LONG-TERM DEBT LONG-TERM DEBT - 6.5% Senior Notes (Details) - USD ($)
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12 Months Ended |
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Dec. 31, 2016 |
Sep. 19, 2014 |
Jan. 30, 2014 |
| Six Point Five Senior Notes due 2022 [Member] [Member] |
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| Debt Instrument [Line Items] |
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| Debt Instrument, Face Amount |
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$ 500,000,000
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| Debt Instrument, Interest Rate, Effective Percentage |
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8.39%
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| Long-term Debt, Required Interest Coverage Ratio |
2.00
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| Debt Instrument, Minimum Interest Coverage Ratio Required for Incurring Additional Debt |
4.00
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| Six Point Five Senior Notes tack on due 2022 [Member] |
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| Debt Instrument [Line Items] |
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| Debt Instrument, Face Amount |
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$ 150,000,000
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| Prior to February 1, 2017 [Member] | Six Point Five Senior Notes due 2022 [Member] [Member] |
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| Debt Instrument [Line Items] |
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| Long-term Debt, Redemption Price, Percentage of Outstanding Principal |
100.00%
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| Prior to February 1, 2017 [Member] | Six Point Five Senior Notes due 2022 [Member] [Member] | Debt Instrument, Redemption, Period One [Member] |
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| Debt Instrument [Line Items] |
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| Long-term Debt, Redemption Price Plus Premium, Percentage of Outstanding Principal |
106.50%
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| Maximum [Member] | Prior to February 1, 2017 [Member] | Six Point Five Senior Notes due 2022 [Member] [Member] |
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| Debt Instrument [Line Items] |
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| Long-term Debt, Authorized Redemption Amount, Percentage of Outstanding Principal at 106 Point 50 Redemption Price |
40.00%
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| equity offering threshold [Member] | Prior to February 1, 2017 [Member] | Six Point Five Senior Notes due 2022 [Member] [Member] | Debt Instrument, Redemption, Period One [Member] |
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| Debt Instrument [Line Items] |
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| Long-term Debt, Required Remaining Amount Outstanding for Redemption at 106 Point 50 Percent |
50.00%
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| Debt Limitation One [Member] | Six Point Five Senior Notes due 2022 [Member] [Member] |
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| Debt Instrument [Line Items] |
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| Maximum borrowing threshold on credit facility under six point five percent notes |
$ 350,000,000
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| Maximum indebtedness under six point five percent notes |
575,000,000
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| Purchase Money Indebtedness [Member] | Debt Limitation Two [Member] | Six Point Five Senior Notes due 2022 [Member] [Member] |
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| Debt Instrument [Line Items] |
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| Purchase money indebtedness threshold under six point five percent notes |
35,000,000
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| Purchase Money Indebtedness [Member] | Debt Limitation Three [Member] [Member] | Six Point Five Senior Notes due 2022 [Member] [Member] |
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| Debt Instrument [Line Items] |
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| Purchase money indebtedness threshold under six point five percent notes |
0.10
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| Debt of Foreign Subsidiaries [Member] | Debt Limitation Two [Member] | Six Point Five Senior Notes due 2022 [Member] [Member] |
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| Debt Instrument [Line Items] |
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| foreign debt threshold under the six point five percent notes |
60,000,000
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| Debt of Foreign Subsidiaries [Member] | Debt Limitation Three [Member] [Member] | Six Point Five Senior Notes due 2022 [Member] [Member] |
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| Debt Instrument [Line Items] |
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| foreign debt threshold under the six point five percent notes |
0.15
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| General Debt Basket [Member] | Debt Limitation Two [Member] | Six Point Five Senior Notes due 2022 [Member] [Member] |
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| Debt Instrument [Line Items] |
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| general debt basket threshold under the six point five percent notes |
75,000,000
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| General Debt Basket [Member] | Debt Limitation Three [Member] [Member] | Six Point Five Senior Notes due 2022 [Member] [Member] |
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| Debt Instrument [Line Items] |
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| general debt basket threshold under the six point five percent notes |
$ 0.20
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