Consolidated Statements of Cash Flows - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Cash flows from operating activities:
Net income (loss)	$ (19,712)	$ 12,161	$ 175,698
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	16,648	16,273	16,411
Cost of revenue - television (spectrum usage rights)			12,340
Impairment charge	32,097
Impairment loss on investment		1,320
Deferred income taxes	5,311	4,612	81,766
Non-cash interest	881	1,124	3,237
Amortization of syndication contracts	505	651	452
Payments on syndication contracts	(543)	(643)	(445)
Equity in net (income) loss of nonconsolidated affiliate	234	1,374	310
Non-cash stock-based compensation	4,377	5,787	6,091
(Gain) loss on disposal of property and equipment	158		28
(Gain) loss on debt extinguishment	255	550	3,306
Changes in assets and liabilities:
(Increase) decrease in trade receivables, net	8,610	5,895	414
(Increase) decrease in prepaid expenses and other current assets	2,102	(5,581)	(913)
Increase (decrease) in accounts payable, accrued expenses and other liabilities	(19,384)	(9,727)	2,825
Net cash provided by operating activities	31,539	33,796	301,520
Cash flows from investing activities:
Proceeds from sale of property and equipment and intangibles		33	50
Purchases of property and equipment	(25,283)	(17,006)	(12,078)
Purchases of intangibles	(2,300)	(3,153)	(32,588)
Purchase of a businesses, net of cash acquired		(3,522)	(29,149)
Purchases of marketable securities	(1,400)	(159,403)
Proceeds from marketable securities	43,647	25,000
Purchases of investments	(300)	(1,495)	(2,450)
Deposits on acquisition			(190)
Net cash provided by (used in) investing activities	14,364	(159,546)	(76,405)
Cash flows from financing activities:
Proceeds from stock option exercises		249	708
Tax payments related to shares withheld for share-based compensation plans	(1,688)	(2,268)	(798)
Payments on long-term debt	(28,000)	(53,000)	(293,563)
Dividends paid	(16,962)	(17,782)	(14,670)
Repurchase of Class A common stock	(12,565)	(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	(225)		(3,382)
Net cash used in financing activities	(59,440)	(88,628)	(24,795)
Effect of exchange rates on cash, cash equivalents and restricted cash	(71)	(11)	14
Net increase (decrease) in cash, cash equivalents and restricted cash	(13,608)	(214,389)	200,334
Cash, cash equivalents and restricted cash:
Beginning	47,465	261,854	61,520
Ending	33,857	47,465	261,854
Cash payments for:
Interest	12,802	14,619	13,472
Income taxes	2,847	3,265	846
Supplemental disclosures of non-cash investing and financing activities:
Capital expenditures financed through accounts payable, accrued expenses and other liabilities	730	660	1,678
Contingent consideration included in accounts payable, accrued expenses and other liabilities	$ 1,641	$ 8,119	$ 12,107