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Subsequent Event (Notes)	3 Months Ended
Subsequent Event (Notes)	Mar. 31, 2017
Subsequent Events [Abstract]
Subsequent Events [Text Block]	Subsequent Event Effective April 1, 2017, we acquired the business and certain assets of Emantras, a digital education company with offices in Fremont, California and Chennai, India. For further details see Note 5 to the Condensed Consolidated Financial Statements.