INCOME TAXES - Deferred Tax Assets and Liabilities (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Deferred tax assets:
U.S. federal and state net operating losses	$ 4,181	$ 5,529
Foreign net operating losses	248	165
Allowance for credit losses	537	483
Share-based compensation	1,854	1,468
Accrued compensation	762	487
Deferred revenue	895	725
Other	827	0
Total deferred tax assets	9,304	8,857
Deferred tax liabilities
Depreciation	(3,176)	(2,460)
Intangible amortization	(6,914)	(6,924)
Debt origination costs	(392)	0
Total deferred tax liabilities	(10,482)	(9,384)
Valuation allowance	(248)	(165)
Net deferred tax liability	$ (1,426)	$ (692)