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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Tables)

3 Months Ended

12 Months Ended

Mar. 31, 2021

Dec. 31, 2020

Concentration Risk [Line Items]

Schedule of significant customers

​

​	​	Accounts Receivable			​	Revenue
​	​	March 31,	​	December 31,	​	Three Months Ended March 31,			​
​		2021		2020		2021		2020	​
Customers:	​	​	​	​	​	​	​	​	​
Customer A	​	*	​	*	​	14	%	*	​
Customer B	​	15	%	30	%	*	​	*	​
Customer C	​	13	%	20	%	*	​	*	​
Customer D	​	36	%	17	%	*	​	*	​
Customer E	​	*	​	*	​	39	%	*	​
Customer F	​	*	​	*	​	*	​	16	%

Customers

Concentration Risk [Line Items]

Schedule of significant customers

​

​	​	​	​	​	​	​	​	​
​	​	Accounts Receivable			​	Revenue
​	​	December 31,			​	Years Ended December 31,
​		2020		2019		2020		2019
Customers:	​	​	​	​	​	​	​	​
Customer A		*		45	%	12	%	*
Customer B		30	%	*		*		*
Customer C		20	%	*		*		*
Customer D		17	%	*		25	%	*

* Total less than 10% for the respective period

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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Tabular disclosure of the nature of a concentration, a benchmark to which it is compared, and the percentage that the risk is to the benchmark.

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