Consolidated Statements of Operations - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Net revenue:
Revenue from advertising and retransmission consent	$ 272,091	$ 258,514	$ 243,484
Revenue from spectrum usage rights	263,943		10,650
Total net revenue	536,034	258,514	254,134
Expenses:
Cost of revenue - television (spectrum usage rights)	12,340
Cost of revenue - digital media	32,206	9,536	7,242
Direct operating expenses (including related parties of $9,494, $10,302, and $9,306) (including non-cash stock-based compensation of $1,236, $1,330, and $1,931)	119,283	113,439	110,323
Selling, general and administrative expenses	49,116	46,798	42,815
Corporate expenses (including non-cash stock-based compensation of $4,855, $3,705, and $3,309)	27,937	24,543	22,520
Depreciation and amortization (includes direct operating of $8,861, $9,206, and $10,326; selling, general and administrative of $6,347, $4,735, and $4,219; and corporate of $1,203, $1,401 and $1,444) (including related parties of $2,043, $2,320, and $2,321)	16,411	15,342	15,989
Foreign currency (gain) loss	350
Total expenses	257,643	209,658	198,889
Operating income	278,391	48,856	55,245
Interest expense	(16,709)	(15,469)	(13,047)
Interest income	774	300	45
Other income (loss)	262
Gain (loss) on debt extinguishment	(3,306)	(161)	(204)
Income (loss) before income taxes	259,412	33,526	42,039
Income tax (expense) benefit	(82,809)	(13,121)	(16,414)
Income (loss) before equity in net income (loss) of	176,603	20,405	25,625
Equity in net income (loss) of nonconsolidated affiliate	(310)
Net income	$ 176,293	$ 20,405	$ 25,625
Basic and diluted earnings per share:
Net income per share, basic	$ 1.95	$ 0.23	$ 0.29
Net income per share, diluted	1.92	0.22	0.28
Cash dividends declared per common share, basic	0.16	0.13	0.11
Cash dividends declared per common share, diluted	$ 0.16	$ 0.12	$ 0.10
Weighted average common shares outstanding, basic	90,272,257	89,340,589	87,920,230
Weighted average common shares outstanding, diluted	91,891,957	91,303,056	90,295,185