Commitments and Contingent Liabilities (Broadcast Rights) (Details) $ in Thousands	Jun. 30, 2017 USD ($)
Unavailable broadcast rights
Fair value of unavailable broadcast rights	$ 20,900
Broadcast Rights [Member]
Recorded broadcast rights commitments
Broadcast rights payments due: 2018	9,206
Broadcast rights payments due: 2019	10,519
Broadcast rights payments due: 2020	3,723
Broadcast rights payments due: 2021	3,375
Broadcast rights payments due: 2022	2,520
Broadcast rights payments due: Thereafter	2,317
Total amounts payable	31,660
Unavailable broadcast rights
Unavailable broadcast rights payments due: 2018	11,385
Unavailable broadcast rights payments due: 2019	6,232
Unavailable broadcast rights payments due: 2020	3,578
Unavailable broadcast rights payments due: 2021	549
Unavailable broadcast rights payments due: 2022	0
Unavailable broadcast rights payments due: Thereafter	0
Unavailable broadcast rights	$ 21,744