INCOME TAX - SCHEDULE OF DEFERRED TAX ASSETS (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Deferred tax assets:
Fixed assets	$ 13	$ 62
Allowance for bad debts	442	281
Inventory	192	82
Deferred revenue	4,232	2,190
Stock compensation	645	300
Others		127
Interest Expense Limitation	1,903	955
Net operating loss carry-forwards	8,165	7,361
Deferred tax assets (liabilities)	15,592	11,358
Valuation allowance	(11,294)	(7,959)
Deferred tax assets	4,298	3,399
Deferred tax liabilities:
Intangible assets	(11,452)	(10,759)
Accrued expenses	(413)	(404)
Prepaid expenses	(137)	(138)
Others	(745)
Deferred tax liabilities	(12,747)	(11,301)
Deferred tax liabilities, net	$ (8,449)	$ (7,902)