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LONG-TERM DEBT (Details) - USD ($) $ in Thousands |  | 3 Months Ended
--- | --- | ---
Feb. 12, 2018 | Mar. 31, 2018 | Mar. 31, 2017
Debt Instrument [Line Items] |  |  |
Cash proceeds received |  | $ 499,295 | $ 0
Senior Notes Due March 01, 2028 [Member] |  |  |
Debt Instrument [Line Items] |  |  |
Long term debt, face amount | $ 500,000 |  |
Debt instrument, interest rate, stated percentage | 4.20% |  |
Credit facility, expiration date | Mar. 01, 2028 |  |
Periodic payment, interest | $ 10,500 |  |
Periodic payment, interest, exception of first payment | $ 11,550 |  |
Cash proceeds received |  | 495,044 |
Original issue discount |  | 705 |
Debt issuance costs |  | $ 4,251 |

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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 Amount, after accumulated amortization, of debt issuance costs. Includes, but is not limited to, legal, accounting, underwriting, printing, and registration costs. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 45 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=64930785&loc=d3e28555-108399 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.17) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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