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COMMITMENTS AND CONTINGENCIES - Additional Information (Details) customer in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2017 USD ($) customer | Sep. 30, 2017 USD ($)
Commitments and Contingencies Disclosure [Line Items] |  |
Maximum potential future payments required to make under guarantees | $ 0 | $ 0
Performance Bonds |  |
Commitments and Contingencies Disclosure [Line Items] |  |
Notional amount | 0 | 0
Letter of Credit |  |
Commitments and Contingencies Disclosure [Line Items] |  |
Notional amount | $ 0 | $ 0
Maximum |  |
Commitments and Contingencies Disclosure [Line Items] |  |
Debt instrument, term (or less) |  | 1 year
Cybersecurity Incident | United States |  |
Commitments and Contingencies Disclosure [Line Items] |  |
Number of customers impacted | customer | 145,500 |
Number of customers, personal information accessed | customer | 182 |
Cybersecurity Incident | United States and Canada |  |
Commitments and Contingencies Disclosure [Line Items] |  |
Number of customers, credit card information accessed | customer | 209 |
Cybersecurity Incident | Canada |  |
Commitments and Contingencies Disclosure [Line Items] |  |
Number of customers, personal information accessed | customer | 8 |
Cybersecurity Incident | United Kingdom |  |
Commitments and Contingencies Disclosure [Line Items] |  |
Number of customers, personal information accessed | customer | 690 |
Investigation, Remediation, Legal, And Other Professional Services |  |
Commitments and Contingencies Disclosure [Line Items] |  |
Insurance coverage deductible |  | $ 7,500,000.0
Investigation, Remediation, Legal, And Other Professional Services | Selling, General and Administrative Expenses |  |
Commitments and Contingencies Disclosure [Line Items] |  |
Cybersecurity incident remediation, legal, and other professional costs | $ 27,300,000 |
Free Credit File Monitoring And Identity Theft Protection Offering |  |
Commitments and Contingencies Disclosure [Line Items] |  |
Cybersecurity incident remediation, legal, and other professional costs |  | 4,700,000
Free Credit File Monitoring And Identity Theft Protection Offering | Minimum |  |
Commitments and Contingencies Disclosure [Line Items] |  |
Potential loss estimate | 56,000,000 | 56,000,000
Free Credit File Monitoring And Identity Theft Protection Offering | Maximum |  |
Commitments and Contingencies Disclosure [Line Items] |  |
Potential loss estimate | $ 110,000,000 | $ 110,000,000

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