DERIVATIVE FINANCIAL INSTRUMENTS AND HEDGING ACTIVITIES - Outstanding Derivative Products (Details) - Derivatives designated as cash flow hedges - Derivatives designated as cash flow hedges	6 Months Ended
	Jun. 30, 2021 USD ($)
Interest Rate Swap 1
Derivative [Line Items]
Term	9 years
Notional Amount	$ 170,000
Fixed Rate of Swap	2.20%
Bank Margin on Debt	1.60%
Total Effective Interest Rate	3.80%
Interest Rate Swap 2
Derivative [Line Items]
Term	9 years
Notional Amount	$ 180,000
Fixed Rate of Swap	2.35%
Bank Margin on Debt	1.60%
Total Effective Interest Rate	3.95%
Interest Rate Swap 3
Derivative [Line Items]
Term	10 years
Notional Amount	$ 100,000
Fixed Rate of Swap	1.60%
Bank Margin on Debt	1.65%
Total Effective Interest Rate	3.25%
Interest Rate Swap 4
Derivative [Line Items]
Term	10 years
Notional Amount	$ 100,000
Fixed Rate of Swap	1.60%
Bank Margin on Debt	1.65%
Total Effective Interest Rate	3.25%
Forward-Starting Interest Rate Swap 1
Derivative [Line Items]
Term	4 years
Notional Amount	$ 100,000
Fixed rate on derivative	0.88%
Forward-Starting Interest Rate Swap 2
Derivative [Line Items]
Term	4 years
Notional Amount	$ 50,000
Fixed rate on derivative	0.74%
Forward-Starting Interest Rate Swap 3
Derivative [Line Items]
Term	7 years
Notional Amount	$ 200,000
Fixed rate on derivative	0.77%