SEGMENT INFORMATION - Revenue by Geographic Location (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019	Dec. 31, 2019
Revenue from External Customer [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	$ 36,605	$ 37,973
Percent of total revenue	100.00%	100.00%
Long-lived assets	$ 5,800		$ 6,100
Inventories, net	11,545		10,152
Consolidated product sales
Revenue from External Customer [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	35,900	$ 37,200
Consolidated pack sales and associate fees
Revenue from External Customer [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	500	600
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	$ 11,700	$ 11,900
Percent of total revenue	32.00%	31.30%
Asia/Pacific
Revenue from External Customer [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	$ 21,400	$ 22,800
Percent of total revenue	58.50%	60.00%
EMEA
Revenue from External Customer [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	$ 3,500	$ 3,300
Percent of total revenue	9.50%	8.70%
Reportable Geographical Components | Americas
Revenue from External Customer [Line Items]
Long-lived assets	$ 4,800		5,100
Inventories, net	5,500		5,400
Reportable Geographical Components | Asia/Pacific
Revenue from External Customer [Line Items]
Long-lived assets	1,000		1,000
Inventories, net	4,800		3,800
Reportable Geographical Components | EMEA
Revenue from External Customer [Line Items]
Long-lived assets	0		0
Inventories, net	$ 1,200		$ 1,000