LONG-TERM DEBT (Details) - USD ($) $ in Millions	Jun. 30, 2020	Dec. 31, 2019
Senior Debt
Long-term Debt, Gross	$ 689.4	$ 704.1
Less current portion	(55.0)	(59.4)
Long-term portion	625.1	633.3
Total	659.8
Term loan facility
Senior Debt
Total	486.0
Senior Debt
Senior Debt
Less current portion	(55.0)	(59.4)
Less unamortized deferred financing costs	(9.3)	(11.4)
Senior Debt \| Term loan facility
Senior Debt
Long-term Debt, Gross	486.0	488.5
Line of credit
Senior Debt
Long-term Debt, Gross		1.7
Equipment term loans
Senior Debt
Long-term Debt, Gross	173.8	188.4
Total	173.8
Finance And Capital Leases [Member]
Senior Debt
Long-term Debt, Gross	$ 29.6	$ 25.5

Amount, before unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt.

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Amount, after accumulated amortization, of debt issuance costs. Includes, but is not limited to, legal, accounting, underwriting, printing, and registration costs.

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Amount, after unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

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Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
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-Topic 470
-SubTopic 20
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Amount, after unamortized (discount) premium and debt issuance costs, of long-term debt, classified as current. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

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