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Intangible Assets - Amortization Expense for Developed Curricula and Student Relationships (Details)
$ in Thousands
Dec. 31, 2019
USD ($)
Amortization expense  
2020 $ 8,419
2021 8,419
2022 8,419
2023 8,419
2024 8,419
Thereafter 159,962
Net Carrying Amount $ 202,057