REVENUE RECOGNITION - Narrative (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2022 USD ($) segment	Mar. 31, 2021 USD ($)	Dec. 31, 2021 USD ($)
Disaggregation of Revenue [Line Items]
Contract liabilities (deferred revenue)	$ 1,904		$ 2,020
Total net revenue	$ 46,626	$ 40,858
Number of reportable segments | segment	2
Subscription Sales
Disaggregation of Revenue [Line Items]
Membership term	12 months
Contract liabilities (deferred revenue)	$ 671		$ 752
Outbound delivery fees
Disaggregation of Revenue [Line Items]
Total net revenue	319	472
Marketing Fees
Disaggregation of Revenue [Line Items]
Total net revenue	$ 371	$ 359