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LAND USE RIGHTS, NET
 12 Months Ended
Dec. 31, 2022
Land and Land Improvements [Abstract]  
LAND USE RIGHTS, NET
8. LAND USE RIGHTS, NET
Land use rights consisted of the following:
December 31,
2021		December 31,
2022
Cost of land use rights$16,390 $15,143 
Less: accumulated amortization(2,382)(2,504)
Land use rights, net$14,008 $12,639 
The land use rights were acquired for the use of the Group’s production facilities. Land use rights are amortized on a straight-line basis for 50 years or shorter of the estimated usage periods or the terms of the land use rights agreements. The Group recorded amortization expenses of $303, $325 and $310 for the years ended December 31, 2020, 2021 and 2022, respectively. Future amortization expense is $310 per year for each of the next five years through December 31, 2027 and thereafter.