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DERIVATIVE FINANCIAL INSTRUMENTS (Tables)
12 Months Ended
Dec. 31, 2021
DERIVATIVE FINANCIAL INSTRUMENTS  
Schedule of location in the consolidated statements of operations and the amount of realized and unrealized gains (losses) recognized for the derivative contracts not designated as hedging instruments

Consolidated

statements of

Years ended December 31, 

operations location

 

2019

 

2020

 

2021

Interest rate swap contracts (not designated as hedging instruments) — realized loss

 

Interest expenses

 

(1,652)

 

(19,814)

 

Interest rate swap contracts (not designated as hedging instruments) — unrealized (loss) gain

 

Interest expenses

 

(10,606)

 

10,039

 

(12,258)

 

(9,775)