INCOME TAXES - Deferred tax (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Deferred tax assets:
Accruals and advances	$ 10,149	$ 7,174
Stock-based compensation	5,108	4,277
Accruals for chargebacks and returns	18,371	13,831
Inventory	5,983	6,101
Intangible asset	23,470	21,911
Net operating loss carryforwards	6,038	4,090
Other	8,758	2,171
Total deferred tax assets	77,877	59,555
Deferred tax liabilities:
Depreciation	(6,601)	(5,913)
Intangible assets	(11)	(11)
Other	(2,879)	(1,664)
Total deferred tax liabilities	(9,491)	(7,588)
Valuation allowance	(450)	(263)
Deferred tax assets, net of deferred tax liabilities and valuation allowance	$ 67,936	$ 51,704