SEGMENT INFORMATION - Revenue by Geographic Location (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020	Dec. 31, 2020
Revenue from External Customer [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	$ 38,319	$ 36,605
Percent of total revenue	100.00%	100.00%
Long-lived assets	$ 4,900		$ 5,400
Inventories, net	13,625		12,827
Consolidated product sales
Revenue from External Customer [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	35,900	$ 35,900
Consolidated pack sales and associate fees
Revenue from External Customer [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	2,200	500
Consolidated other
Revenue from External Customer [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	200	200
Americas
Revenue from External Customer [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	$ 11,000	$ 11,700
Percent of total revenue	28.70%	32.00%
Asia/Pacific
Revenue from External Customer [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	$ 23,500	$ 21,400
Percent of total revenue	61.40%	58.40%
EMEA
Revenue from External Customer [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	$ 3,800	$ 3,500
Percent of total revenue	9.90%	9.60%
Reportable Geographical Components | Americas
Revenue from External Customer [Line Items]
Long-lived assets	$ 4,100		4,400
Inventories, net	5,700		5,800
Reportable Geographical Components | Asia/Pacific
Revenue from External Customer [Line Items]
Long-lived assets	800		1,000
Inventories, net	6,200		5,700
Reportable Geographical Components | EMEA
Revenue from External Customer [Line Items]
Long-lived assets	0		0
Inventories, net	$ 1,700		$ 1,300