Acquisitions, Dispositions, Exchanges and Other (Dispositions) (Narrative) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		1 Months Ended	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014	Jan. 31, 2015 school	Sep. 30, 2014 school	Feb. 12, 2015 campus
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Estimated loss on sale of KHE Campuses	$ 0	$ 0
KHE Campuses [Member] | Higher Education [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Number of nationally accredited ground campuses					38
Kaplan China [Member] | Kaplan International [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Number of schools sold			1	3