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DEBT - SUMMARY (Details) - USD ($) $ in Millions | Dec. 31, 2016 | Dec. 31, 2015 | Aug. 31, 2004 | Sep. 30, 2003
--- | --- | --- | --- | ---
Debt |  |  |  |
Capital leases | $ 2.6 | $ 3.1 |  |
Total Debt | 738.9 | 429.9 |  |
Less current portion | (31.8) | (22.0) |  |
Total Long-term Debt | 707.1 | 407.9 |  |
5.79%, payable through 2020 |  |  |  |
Debt |  |  |  |
Total Debt | $ 24.5 | 31.5 |  |
Interest rate (as a percent) | 5.79% |  |  |
3.66%, payable through 2023 |  |  |  |
Debt |  |  |  |
Total Debt | $ 59.3 | 68.4 |  |
Interest rate (as a percent) | 3.66% |  |  |
4.16%, payable through 2027 |  |  |  |
Debt |  |  |  |
Total Debt | $ 55.0 | 55.0 |  |
Interest rate (as a percent) | 4.16% |  |  |
3.37 %, payable through 2027 |  |  |  |
Debt |  |  |  |
Total Debt | $ 75.0 |  |  |
Interest rate (as a percent) | 3.37% |  |  |
3.14%, payable through 2031 |  |  |  |
Debt |  |  |  |
Total Debt | $ 200.0 |  |  |
Interest rate (as a percent) | 3.14% |  |  |
4.31%, payable through 2032 |  |  |  |
Debt |  |  |  |
Total Debt | $ 37.5 | 37.5 |  |
Interest rate (as a percent) | 4.31% |  |  |
4.35%, payable through 2044 |  |  |  |
Debt |  |  |  |
Total Debt | $ 100.0 | 100.0 |  |
Interest rate (as a percent) | 4.35% |  |  |
3.92%, payable through 2045 |  |  |  |
Debt |  |  |  |
Total Debt | $ 75.0 | 75.0 |  |
Interest rate (as a percent) | 3.92% |  |  |
5.34%, payable through 2028 |  |  |  |
Debt |  |  |  |
Total Debt | $ 26.4 | 28.6 |  |
Interest rate (as a percent) | 5.34% |  |  | 5.34%
5.27%, payable through 2029 |  |  |  |
Debt |  |  |  |
Total Debt | $ 28.6 | $ 30.8 |  |
Interest rate (as a percent) | 5.27% |  | 5.27% |
Revolving Credit Facility |  |  |  |
Debt |  |  |  |
Total Debt | $ 55.0 |  |  |

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- Definition Amount equal to the present value (the principal) at the beginning of the lease term of minimum lease payments during the lease term (excluding that portion of the payments representing executory costs such as insurance, maintenance, and taxes to be paid by the lessor, together with any profit thereon) net of payments or other amounts applied to the principal through the balance sheet date. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 840 -SubTopic 30 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6455398&loc=d3e45280-112737 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 16 -Article 7 + Details
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- Definition Contractual interest rate for funds borrowed, under the debt agreement. + 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)(1)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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- Definition Carrying amount of long-term debt, net of unamortized discount or premium, including current and noncurrent amounts. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -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=6876686&loc=d3e534808-122878 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 210.5-02.22) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03.16) -URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 20, 22 -Article 5 + Details
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