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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Schedule of estimated useful life for the intangible assets) (Details)	12 Months Ended
	Dec. 31, 2018
Operating license [Member]
Finite-Lived Intangible Assets [Line Items]
Amortization period	20 years
Favorable leases [Member]
Finite-Lived Intangible Assets [Line Items]
Amortization period	12 years
Customer relationship [Member] | Minimum [Member]
Finite-Lived Intangible Assets [Line Items]
Amortization period	5 years
Customer relationship [Member] | Maximum [Member]
Finite-Lived Intangible Assets [Line Items]
Amortization period	16 years
Operating Lease [Member] | Minimum [Member]
Finite-Lived Intangible Assets [Line Items]
Amortization period	9 years
Operating Lease [Member] | Maximum [Member]
Finite-Lived Intangible Assets [Line Items]
Amortization period	16 years
Software [Member] | Minimum [Member]
Finite-Lived Intangible Assets [Line Items]
Amortization period	3 years
Software [Member] | Maximum [Member]
Finite-Lived Intangible Assets [Line Items]
Amortization period	5 years

X

- Definition

Useful life of finite-lived intangible assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Details

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Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

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Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

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Namespace Prefix:
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Balance Type:
Period Type:

X

- Details

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Period Type:

X

- Details

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Period Type:

X

- Details

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Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

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Namespace Prefix:
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Balance Type:
Period Type: