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Other Long-Term Liabilities | 12 Months Ended
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Dec. 31, 2023
Other Liabilities, Noncurrent [Abstract] |
Other Long-Term Liabilities | Other Long-Term Liabilities Other long-term liabilities consist of the following as of December 31, 2022 and 2023 (in thousands):
| December 31, 2022 |  | December 31, 2023
Contract liabilities, net of current portion | $ | 36,540 |  |  | $ | 37,188 |
Asset retirement obligations | 6,283 |  |  | 5,225 |
Other | 3,183 |  |  | 3,190 |
Other long-term liabilities | $ | 46,006 |  |  | $ | 45,603 |
Contract Liabilities In connection with its student tuition contracts, the Company has an obligation to provide free classes in the future should certain eligibility conditions be maintained. Long-term contract liabilities represent the amount of revenue under these arrangements that the Company expects will be realized after one year. Asset Retirement Obligations Certain of the Company’s lease agreements require the leased premises to be returned in a predetermined condition.

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- Definition The entire disclosure for other liabilities. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.20,24) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480566/210-10-S99-1 + Details
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