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SUMMARY OF QUANTITATIVE INFORMATION ABOUT LEVEL 3 FAIR VALUE MEASUREMENTS OF POST-EMPLOYMENT BENEFITS (Details) - Fair Value, Inputs, Level 3 [Member]	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Defined Benefit Plan Disclosure [Line Items]
Discount Rate	5.98%	4.93%
Expected Return on Plan Assets		4.93%
Wage Increase Rate	7.00%	9.00%
Disability Rate	5.00%	5.00%
Normal retirement age	58 years	58 years
Age 20 - 29 [Member]
Defined Benefit Plan Disclosure [Line Items]
Withdrawal Rate	5.00%	5.00%
Age 30 - 39 [Member]
Defined Benefit Plan Disclosure [Line Items]
Withdrawal Rate	4.00%	4.00%
Age 40 - 44 [Member]
Defined Benefit Plan Disclosure [Line Items]
Withdrawal Rate	3.00%	3.00%
Age 45 - 49 [Member]
Defined Benefit Plan Disclosure [Line Items]
Withdrawal Rate	2.00%	2.00%
Age 50 - 57 [Member]
Defined Benefit Plan Disclosure [Line Items]
Withdrawal Rate	1.00%	1.00%
Age > 57 [Member]
Defined Benefit Plan Disclosure [Line Items]
Withdrawal Rate	0.00%	0.00%

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Weighted average rate for present value of future retirement benefits cash flows, used to determine benefit obligation of defined benefit plan.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (k)(1)
-URI http://asc.fasb.org/extlink&oid=123447040&loc=d3e1928-114920

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Weighted average rate increase of compensation, used to determine benefit obligation of defined benefit plan. Plan includes, but is not limited to, pay-related defined benefit plan.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (k)(2)
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