DERIVATIVE FINANCIAL INSTRUMENTS AND HEDGING ACTIVITIES - Interest Rate Products (Details) - USD ($)		12 Months Ended
	Apr. 16, 2020	Dec. 31, 2020
Treasury Lock | 2020 Incremental Term Loan Facility
Derivative [Line Items]
Term of Extension	5 years
Interest Rate Swap Locks | 2020 Incremental Term Loan Facility
Derivative [Line Items]
Term of Extension	5 years
Derivatives Designated as Cash Flow Hedges | Designated as Hedging Instrument | August 2015
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%
Derivatives Designated as Cash Flow Hedges | Designated as Hedging Instrument | August 2015
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%
Derivatives Designated as Cash Flow Hedges | Designated as Hedging Instrument | April 2016
Derivative [Line Items]
Term		10 years
Notional Amount		$ 100,000
Fixed Rate of Swap		1.60%
Bank Margin on Debt		1.90%
Total Effective Interest Rate		3.50%
Derivatives Designated as Cash Flow Hedges | Designated as Hedging Instrument | April 2016
Derivative [Line Items]
Term		10 years
Notional Amount		$ 100,000
Fixed Rate of Swap		1.60%
Bank Margin on Debt		1.90%
Total Effective Interest Rate		3.50%
Derivatives Designated as Cash Flow Hedges | Designated as Hedging Instrument | July 2016
Derivative [Line Items]
Term		10 years
Notional Amount		$ 100,000
Fixed Rate of Swap		1.26%
Bank Margin on Debt		1.90%
Total Effective Interest Rate		3.16%
Derivatives Designated as Cash Flow Hedges | Designated as Hedging Instrument | June 2020
Derivative [Line Items]
Term		10 years
Notional Amount		$ 250,000
Fixed Rate of Swap		1.10%
Bank Margin on Debt		1.85%
Total Effective Interest Rate		2.95%
Derivatives Designated as Cash Flow Hedges | Designated as Hedging Instrument | Treasury Lock 1
Derivative [Line Items]
Term		10 years
Notional Amount		$ 100,000
Fixed Rate on Derivative		1.53%
Derivatives Designated as Cash Flow Hedges | Designated as Hedging Instrument | Treasury Lock 2
Derivative [Line Items]
Term		10 years
Notional Amount		$ 100,000
Fixed Rate on Derivative		1.53%
Derivatives Designated as Cash Flow Hedges | Designated as Hedging Instrument | Treasury Lock 3
Derivative [Line Items]
Term		10 years
Notional Amount		$ 50,000
Fixed Rate on Derivative		1.35%
Derivatives Designated as Cash Flow Hedges | Designated as Hedging Instrument | Interest Rate Swap Lock 1
Derivative [Line Items]
Term		10 years
Notional Amount		$ 100,000
Fixed Rate on Derivative		1.56%
Derivatives Designated as Cash Flow Hedges | Designated as Hedging Instrument | Interest Rate Swap Lock 2
Derivative [Line Items]
Term		10 years
Notional Amount		$ 100,000
Fixed Rate on Derivative		1.59%
Derivatives Designated as Cash Flow Hedges | Designated as Hedging Instrument | Interest Rate Swap Lock 3
Derivative [Line Items]
Term		10 years
Notional Amount		$ 50,000
Fixed Rate on Derivative		1.41%
Derivatives Designated as Cash Flow Hedges | Designated as Hedging Instrument | Forward-Starting Interest Rate Swap 1
Derivative [Line Items]
Term		10 years
Notional Amount		$ 325,000
Fixed Rate on Derivative		1.40%
Derivatives Designated as Cash Flow Hedges | Designated as Hedging Instrument | Forward-Starting Interest Rate Swap 2
Derivative [Line Items]
Term		4 years
Notional Amount		$ 100,000
Fixed Rate on Derivative		0.88%
Derivatives Designated as Cash Flow Hedges | Designated as Hedging Instrument | Forward-Starting Interest Rate Swap 3
Derivative [Line Items]
Term		4 years
Notional Amount		$ 50,000
Fixed Rate on Derivative		0.74%