FAIR VALUE OF FINANCIAL INSTRUMENTS - Recurring Fair Value Measurements (Details) - Other Long Term Liabilities - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
Liabilities, Fair Value Disclosure [Abstract]
Deferred compensation	$ 25,645	$ 33,229
Interest Rate Cash Flow Hedge	3,399	189
Fair Value, Inputs, Level 1
Liabilities, Fair Value Disclosure [Abstract]
Deferred compensation	20,290	25,592
Interest Rate Cash Flow Hedge	0	0
Fair Value, Inputs, Level 2
Liabilities, Fair Value Disclosure [Abstract]
Deferred compensation	0	0
Interest Rate Cash Flow Hedge	3,399	189
Fair Value, Inputs, Level 3
Liabilities, Fair Value Disclosure [Abstract]
Deferred compensation	0	0
Interest Rate Cash Flow Hedge	0	0
Fair Value Measured at Net Asset Value
Liabilities, Fair Value Disclosure [Abstract]
Deferred compensation	5,355	7,637
Interest Rate Cash Flow Hedge	$ 0	$ 0