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17. LEASES (Details 3)
 12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Lease liabilities term 1 year [member]    
PresentationOfLeasesForLesseeLineItems [Line Items]    
Contract Terms 1 year 1 year
Nominal rate 5.69% 8.46%
Actual rate 1.05% 4.97%
Lease liabilities terms 2 years [member]    
PresentationOfLeasesForLesseeLineItems [Line Items]    
Contract Terms 2 years 2 years
Nominal rate 5.96% 9.49%
Actual rate 2.61% 5.37%
Lease liabilities terms 3 years [member]    
PresentationOfLeasesForLesseeLineItems [Line Items]    
Contract Terms 3 years 3 years
Nominal rate 6.80% 10.60%
Actual rate 2.53% 6.28%
Lease liabilities terms 4 years [member]    
PresentationOfLeasesForLesseeLineItems [Line Items]    
Contract Terms 4 years 4 years
Nominal rate 8.50% 11.43%
Actual rate 4.56% 7.01%
Lease liabilities terms 5 years [member]    
PresentationOfLeasesForLesseeLineItems [Line Items]    
Contract Terms 5 years 5 years
Nominal rate 8.98% 11.84%
Actual rate 4.40% 7.28%
Lease liabilities terms 6 years [member]    
PresentationOfLeasesForLesseeLineItems [Line Items]    
Contract Terms 6 years 6 years
Nominal rate 12.13%
Actual rate 7.48%
Lease liabilities terms 8 years [member]    
PresentationOfLeasesForLesseeLineItems [Line Items]    
Contract Terms 8 years 8 years
Nominal rate 10.47% 12.43%
Actual rate 5.71% 7.67%
Lease liabilities terms 9 years [member]    
PresentationOfLeasesForLesseeLineItems [Line Items]    
Contract Terms 9 years 9 years
Nominal rate 10.75% 12.51%
Actual rate 5.97% 7.78%
Lease liabilities terms 10 years [member]    
PresentationOfLeasesForLesseeLineItems [Line Items]    
Contract Terms 10 years 10 years
Nominal rate 11.39% 12.61%
Actual rate 6.64% 7.84%
Lease liabilities terms 11 years [member]    
PresentationOfLeasesForLesseeLineItems [Line Items]    
Contract Terms 11 years 11 years
Nominal rate 12.68%
Actual rate 7.86%
Lease liabilities terms 13 years [member]    
PresentationOfLeasesForLesseeLineItems [Line Items]    
Contract Terms 13 years 13 years
Nominal rate 11.68% 12.81%
Actual rate 7.38% 7.93%
Lease liabilities terms 14 years [member]    
PresentationOfLeasesForLesseeLineItems [Line Items]    
Contract Terms 14 years 14 years
Nominal rate 11.84% 12.86%
Actual rate 7.13% 7.96%
Lease liabilities terms 15 years [member]    
PresentationOfLeasesForLesseeLineItems [Line Items]    
Contract Terms 15 years 15 years
Nominal rate 12.90%
Actual rate 7.97%
Lease liabilities terms 18 years [member]    
PresentationOfLeasesForLesseeLineItems [Line Items]    
Contract Terms 18 years 18 years
Nominal rate 13.01%
Actual rate 8.03%
Lease liabilities terms 20 years [member]    
PresentationOfLeasesForLesseeLineItems [Line Items]    
Contract Terms 20 years 20 years
Nominal rate 13.26% 13.12%
Actual rate 9.00% 8.12%