COMMITMENTS AND CONTINGENCIES (Narrative) (Details)	3 Months Ended
Mar. 31, 2017
Maximum [Member]
Long Term Purchase Commitment [Line Items]
Maximum term of supply agreements with various food vendors (in Duration)	5 years

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.

No definition available.

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