ACCOUNTS RECEIVABLE (Details) - USD ($)	3 Months Ended
Mar. 31, 2021	Mar. 31, 2020
Receivables [Abstract]
Accounts Receivable, Allowance for Credit Loss, Writeoff	$ 2,721	$ 223,335

Amount of direct write-downs of accounts receivable charged against the allowance.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 326
-SubTopic 20
-Section 50
-Paragraph 13
-Subparagraph (d)
-URI http://asc.fasb.org/extlink&oid=121599337&loc=SL82919249-210447

Name:	us-gaap_AllowanceForDoubtfulAccountsReceivableWriteOffs
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration