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Acquisition (Details) (USD $)			0 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 27, 2011 Certain assets of Jack Welch Management Institute [Member]	Dec. 31, 2013 Certain assets of Jack Welch Management Institute [Member]
Business Acquisition [Line Items]
Purchase price paid for acquisition of certain assets of the Jack Welch Management Institute			$ 7,000,000
Cash received form Mr. Welch representing his economic interest in JWMI			2,800,000
Deferred payments to the sellers				2,100,000
Value of acquired course content			800,000
Estimated useful life of course content			5 years
Acquired indefinite-lived intangible assets			1,600,000
Goodwill	$ 6,800,000	$ 6,800,000	$ 6,800,000

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