BASIS OF PRESENTATION AND SIGNIFICANT ACCOUNTING POLICIES, Revenue Recognition (Details)	6 Months Ended
	Jun. 30, 2018
Minimum [Member]
Revenue Recognition [Abstract]
Number of days for customer to make payment after being invoiced	30 days
Absolute right of return for shipments to wholesale customers on consignment terms	6 months
Maximum [Member]
Revenue Recognition [Abstract]
Number of days for customer to make payment after being invoiced	90 days
Period for return of jewels and finished jewelry for credit	30 days
Absolute right of return for shipments to wholesale customers on consignment terms	1 year
Customer payment period on consignment shipment	60 days
Online Channels [Member] | Maximum [Member]
Revenue Recognition [Abstract]
Period for return of jewels and finished jewelry for credit	60 days