Acquisitions (Summary of Acquired Intangible Assets by Acquisition) (Details) $ in Thousands	12 Months Ended
	Jun. 30, 2017 USD ($)
Peachtree TV and FY 2017 Acquisition [Member]
Finite-Lived and Indefinite-Lived Intangible Assets Acquired as Part of Business Combination [Line Items]
Intangible assets subject to amortization	$ 15,951
Intangible assets, net	66,428
Peachtree TV and FY 2017 Acquisition [Member] | Customer lists [Member]
Finite-Lived and Indefinite-Lived Intangible Assets Acquired as Part of Business Combination [Line Items]
Intangible assets subject to amortization	4,200
Peachtree TV and FY 2017 Acquisition [Member] | Other intangible assets [Member]
Finite-Lived and Indefinite-Lived Intangible Assets Acquired as Part of Business Combination [Line Items]
Intangible assets subject to amortization	5,057
Peachtree TV and FY 2017 Acquisition [Member] | Retransmission agreements [Member]
Finite-Lived and Indefinite-Lived Intangible Assets Acquired as Part of Business Combination [Line Items]
Intangible assets subject to amortization	6,694
Peachtree TV and FY 2017 Acquisition [Member] | FCC licenses [Member]
Finite-Lived and Indefinite-Lived Intangible Assets Acquired as Part of Business Combination [Line Items]
Intangible assets not subject to amortization	$ 50,477
National media [Member] | Customer lists [Member]
Finite-Lived and Indefinite-Lived Intangible Assets Acquired as Part of Business Combination [Line Items]
Useful life of acquired intangible assets	10 years
National media [Member] | Other intangible assets [Member]
Finite-Lived and Indefinite-Lived Intangible Assets Acquired as Part of Business Combination [Line Items]
Useful life of acquired intangible assets	5 years
National media [Member] | FY 2017 Acquisition [Member]
Finite-Lived and Indefinite-Lived Intangible Assets Acquired as Part of Business Combination [Line Items]
Intangible assets subject to amortization	$ 8,600
Intangible assets, net	8,600
National media [Member] | FY 2017 Acquisition [Member] | Customer lists [Member]
Finite-Lived and Indefinite-Lived Intangible Assets Acquired as Part of Business Combination [Line Items]
Intangible assets subject to amortization	4,200
National media [Member] | FY 2017 Acquisition [Member] | Other intangible assets [Member]
Finite-Lived and Indefinite-Lived Intangible Assets Acquired as Part of Business Combination [Line Items]
Intangible assets subject to amortization	4,400
National media [Member] | FY 2017 Acquisition [Member] | Retransmission agreements [Member]
Finite-Lived and Indefinite-Lived Intangible Assets Acquired as Part of Business Combination [Line Items]
Intangible assets subject to amortization	0
National media [Member] | FY 2017 Acquisition [Member] | FCC licenses [Member]
Finite-Lived and Indefinite-Lived Intangible Assets Acquired as Part of Business Combination [Line Items]
Intangible assets not subject to amortization	$ 0
Local media [Member] | Other intangible assets [Member]
Finite-Lived and Indefinite-Lived Intangible Assets Acquired as Part of Business Combination [Line Items]
Useful life of acquired intangible assets	4 years
Local media [Member] | Retransmission agreements [Member]
Finite-Lived and Indefinite-Lived Intangible Assets Acquired as Part of Business Combination [Line Items]
Useful life of acquired intangible assets	10 years
Local media [Member] | Peachtree TV [Member]
Finite-Lived and Indefinite-Lived Intangible Assets Acquired as Part of Business Combination [Line Items]
Intangible assets subject to amortization	$ 7,351
Intangible assets, net	57,828
Local media [Member] | Peachtree TV [Member] | Customer lists [Member]
Finite-Lived and Indefinite-Lived Intangible Assets Acquired as Part of Business Combination [Line Items]
Intangible assets subject to amortization	0
Local media [Member] | Peachtree TV [Member] | Other intangible assets [Member]
Finite-Lived and Indefinite-Lived Intangible Assets Acquired as Part of Business Combination [Line Items]
Intangible assets subject to amortization	657
Local media [Member] | Peachtree TV [Member] | Retransmission agreements [Member]
Finite-Lived and Indefinite-Lived Intangible Assets Acquired as Part of Business Combination [Line Items]
Intangible assets subject to amortization	6,694
Local media [Member] | Peachtree TV [Member] | FCC licenses [Member]
Finite-Lived and Indefinite-Lived Intangible Assets Acquired as Part of Business Combination [Line Items]
Intangible assets not subject to amortization	$ 50,477