Acquisitions (Details) $ in Thousands, € in Millions, BRL in Millions	1 Months Ended					3 Months Ended		9 Months Ended
	Dec. 31, 2015 USD ($)	Dec. 31, 2015 EUR (€)	Jun. 30, 2015 USD ($)	Dec. 31, 2014 USD ($)	Dec. 31, 2014 BRL	May 31, 2016 USD ($)	May 31, 2015 USD ($)	May 31, 2016 USD ($)	May 31, 2015 USD ($)	May 31, 2016 BRL	May 31, 2016 EUR (€)	Dec. 10, 2015 USD ($)	Aug. 31, 2015 USD ($)	Jun. 11, 2015 USD ($)	Dec. 04, 2014 USD ($)
Purchase price allocation [Line Items]
Fair value of contingent consideration							$ 0		$ 0
Goodwill						$ 265,765		$ 265,765					$ 247,190
Cash paid for acquisition, net of cash acquired								101,196	$ 21,166
Career Partner GmbH [Member]
Purchase price allocation [Line Items]
Initial cash payment	$ 105,000	€ 96
Contingent consideration maximum						12,300		12,300			€ 11
Fair value of contingent consideration	$ (10,700)					0		(10,717)
Purchase price reduction						3,500
Transaction costs						2,000		2,000
Property and equipment												$ 13,682
Goodwill												92,840
Other assets												2,092
Deferred revenue												28,380
Capital lease obligations												22,734
Other liabilities												(20,340)
Total assets acquired and liabilities assumed, net												112,980
Cash acquired												(4,580)
Finite-lived intangible assets, weighted average useful life	5 years	5 years
Career Partner GmbH [Member] | Trademarks [Member]
Purchase price allocation [Line Items]
Indefinite-lived intangibles												30,469
Career Partner GmbH [Member] | Accreditations [Member]
Purchase price allocation [Line Items]
Indefinite-lived intangibles												27,948
Career Partner GmbH [Member] | Student and customer relationships [Member]
Purchase price allocation [Line Items]
Finite-lived Intangibles												9,097
Finite-lived intangible asset, useful life	5 years	5 years
Career Partner GmbH [Member] | Curriculum [Member]
Purchase price allocation [Line Items]
Finite-lived Intangibles												$ 3,726
Finite-lived intangible asset, useful life	5 years	5 years
The Iron Yard [Member]
Purchase price allocation [Line Items]
Percentage of shares acquired														62.00%
Initial cash payment			$ 15,900
Tangible assets (net of acquired liabilities)														$ 5,262
Indefinite-lived intangibles														0
Finite-lived Intangibles														4,690
Goodwill														15,888
Total assets acquired and liabilities assumed, net														25,840
Fair value of redeemable noncontrolling interests														(9,900)
Total fair value of consideration transferred														15,940
Cash acquired														$ (5,401)
Cash paid for acquisition, net of cash acquired			$ 10,539
FAEL [Member]
Purchase price allocation [Line Items]
Percentage of shares acquired															75.00%
Initial cash payment				$ 28,900	BRL 73.8
Contingent consideration maximum						$ 9,500		$ 9,500		BRL 34.0
Tangible assets (net of acquired liabilities)															$ (2,807)
Indefinite-lived intangibles															15,163
Finite-lived Intangibles															5,394
Goodwill															14,538
Total assets acquired and liabilities assumed, net															32,288
Fair value of redeemable noncontrolling interests															(3,437)
Total fair value of consideration transferred															28,851
Cash acquired															$ (7,685)
Cash paid for acquisition, net of cash acquired				$ 21,166