OTHER LONG-TERM LIABILITIES- Additional informtaion (Details)	12 Months Ended
Dec. 31, 2020 USD ($) shares
OTHER LONG-TERM LIABILITIES
Net present value \| $	$ 3,303,330
Purchase price is payable \| $	$ 1,101,110
Series IV Preferred Stock
OTHER LONG-TERM LIABILITIES
Preferred shareholders as a result of private stock purchases \| shares	320,333
Series V Preferred Stock
OTHER LONG-TERM LIABILITIES
Preferred shareholders as a result of private stock purchases \| shares	25,000

Number of shares that have been repurchased and retired during the period.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(28))
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Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section S99
-Paragraph 1
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Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(29))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section 50
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Namespace Prefix:	us-gaap_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration