Discontinued Operations (Details 2) - USD ($) $ in Thousands			3 Months Ended	12 Months Ended
		May 09, 2017	Jun. 30, 2015	Dec. 31, 2017		Dec. 31, 2016		Dec. 31, 2015
Cash paid during the period
Interest				$ 850		$ 636		$ 718
Income taxes				2,420		6,555		4,192
Significant operating non-cash items
Depreciation and amortization				6,251		5,876		5,425
Significant investing items
Acquisition of property and equipment				6,246		3,967		3,570
Proceeds from insurance claim			$ (777)
Joplin, Missouri and Victoria, Texas Television Stations [Member]
Cash paid during the period
Interest				21		32		33
Income taxes				23,260		2,677		1,972
Significant operating non-cash items
Depreciation and amortization	[1]			445		1,387		1,399
Broadcast program rights amortization				418		628		637
Barter revenue, net				18		32		(50)
Acquisition of property and equipment				0		43		3
Loss (gain) on sale of assets				31		(42)		32
Pretax gain on television sale				50,842		0		0
Significant investing items
Acquisition of property and equipment				335		894		1,973
Proceeds from sale and disposal of assets				0		(59)		(3)
Net proceeds from sale of television stations		$ 69,500		69,528	[2]	0	[2]	0	[2]
Proceeds from insurance claim				$ 0		$ 0		$ (777)

[1] No depreciation expense was recorded by the Company beginning May 9, 2017, the date the Television segment assets’ were held for sale.

[2] Net proceeds from the sale of the television stations reflect the sales price of $66.6 million, the sale of accounts receivable of approximately $3.4 million, offset by certain closing adjustments and transactional costs of approximately $500 thousand.