Changes in Operations and Non-operating Items Severance by Business Segment (Details) - Employee Severance - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 28, 2014
Restructuring Cost and Reserve [Line Items]
Severance Costs	$ 10,406	$ 5,276	$ 2,634
Corporate, Non-Segment
Restructuring Cost and Reserve [Line Items]
Severance Costs	1,178	2,959	536
Operating Segments | Television and Entertainment
Restructuring Cost and Reserve [Line Items]
Severance Costs	$ 9,228	$ 2,317	$ 2,098