DEBT - Additional Information (Details)	1 Months Ended	12 Months Ended
	Nov. 30, 2018 USD ($) matuirty_date_extension	Dec. 31, 2019 USD ($)	Dec. 31, 2018 USD ($)	Nov. 30, 2017 USD ($)
Minimum
Line of Credit Facility [Line Items]
Commitment fee percentage	0.375%
Maximum
Line of Credit Facility [Line Items]
Commitment fee percentage	0.50%
Collar Agreements Maturing in 2022
Line of Credit Facility [Line Items]
Notional amount				$ 100,000,000
Secured Debt | Credit Facility
Line of Credit Facility [Line Items]
Maximum borrowing capacity	$ 385,000,000	$ 385,000,000	$ 385,000,000
Term of senior secured credit agreement (in years)	4 years
Number of maturity date extensions | matuirty_date_extension	2
Period of extension of maturity date (in years)	1 year
Additional deferred financing costs		$ 2,900,000
Minimum interest coverage ratio		2.50
Maximum leverage ratio		4.50
Maximum alternative leverage ratio		5.00
Temporary adjustment of leverage ratio		5.00
Temporary alternative adjustment of leverage ratio		5.50
Secured Debt | Revolving Credit Facility | Credit Facility
Line of Credit Facility [Line Items]
Maximum borrowing capacity with accordion feature	$ 500,000,000
Interest rate during period		4.24%	4.86%
Secured Debt | Revolving Credit Facility | Credit Facility | London Interbank Offered Rate (LIBOR) | Minimum
Line of Credit Facility [Line Items]
Basis spread on variable rate	2.00%
Secured Debt | Revolving Credit Facility | Credit Facility | London Interbank Offered Rate (LIBOR) | Maximum
Line of Credit Facility [Line Items]
Basis spread on variable rate	3.00%
Secured Debt | Revolving Credit Facility | Credit Facility | Base Rate | Minimum
Line of Credit Facility [Line Items]
Basis spread on variable rate	1.00%
Secured Debt | Revolving Credit Facility | Credit Facility | Base Rate | Maximum
Line of Credit Facility [Line Items]
Basis spread on variable rate	2.00%
Secured Debt | Standby Letters of Credit | Credit Facility
Line of Credit Facility [Line Items]
Maximum borrowing capacity	$ 20,000,000
Secured Debt | Swingline Sub-facility | Credit Facility
Line of Credit Facility [Line Items]
Maximum borrowing capacity	$ 20,000,000
Unsecured Debt | Credit Facility
Line of Credit Facility [Line Items]
Maximum borrowing capacity		$ 150,000,000.0
Period of material acquisition | Secured Debt | Credit Facility
Line of Credit Facility [Line Items]
Maximum consolidated senior secured leverage ratio		4.00
Before or After Material Acquisition | Secured Debt | Credit Facility
Line of Credit Facility [Line Items]
Maximum consolidated senior secured leverage ratio		3.50
Current liabilities
Line of Credit Facility [Line Items]
Interest payable		$ 600,000	$ 900,000