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INCOME TAXES (Uncertain Tax Positions) (Details) - USD ($) $ in Millions	3 Months Ended	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Income taxes
Reserve for uncertain tax positions		$ 1.0		$ 0.7
Maximum
Income taxes
Reserve for uncertain tax positions	$ 0.1		$ 0.1
Federal, Foreign, and State Jurisdictions | Maximum
Income taxes
Interest paid on income tax obligations		0.1	0.1	0.1
Foreign | Maximum
Income taxes
Income tax accrued interest		0.1
Federal
Income taxes
Reserve for uncertain tax positions				0.7
Decrease in reserve, Expiration of statute of limitations	0.7
Increase in reserve, Prior period tax positions		0.9
Federal | 2015 tax year | Maximum
Income taxes
Reserve for uncertain tax positions	$ 0.1	$ 0.1	$ 0.1	$ 0.1

X

- Definition

The amount of accrued interest on income tax obligations as of the balance sheet date.

+ References

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- Definition

The amount of interest paid during the period related to income taxes.

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- Definition

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- Definition

Amount of unrecognized tax benefits.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section 45
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- Definition

Amount of increase in unrecognized tax benefits resulting from tax positions taken in prior period tax returns.

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-Name Accounting Standards Codification
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Amount of decrease in unrecognized tax benefits resulting from lapses of applicable statutes of limitations.

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