ORGANIZATION AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Revenue Recognition and Deferred Commissions (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Revenue from External Customer [Line Items]
Non Cash Operating Lease Right Of Use Assets And Lease Liabilities	$ 0	$ 4,638
Sales Revenue Goods Percentage	100.00%	100.00%
Revenue from Contract with Customer, Excluding Assessed Tax	$ 151,407	$ 157,728
Contract with Customer, Liability, Revenue Recognized	4,400
Deferred revenue	5,500	4,400
Deferred revenue associated with customer loyalty programs	4,487	3,127	$ 4,231
Deferred commissions	$ 2,343	$ 1,758
Customer returns, days after original sale date	90 days
Percentage of sale returns	1.50%
Capitalized Contract Cost, Amortization	$ 1,800
Consolidated product sales [Member]
Revenue from External Customer [Line Items]
Sales Revenue Goods Percentage	96.50%	98.00%
Revenue from Contract with Customer, Excluding Assessed Tax	$ 146,200	$ 154,600
Consolidated pack sales [Member]
Revenue from External Customer [Line Items]
Sales Revenue Goods Percentage	2.80%	1.50%
Revenue from Contract with Customer, Excluding Assessed Tax	$ 4,200	$ 2,300
Consolidated other, including freight [Member]
Revenue from External Customer [Line Items]
Sales Revenue Goods Percentage	0.70%	0.50%
Revenue from Contract with Customer, Excluding Assessed Tax	$ 1,000	$ 800