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Subsequent Events (Details) - USD ($) | Oct. 14, 2019 | Oct. 08, 2019 | Oct. 07, 2019 | Nov. 01, 2019 | Oct. 06, 2019 | Aug. 08, 2019
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Common Class A |  |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |  |
Amount authorized to be repurchased |  |  |  |  |  | $ 150,000,000
Subsequent Event | Disposal Group, Disposed of by Sale, Not Discontinued Operations | Sodecam - Sociedade De Desenvolvimento Cultural Do Amazonas Ltda |  |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |  |
Consideration received from dispositions |  |  |  | $ 46,000,000 |  |
Subsequent Event | Universidad U Latina, SRL and Education Holding Costa Rica EHCR, SRL | Discontinued Operations, Disposed of by Sale | UIP. Excelencia y Superacion S.A. (EXUSA) |  |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |  |
Percent of ownership disposed of |  | 100.00% |  |  |  |
Consideration received from dispositions |  | $ 86,750,000 |  |  |  |
Net proceeds from dispositions |  | $ 80,000,000 |  |  |  |
Subsequent Event | Revolving Credit Facility |  |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |  |
Percentage of utilized line of credit (less than) |  |  | 25.00% |  |  |
Subsequent Event | Lines of credit |  |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |  |
Maximum debt to consolidated EBITDA ratio |  |  | 4.75 |  |  |
Subsequent Event | Lines of credit | Revolving Credit Facility |  |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |  |
Maximum borrowing capacity under credit facility |  |  | $ 410,000,000 |  | $ 385,000,000 |
Subsequent Event | Commencing with the quarter ending December 31, 2019 | Lines of credit | Revolving Credit Facility |  |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |  |
Required minimum debt to consolidated EBITDA ratio |  |  | 3.50 |  |  |
Subsequent Event | London Interbank Offered Rate (LIBOR) | Debt Covenant, Term 1 | Lines of credit | Revolving Credit Facility |  |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |  |
Basis spread on variable rate |  |  | 2.50% |  |  |
Subsequent Event | London Interbank Offered Rate (LIBOR) | Debt Covenant Term 2 | Lines of credit | Revolving Credit Facility |  |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |  |
Basis spread on variable rate |  |  | 2.25% |  |  |
Subsequent Event | London Interbank Offered Rate (LIBOR) | Debt Covenant Term 3 | Lines of credit | Revolving Credit Facility |  |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |  |
Basis spread on variable rate |  |  | 2.00% |  |  |
Subsequent Event | London Interbank Offered Rate (LIBOR) | Debt Covenant Term 4 | Lines of credit | Revolving Credit Facility |  |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |  |
Basis spread on variable rate |  |  | 1.75% |  |  |
Subsequent Event | Alternate Base Rate | Debt Covenant, Term 1 | Lines of credit | Revolving Credit Facility |  |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |  |
Basis spread on variable rate |  |  | 1.50% |  |  |
Subsequent Event | Alternate Base Rate | Debt Covenant Term 2 | Lines of credit | Revolving Credit Facility |  |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |  |
Basis spread on variable rate |  |  | 1.25% |  |  |
Subsequent Event | Alternate Base Rate | Debt Covenant Term 3 | Lines of credit | Revolving Credit Facility |  |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |  |
Basis spread on variable rate |  |  | 1.00% |  |  |
Subsequent Event | Alternate Base Rate | Debt Covenant Term 4 | Lines of credit | Revolving Credit Facility |  |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |  |
Basis spread on variable rate |  |  | 0.75% |  |  |
Subsequent Event | Common Class A |  |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |  |
Stock repurchase program, period increase | $ 150,000,000 |  |  |  |  |
Amount authorized to be repurchased | $ 300,000,000 |  |  |  |  |

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