LONG-TERM DEBT - Credit Facility (Details) - Senior Debt Obligations $ in Millions	12 Months Ended
Dec. 31, 2019 USD ($)
New Revolver
Debt Instrument [Line Items]
Credit Facility	$ 250.0
Line of Credit Facility, Fair Value of Amount Outstanding	227.3
Undrawn amount of the Revolver	$ 127.1
New Revolver \| Maximum
Debt Instrument [Line Items]
Line of Credit Facility, Commitment Fee Percentage	0.50%
New Revolver \| Minimum
Debt Instrument [Line Items]
Line of Credit Facility, Commitment Fee Percentage	0.375%
New Revolver \| Prime Rate
Debt Instrument [Line Items]
Debt Instrument, Basis Spread on Variable Rate	1.00%
New Revolver \| London Interbank Offered Rate (LIBOR)
Debt Instrument [Line Items]
Debt Instrument, Basis Spread on Variable Rate	2.00%
Original Revolver
Debt Instrument [Line Items]
Credit Facility	$ 250.0
Line of Credit Facility, Fair Value of Amount Outstanding	$ 22.7
Original Revolver \| Maximum
Debt Instrument [Line Items]
Line of Credit Facility, Commitment Fee Percentage	0.50%
Original Revolver \| Minimum
Debt Instrument [Line Items]
Line of Credit Facility, Commitment Fee Percentage	0.375%
Original Revolver \| One Month LIBOR
Debt Instrument [Line Items]
Debt Instrument, Basis Spread on Variable Rate	1.00%
Original Revolver \| London Interbank Offered Rate (LIBOR)
Debt Instrument [Line Items]
Debt Instrument, Basis Spread on Variable Rate	2.25%
Original Revolver \| Federal Reserve Bank of New York
Debt Instrument [Line Items]
Debt Instrument, Basis Spread on Variable Rate	0.50%
Original Revolver \| Base Rate
Debt Instrument [Line Items]
Debt Instrument, Basis Spread on Variable Rate	1.25%
Term B-2 Loan, due November 17, 2024
Debt Instrument [Line Items]
Credit Facility	$ 770.0
Debt Instrument, Periodic Quarterly Payments, Percent	1.00%
Term B-2 Loan, due November 17, 2024 \| London Interbank Offered Rate (LIBOR)
Debt Instrument [Line Items]
Debt Instrument, Basis Spread on Variable Rate	2.50%
Term B-2 Loan, due November 17, 2024 \| Base Rate
Debt Instrument [Line Items]
Debt Instrument, Basis Spread on Variable Rate	1.50%

Debt Instrument, Periodic Quarterly Payments, Percent

No definition available.

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- Definition

Percentage points added to the reference rate to compute the variable rate on the debt instrument.

+ References

No definition available.

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

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- Definition

The carrying value as of the balance sheet date of the current and noncurrent portions of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount. Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the agreement.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(22))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-03(16))
-URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-03(16))
-URI http://asc.fasb.org/extlink&oid=119400593&loc=d3e572229-122910

+ Details

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- Definition

The fee, expressed as a percentage of the line of credit facility, for the line of credit facility regardless of whether the facility has been used.

+ References

No definition available.

+ Details

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- Definition

Fair value of the amount outstanding under the credit facility.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 825
-SubTopic 10
-Section 50
-Paragraph 10
-URI http://asc.fasb.org/extlink&oid=118260190&loc=d3e13433-108611

+ Details

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- Definition

Amount of borrowing capacity currently available under the credit facility (current borrowing capacity less the amount of borrowings outstanding).

+ References

+ Details

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