LONG-TERM OBLIGATIONS - Summary of Long-Term Debt Additional Information (Details) - USD ($)	12 Months Ended
Dec. 31, 2017	Aug. 28, 2015
Term Loan [Member] \| 100 Million Term Loan [Member]
Debt Instrument [Line Items]
Principal amount	$ 100,000,000	$ 100,000,000
Maturity date	Aug. 28, 2020
Term Loan [Member] \| 100 Million Term Loan [Member] \| Eurodollar [Member]
Debt Instrument [Line Items]
Basis spread on variable rate (percent)	3.57%
Revolving Credit Facility [Member] \| 200 Million Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Principal amount	$ 200,000,000	$ 200,000,000.0
Maturity date	Aug. 28, 2020

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

No definition available.

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- Definition

Face (par) amount of debt instrument at time of issuance.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 55
-Paragraph 8
-URI http://asc.fasb.org/extlink&oid=64930739&loc=d3e28878-108400

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 45
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=64930785&loc=d3e28551-108399

+ 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

Date when the debt instrument is scheduled to be fully repaid, in CCYY-MM-DD format.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.22(a)(2))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

+ Details

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- Details

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- Details

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- Details

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- Details

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- Details

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