SEGMENT INFORMATION - Revenue by Geographic Location (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019	Dec. 31, 2019
Revenue from External Customer [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	$ 37,966	$ 39,656	$ 112,218	$ 118,340
Percent of total revenue	100.00%	100.00%	100.00%	100.00%
Long-lived assets	$ 5,400		$ 5,400		$ 6,100
Inventories, net	13,512		13,512		10,152
Consolidated product sales
Revenue from External Customer [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	35,700	$ 38,700	108,700	$ 115,800
Consolidated pack sales and associate fees
Revenue from External Customer [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	2,000	700	2,800	1,800
Consolidated other
Revenue from External Customer [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	300	300	700	700
Americas
Revenue from External Customer [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	$ 11,400	$ 11,800	$ 34,100	$ 36,100
Percent of total revenue	30.00%	29.70%	30.40%	30.50%
Asia/Pacific
Revenue from External Customer [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	$ 23,000	$ 24,300	$ 67,900	$ 71,900
Percent of total revenue	60.50%	61.20%	60.50%	60.80%
EMEA
Revenue from External Customer [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	$ 3,600	$ 3,600	$ 10,200	$ 10,300
Percent of total revenue	9.50%	9.10%	9.10%	8.70%
Reportable Geographical Components | Americas
Revenue from External Customer [Line Items]
Long-lived assets	$ 4,500		$ 4,500		5,100
Inventories, net	6,100		6,100		5,400
Reportable Geographical Components | Asia/Pacific
Revenue from External Customer [Line Items]
Long-lived assets	900		900		1,000
Inventories, net	5,900		5,900		3,800
Reportable Geographical Components | EMEA
Revenue from External Customer [Line Items]
Long-lived assets	0		0		0
Inventories, net	$ 1,500		$ 1,500		$ 1,000