INCOME TAXES - Income Tax Rate Reconciliation (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Income Tax Disclosure [Abstract]
Income tax benefit at federal statutory rate	$ (14,732)	$ (1,875)	$ 5,730
State and local income taxes	(555)	985	983
Foreign rate differential	677	313	132
Deferred taxes - change in tax rate	1,244	1,217	(564)
Non-deductible (non-taxable) items	822	330	(122)
Tax credits	1,834	1,876	252
Valuation allowances	14,500	14,131	(13,136)
Effect of DPMH sale	0	0	(1,090)
Unrecognized tax benefits	0	10	150
Withholding taxes	1,195	1,382	3,882
Change in indefinite reinvestment assertion	278	163	(15)
Disallowed interest deductions	0	0	1,010
Return to provision and prior year true-up	3,800	(7,544)	960
Other	(582)	71	(200)
Income tax expense (benefit)	$ 8,481	$ 11,059	$ (2,028)