Consolidated Statements of Cash Flows - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Cash flows from operating activities:
Net income	$ 12,161	$ 175,698	$ 20,405
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	16,273	16,411	15,342
Cost of revenue - television (spectrum usage rights)		12,340
Impairment loss on investment	1,320
Deferred income taxes	4,612	81,766	12,528
Non-cash interest	1,124	3,237	776
Amortization of syndication contracts	651	452	398
Payments on syndication contracts	(643)	(445)	(388)
Equity in net (income) loss of nonconsolidated affiliate	1,374	310
Non-cash stock-based compensation	5,787	6,091	5,035
(Gain) loss on sale of property		28
(Gain) loss on debt extinguishment	550	3,306	161
Changes in assets and liabilities:
(Increase) decrease in trade receivables, net	5,895	414	1,397
(Increase) decrease in prepaid expenses and other current assets	(5,581)	(913)	439
Increase (decrease) in accounts payable, accrued expenses and other liabilities	(9,727)	2,825	1,203
Net cash provided by operating activities	33,796	301,520	57,296
Cash flows from investing activities:
Proceeds from sale of property and equipment and intangibles	33	50
Purchases of property and equipment	(17,006)	(12,078)	(9,053)
Purchases of intangibles	(3,153)	(32,588)
Purchase of a businesses, net of cash acquired	(3,522)	(29,149)
Purchases of marketable securities	(159,403)
Proceeds from marketable securities	25,000
Purchases of short term investments: CDs			(30,000)
Proceeds from short term investments: CDs			30,000
Purchases of investments	(1,495)	(2,450)	(500)
Deposits on acquisition		(190)
Net cash used in investing activities	(159,546)	(76,405)	(9,553)
Cash flows from financing activities:
Proceeds from stock option exercises	249	708	780
Tax payments related to shares withheld for share-based compensation plans	(2,268)	(798)
Payments on long-term debt	(53,000)	(293,563)	(23,750)
Dividends paid	(17,782)	(14,670)	(11,177)
Repurchase of Class A common stock	(13,812)	(5,330)
Payment of contingent consideration	(2,015)	(3,819)
Termination of swap agreements		(2,441)
Proceeds from borrowings on long-term debt		298,500
Payments of capitalized debt offering and issuance costs		(3,382)
Net cash used in financing activities	(88,628)	(24,795)	(34,147)
Effect of exchange rates on cash, cash equivalents and restricted cash	(11)	14
Net increase (decrease) in cash, cash equivalents and restricted cash	(214,389)	200,334	13,596
Cash, cash equivalents and restricted cash:
Beginning	261,854	61,520	47,924
Ending	47,465	261,854	61,520
Cash payments for:
Interest	14,619	13,472	14,693
Income taxes	3,265	846	593
Supplemental disclosures of non-cash investing and financing activities:
Capital expenditures financed through accounts payable, accrued expenses and other liabilities	660	1,678	$ 1,068
Contingent consideration included in accounts payable, accrued expenses and other liabilities	$ 8,119	$ 12,107