DEBT - Credit Facility (Details)	1 Months Ended
Oct. 31, 2020 USD ($)	Dec. 31, 2019 USD ($)
Debt Instrument [Line Items]
Remaining borrowing capacity		$ 0
PNC bank, national association \| Subsequent Event
Debt Instrument [Line Items]
Minimum consolidated coverage ratio	3.5
Credit agreement \| PNC bank, national association \| Subsequent Event
Debt Instrument [Line Items]
Minimum required cash and investments held	$ 200,000,000
Maximum consolidated net leverage ratio	3.5
Line of Credit \| PNC bank, national association \| Revolving credit facility \| Subsequent Event
Debt Instrument [Line Items]
Revolving credit agreement term	5 years
Senior notes	$ 100,000,000
Increase in aggregate commitment amount	$ 200,000,000

Debt Instrument, Covenant, Minimum Required Cash and Investments Held

No definition available.

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- Definition

Debt Instrument, Covenants, Leverage Ratio, Maximum

+ References

No definition available.

+ Details

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- Definition

Debt instrument, Covenant, Interest Coverage Ratio, Minimum

+ References

No definition available.

+ Details

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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

Period of time between issuance and maturity of debt instrument, in PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

No definition available.

+ Details

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- Definition

Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

+ 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 210.5-02.19(b),22(b))
-URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682

+ Details

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Balance Type:	credit
Period Type:	instant

- 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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- Definition

Including the current and noncurrent portions, carrying value as of the balance sheet date of Notes with the highest claim on the assets of the issuer in case of bankruptcy or liquidation (with maturities initially due after one year or beyond the operating cycle if longer). Senior note holders are paid off in full before any payments are made to junior note holders.

+ References

Reference 1: 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(a))
-URI http://asc.fasb.org/extlink&oid=120400017&loc=d3e572229-122910

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=120398452&loc=d3e534808-122878

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- Details

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