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CONTRACTS WITH CUSTOMERS AND REVENUE CONCENTRATION (Details) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended 12 Months Ended
Sep. 30, 2021
Sep. 30, 2020
Sep. 30, 2021
Sep. 30, 2020
Dec. 31, 2020
CONTRACTS WITH CUSTOMERS AND REVENUE CONCENTRATION (Details) [Line Items]          
Contract with Customer, Asset, Allowance for Credit Loss $ 2,730   $ 2,730   $ 2,194
Capitalized Contract Cost, Gross 4,475   4,475   $ 3,792
Amortization of Deferred Sales Commissions 424 $ 220 963 $ 660  
Deferred Revenue, Revenue Recognized 460 $ 259 4,308 $ 3,652  
Revenue, Remaining Performance Obligation, Amount $ 23,945   $ 23,945    
Revenue, Remaining Performance Obligation, Percentage 71.00%   71.00%    
Accounts Receivable [Member]          
CONTRACTS WITH CUSTOMERS AND REVENUE CONCENTRATION (Details) [Line Items]          
Concentration Risk, Benchmark Description     No customers represented more than 10% of our net accounts receivable balance as of September 30, 2021 and December 31, 2020, respectively.   No customers represented more than 10% of our net accounts receivable balance as of September 30, 2021 and December 31, 2020, respectively.
Revenue Benchmark          
CONTRACTS WITH CUSTOMERS AND REVENUE CONCENTRATION (Details) [Line Items]          
Concentration Risk, Benchmark Description     During the three and nine months ended September 30, 2021 and 2020, there were no customers that individually represented 10% or more of consolidated revenue.   During the three and nine months ended September 30, 2021 and 2020, there were no customers that individually represented 10% or more of consolidated revenue.
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2021-09-30          
CONTRACTS WITH CUSTOMERS AND REVENUE CONCENTRATION (Details) [Line Items]          
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Period 12 months   12 months