Goodwill and Other Intangible Assets - Narrative (Details) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Sep. 30, 2015	Dec. 31, 2015	Dec. 31, 2016
Goodwill [Line Items]
2015 Impairment charge		$ 22,500
Estimated amortization expense of intangible assets for 2017			$ 22,000
Estimated amortization expense of intangible assets for 2018			21,500
Estimated amortization expense of intangible assets for 2019			20,000
Estimated amortization expense of intangible assets for 2020			18,500
Estimated amortization expense of intangible assets for 2021			16,200
Estimated amortization expense of intangible assets for later years			$ 165,900
Second small business
Goodwill [Line Items]
2015 Impairment charge		$ 1,500
2014 Newsy acquisition
Goodwill [Line Items]
2015 Impairment charge	$ 21,000
Impairment of Intangible Assets (Excluding Goodwill)	$ 2,900