service Benchmark | Customer A
Concentration Risk [Line Items]
Concentration risk percentage	11.00%	18.00%	18.00%	18.00%
Revenue from Contract with Customer, Product and Service Benchmark | Customer B
Concentration Risk [Line Items]
Concentration risk percentage	16.00%	26.00%	19.00%	20.00%
Revenue from Contract with Customer, Product and Service Benchmark | Customer C
Concentration Risk [Line Items]
Concentration risk percentage	18.00%	16.00%	17.00%	17.00%
Revenue from Contract with Customer, Product and Service Benchmark | Customer D
Concentration Risk [Line Items]
Concentration risk percentage	11.00%	5.00%	6.00%	4.00%
Accounts Receivable | Customer A
Concentration Risk [Line Items]
Concentration risk percentage			15.00%		18.00%
Accounts Receivable | Customer B
Concentration Risk [Line Items]
Concentration risk percentage			14.00%		21.00%
Accounts Receivable | Customer C
Concentration Risk [Line Items]
Concentration risk percentage			13.00%		19.00%
Accounts Receivable | Customer D
Concentration Risk [Line Items]
Concentration risk percentage			17.00%		7.00%