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Leases (Details) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2024 USD ($) lease item | Dec. 31, 2023 USD ($) | Dec. 31, 2022 USD ($)
Leases |  |  |
Option to renew operating leases | false |  |
Operating lease costs | $ 16,694 | $ 13,496 | $ 10,666
Number of off-campus classroom and laboratory sites | item | 4 |  |
Weighted-average remaining lease term | 7 years 7 months 13 days |  |
Weighted-average discount rate of operating leases | 4.22% |  |
Operating lease payments | $ 14,895 | $ 11,391 | $ 9,537
Number of financing leases | lease | 0 |  |
Operating lease commitments not yet commenced |  |  |
Leases |  |  |
Non-cancelable operating lease commitments not yet commenced | $ 17,029 |  |
Minimum |  |  |
Leases |  |  |
Term of operating leases | 1 month |  |
Maximum |  |  |
Leases |  |  |
Term of operating leases | 10 years 4 months |  |

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