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INCOME TAXES - Income Tax Reconciliation (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Reconciliation from the tax computed at statutory income tax rates to the Company's income tax expense
Tax computed at statutory U.S. federal income tax rates	$ (4,760)	$ 20	$ 1,275
Non-controlling interest	(158)	(851)	(648)
Foreign tax rate differential	(4,520)	1,866	(1,769)
Over (under) provided in prior periods	(78)	(520)	(244)
Nondeductible expenses	1,429	1,098	3,359
Benefit Attributable CARES Act		(3,064)
Capitalized transactions costs	898		19
Change in tax reserves	2,524	2,148	3,883
State Taxes, net of federal benefit	(1,399)	(409)	(429)
Change in valuation allowance	3,575	33	(35)
Investment Tax Credit	101	84	(1,215)
Stock-based compensation	510	406	422
Deferred income tax revaluation		(10)	(513)
Total income tax expense (benefit)	$ (1,878)	$ 801	$ 4,105

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Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to capitalized transaction cost.

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The portion of the difference between total income tax expense or benefit as reported in the Income Statement for the period and the expected income tax expense or benefit computed by applying the domestic federal statutory income tax rates to pretax income from continuing operations attributable to the foreign tax reserve made under enacted tax laws.

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Amount of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.

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Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to foreign income tax expense (benefit).

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