Estimated Amortization Expense for Amortized Intangible Assets (Detail) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2012
Intangible Assets [Line Items]
Estimated amortization expense, 2013	$ 8,746
Estimated amortization expense, 2014	5,861
Estimated amortization expense, 2015	2,179
Estimated amortization expense, 2016	1,557
Estimated amortization expense, 2017	1,106
American University Of Caribbean
Intangible Assets [Line Items]
Estimated amortization expense, 2013	4,973
Estimated amortization expense, 2014	3,347
Estimated amortization expense, 2015	387
Becker
Intangible Assets [Line Items]
Estimated amortization expense, 2013	1,041
Estimated amortization expense, 2014	916
Estimated amortization expense, 2015	907
Estimated amortization expense, 2016	874
Estimated amortization expense, 2017	616
DeVry Brasil
Intangible Assets [Line Items]
Estimated amortization expense, 2013	2,312
Estimated amortization expense, 2014	1,303
Estimated amortization expense, 2015	625
Estimated amortization expense, 2016	423
Estimated amortization expense, 2017	230
Carrington Colleges Group Inc
Intangible Assets [Line Items]
Estimated amortization expense, 2013	420
Estimated amortization expense, 2014	295
Estimated amortization expense, 2015	260
Estimated amortization expense, 2016	260
Estimated amortization expense, 2017	$ 260