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Due to Shareholders of Acquired Companies - Summary of Amounts Due to Shareholders of Acquired Companies (Details) R$ in Thousands, $ in Thousands | 12 Months Ended |  |  |  |
--- | --- | --- | --- | --- | ---
Dec. 31, 2017 USD ($) | Dec. 31, 2016 USD ($) | Dec. 31, 2015 USD ($) | Sep. 12, 2014 BRL (R$) | Nov. 21, 2013 USD ($)
Business Acquisition [Line Items] |  |  |  |  |
Total due to shareholders of acquired companies | $ 79,569 | $ 210,948 |  |  |
Less: Current portion of due to shareholders of acquired companies | 40,140 | 118,679 |  |  |
Due to shareholders of acquired companies, less current portion | 39,429 | 92,269 |  |  |
Universidade Anhembi Morumbi (UAM Brazil) |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |
Total due to shareholders of acquired companies |  | 52,043 |  |  |
Universidade Anhembi Morumbi (UAM Brazil) | Related Party Notes Payable |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |
Total due to shareholders of acquired companies | $ 45,206 |  |  |  |
Universidade Anhembi Morumbi (UAM Brazil) | Certificados de Depósitos Interbancários (CDI) | Related Party Notes Payable |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |
Basis spread on variable rate | 2.00% |  |  |  |
University of St. Augustine for Health Sciences, LLC (St. Augustine) |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |
Total due to shareholders of acquired companies | $ 11,550 | 11,550 | $ 11,550 |  | $ 14,000
University of St. Augustine for Health Sciences, LLC (St. Augustine) | Related Party Notes Payable |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |
Interest Rate % | 7.00% |  |  |  | 7.00%
Monash South Africa (MSA) |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |
Total due to shareholders of acquired companies | $ 9,571 | 27,462 |  |  |
Monash South Africa (MSA) | Related Party Notes Payable |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |
Interest Rate % | 6.75% |  |  |  |
CH Holding Netherlands B.V. (CH Holding) |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |
Total due to shareholders of acquired companies | $ 3,971 | 8,587 |  |  |
Universidad Tecnologica Centroamericana (UNITEC Honduras) |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |
Total due to shareholders of acquired companies | 3,813 | 5,196 |  |  |
Faculdade Porto-Alegrense (FAPA) |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |
Total due to shareholders of acquired companies | 3,084 | 2,973 |  |  |
IADE Group |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |
Total due to shareholders of acquired companies | $ 2,374 | 2,755 |  |  |
IADE Group | Related Party Notes Payable |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |
Interest Rate % | 3.00% |  |  |  |
Faculdades Metropolitanas Unidas Educacionais (FMU) |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |
Total due to shareholders of acquired companies | $ 0 | $ 100,382 |  | R$ 250,000 |

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