SEGMENT INFORMATION - Revenue by Geographic Location (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017	Dec. 31, 2017
Revenue from External Customer [Line Items]
Consolidated total net sales	$ 45,137	$ 47,686	$ 86,520	$ 88,327
Percent of total revenue	100.00%	100.00%	100.00%	100.00%
Long-lived assets	$ 6,500		$ 6,500		$ 4,300
Inventories, net	10,277		10,277		9,385
Consolidated product sales
Revenue from External Customer [Line Items]
Consolidated total net sales	44,500	$ 41,500	85,500	$ 76,600
Consolidated pack sales and associate fees
Revenue from External Customer [Line Items]
Consolidated total net sales	600	6,000	1,100	11,700
Consolidated other
Revenue from External Customer [Line Items]
Consolidated total net sales	0	200	(100)	0
Americas
Revenue from External Customer [Line Items]
Consolidated total net sales	$ 17,300	$ 19,500	$ 31,000	$ 35,000
Percent of total revenue	38.40%	40.90%	35.80%	39.60%
Asia/Pacific
Revenue from External Customer [Line Items]
Consolidated total net sales	$ 24,500	$ 24,700	$ 48,700	$ 46,600
Percent of total revenue	54.30%	51.80%	56.30%	52.80%
EMEA
Revenue from External Customer [Line Items]
Consolidated total net sales	$ 3,300	$ 3,500	$ 6,800	$ 6,700
Percent of total revenue	7.30%	7.30%	7.90%	7.60%
Reportable Geographical Components | Americas
Revenue from External Customer [Line Items]
Long-lived assets	$ 5,200		$ 5,200		2,900
Inventories, net	4,300		4,300		3,500
Reportable Geographical Components | Asia/Pacific
Revenue from External Customer [Line Items]
Long-lived assets	1,200		1,200		1,300
Inventories, net	4,400		4,400		4,500
Reportable Geographical Components | EMEA
Revenue from External Customer [Line Items]
Long-lived assets	100		100		100
Inventories, net	$ 1,600		$ 1,600		$ 1,400