INCOME TAXES - Deferred Tax Assets (Details) - USD ($) $ in Thousands	Dec. 31, 2024	Dec. 31, 2023
Deferred tax assets:
Net operating loss carry forward	$ 2,414	$ 3,005
Research and development and other credit carry forward	31,988	30,633
Foreign tax credit carry forward	1,977	7,611
Capitalized research and experimental expenses	26,426	20,403
Accruals deductible in different periods	6,049	4,037
Leases	1,113	1,282
Stock-based compensation	2,087	1,882
Total deferred tax assets	72,054	68,853
Less: valuation allowance	(67,946)	(64,152)
Deferred tax assets, net of valuation allowance	4,108	4,701
Deferred tax liabilities:
Property and equipment, net	(752)	(612)
Operating lease right-of-use assets	(1,082)	(1,266)
Intangible assets	(2,366)	(2,995)
Deferred tax liabilities	(4,200)	(4,873)
Net deferred tax assets (liabilities):
Net deferred tax liabilities	$ (92)	$ (172)