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Acquisition of Torrens University and Associated Assets in Australia and New Zealand - Valuation Methodology (Details) - USD ($) $ in Thousands |  | 9 Months Ended
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Nov. 03, 2020 | Sep. 30, 2021
Business Acquisition [Line Items] |  |
Weighted Average Useful Life in Years |  | 3 years
Torrens University and Related Assets in Australia and New Zealand (ANZ) |  |
Business Acquisition [Line Items] |  |
Property and equipment, net | $ 41,508 |
Torrens University and Related Assets in Australia and New Zealand (ANZ) | Relief From Royalty Approach Valuation Technique | Course Content |  |
Business Acquisition [Line Items] |  |
Property and equipment, net | $ 10,000 |
Torrens University and Related Assets in Australia and New Zealand (ANZ) | Relief From Royalty Approach Valuation Technique | Measurement Input, Long-term Revenue Growth Rate | Course Content | Minimum |  |
Business Acquisition [Line Items] |  |
Property, plant and equipment, measurement input | 5.60% |
Torrens University and Related Assets in Australia and New Zealand (ANZ) | Relief From Royalty Approach Valuation Technique | Measurement Input, Long-term Revenue Growth Rate | Course Content | Maximum |  |
Business Acquisition [Line Items] |  |
Property, plant and equipment, measurement input | 6.20% |
Torrens University and Related Assets in Australia and New Zealand (ANZ) | Relief From Royalty Approach Valuation Technique | Measurement Input, Long-term Revenue Growth Rate | Trade names | Minimum |  |
Business Acquisition [Line Items] |  |
Indefinite-lived intangible asset, measurement input | 2.50% |
Torrens University and Related Assets in Australia and New Zealand (ANZ) | Relief From Royalty Approach Valuation Technique | Measurement Input, Long-term Revenue Growth Rate | Trade names | Maximum |  |
Business Acquisition [Line Items] |  |
Indefinite-lived intangible asset, measurement input | 6.30% |
Torrens University and Related Assets in Australia and New Zealand (ANZ) | Relief From Royalty Approach Valuation Technique | Measurement Input, Royalty Rate | Course Content |  |
Business Acquisition [Line Items] |  |
Property, plant and equipment, measurement input | 3.00% |
Torrens University and Related Assets in Australia and New Zealand (ANZ) | Relief From Royalty Approach Valuation Technique | Measurement Input, Royalty Rate | Trade names |  |
Business Acquisition [Line Items] |  |
Indefinite-lived intangible asset, measurement input | 2.50% |
Torrens University and Related Assets in Australia and New Zealand (ANZ) | Relief From Royalty Approach Valuation Technique | Measurement Input, Discount Rate | Course Content |  |
Business Acquisition [Line Items] |  |
Property, plant and equipment, measurement input | 11.00% |
Torrens University and Related Assets in Australia and New Zealand (ANZ) | Relief From Royalty Approach Valuation Technique | Measurement Input, Discount Rate | Trade names |  |
Business Acquisition [Line Items] |  |
Indefinite-lived intangible asset, measurement input | 11.00% |
Torrens University and Related Assets in Australia and New Zealand (ANZ) | Valuation, Cost Approach |  |
Business Acquisition [Line Items] |  |
Contract liabilities fair value, percentage of carrying value | 70.00% |
Student relationships | Torrens University and Related Assets in Australia and New Zealand (ANZ) |  |
Business Acquisition [Line Items] |  |
Weighted Average Useful Life in Years | 3 years |
Student relationships | Torrens University and Related Assets in Australia and New Zealand (ANZ) | Relief From Royalty Approach Valuation Technique | Course Content |  |
Business Acquisition [Line Items] |  |
Weighted Average Useful Life in Years | 3 years |
Student relationships | Torrens University and Related Assets in Australia and New Zealand (ANZ) | Valuation Technique, Excess Earnings Method | Measurement Input, Discount Rate |  |
Business Acquisition [Line Items] |  |
Finite-lived intangible asset, measurement input | 11.00% |
Student relationships | Torrens University and Related Assets in Australia and New Zealand (ANZ) | Valuation Technique, Excess Earnings Method | Measurement Input, Annual Attrition Rate |  |
Business Acquisition [Line Items] |  |
Finite-lived intangible asset, measurement input | 60.00% |

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