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Other Long-Term Liabilities (Tables)
 6 Months Ended
Jun. 30, 2023
Other Liabilities, Noncurrent [Abstract]  
Schedule of Other Long-term Liabilities
Other long-term liabilities consist of the following as of December 31, 2022 and June 30, 2023 (in thousands):
December 31, 2022June 30, 2023
Contract liabilities, net of current portion$36,540 $33,619 
Asset retirement obligations6,283 5,266 
Other3,183 2,909 
Other long-term liabilities$46,006 $41,794