Subsequent Events (Details) - USD ($)	Oct. 14, 2019	Oct. 08, 2019	Oct. 07, 2019	Nov. 01, 2019	Oct. 06, 2019	Aug. 08, 2019
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