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Subsequent Event	3 Months Ended
Subsequent Event	Mar. 31, 2018
Subsequent Events [Abstract]
Subsequent Event	Subsequent Event On April 20, 2018, the Company acquired a majority ownership interest in Levity Entertainment Group LLC ("Levity"), a vertically integrated media company that owns and operates comedy venues as well as produces original content for distribution on multiple platforms, including live, digital and linear, for a total purchase price of $48.5 million.