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OTHER LONG-TERM ASSETS, NET
 12 Months Ended
Dec. 31, 2023
Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract]  
OTHER LONG-TERM ASSETS, NET
11. OTHER LONG-TERM ASSETS, NET

Other long-term assets, net consist of the following (in thousands):
 December 31,
 20232022
Available-for-sale debt securities$10,484 $— 
Prepaid other, long-term portion1,748 1,827 
Other long-term assets567 919 
Total other long-term assets, net$12,799 $2,746