SIGNIFICANT ACCOUNTING POLICIES - Property, Plant and Equipment, Net (Details)	12 Months Ended
Dec. 31, 2017
Furniture and fixtures
Property, Plant and Equipment, Net
Estimated life	5 years
Equipment and information systems
Property, Plant and Equipment, Net
Estimated life	5 years
Buildings \| Minimum
Property, Plant and Equipment, Net
Estimated life	10 years
Buildings \| Maximum
Property, Plant and Equipment, Net
Estimated life	40 years
Leasehold improvements \| Maximum
Property, Plant and Equipment, Net
Estimated life	10 years

Useful life of long lived, physical assets used in the normal conduct of business and not intended for resale, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Examples include, but not limited to, land, buildings, machinery and equipment, office equipment, furniture and fixtures, and computer equipment.

No definition available.

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Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration