GOODWILL (Narrative) (Details)	3 Months Ended
Mar. 31, 2019 USD ($) segment	Mar. 31, 2018 USD ($)
Goodwill [Line Items]
Goodwill impairment charges	$ 0	$ 0
Number of Reportable Segments \| segment	4
Calcium [Member]
Goodwill [Line Items]
Goodwill, accumulated impairment losses	$ 252,664,000

Amount of accumulated impairment loss for an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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Amount of loss from the write-down of an asset representing the future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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Number of segments reported by the entity. A reportable segment is a component of an entity for which there is an accounting requirement to report separate financial information on that component in the entity's financial statements.

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