Consolidated Statements of Operations - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Income Statement [Abstract]
Net revenue	$ 258,514	$ 254,134	$ 242,038
Expenses:
Cost of revenue - digital media	9,536	7,242	2,993
Direct operating expenses (including related parties of $10,302, $9,306, and $10,655) (including non-cash stock-based compensation of $1,330, $1,931, and $1,294)	113,439	110,323	104,874
Selling, general and administrative expenses	46,798	42,815	37,806
Corporate expenses (including non-cash stock-based compensation of $3,705, $3,309, and $3,057)	24,543	22,520	21,301
Depreciation and amortization (includes direct operating of $9,206, $10,326, and $10,037; selling, general and administrative of $4,735, $4,219, and $3,847; and corporate of $1,401, $1,444, and $779) (including related parties of $2,320, $2,321, and $2,320)	15,342	15,989	14,663
Impairment charge			735
Total expenses	209,658	198,889	182,372
Operating income	48,856	55,245	59,666
Interest expense	(15,469)	(13,047)	(13,904)
Interest income	300	45	50
Loss on debt extinguishment	(161)	(204)	(246)
Income (loss) before income taxes	33,526	42,039	45,566
Income tax (expense) benefit	(13,121)	(16,414)	(18,444)
Net income	$ 20,405	$ 25,625	$ 27,122
Basic and diluted earnings per share:
Net income per share, basic	$ 0.23	$ 0.29	$ 0.31
Net income per share, diluted	0.22	0.28	0.30
Cash dividends declared per common share, basic	0.13	0.11	0.10
Cash dividends declared per common share, diluted	$ 0.12	$ 0.10	$ 0.10
Weighted average common shares outstanding, basic	89,340,589	87,920,230	88,680,322
Weighted average common shares outstanding, diluted	91,303,056	90,295,185	90,943,734