Consolidated Statements of Cash Flows - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Statement of Cash Flows [Abstract]
Net income (loss)	$ 19,749	$ (14,617)	$ 67,235
Income (loss) from discontinued operations, net of tax	(36,328)	(2,595)	7,313
Income (loss) from continuing operations, net of tax	56,077	(12,022)	59,922
Adjustments to reconcile net income (loss) from continuing operations to net cash flows from operating activities:
Depreciation and amortization	63,987	56,343	55,204
Impairment of goodwill and intangible assets	0	35,732	0
Impairment of programming assets	8,920	0	0
Loss (gain) on disposition of investments	251	(6,106)	0
(Gains) losses on sale of property and equipment	1,255	169	480
Programming assets and liabilities	(12,788)	(9,172)	(2,327)
Deferred income taxes	19,354	(16,084)	38,794
Stock and deferred compensation plans	10,741	15,872	10,857
Pension expense, net of contributions	(4,052)	(6,738)	4,936
Other changes in certain working capital accounts, net	(16,159)	(22,190)	(33,646)
Miscellaneous, net	2,645	(5,619)	1,677
Net cash provided by operating activities from continuing operations	130,231	30,185	135,897
Net cash provided by operating activities from discontinued operations	10,680	10,667	10,596
Net operating activities	140,911	40,852	146,493
Cash Flows from Investing Activities:
Acquisitions, net of cash acquired	(149,469)	(280,940)	(43,500)
Additions to property and equipment	(53,253)	(17,932)	(25,911)
Acquisition of intangible assets	(7,229)	(9,745)	0
Purchase of investments	(558)	(836)	(2,128)
Proceeds from FCC repack	1,530	0	0
Miscellaneous, net	2,307	12,886	147
Net cash used in investing activities from continuing operations	(206,672)	(296,567)	(71,392)
Net cash provided by (used in) investing activities from discontinued operations	79,188	(2,500)	(2,036)
Net investing activities	(127,484)	(299,067)	(73,428)
Cash Flows from Financing Activities:
Proceeds from issuance of long-term debt	0	700,000	0
Payments on long-term debt	(5,656)	(393,927)	(6,635)
Deferred financing costs	0	(9,671)	0
Dividends paid	(16,395)	0	0
Repurchase of Class A Common shares	(32,323)	(17,885)	(44,401)
Proceeds from exercise of stock options	1,857	1,461	4,641
Tax payments related to shares withheld for vested stock and RSUs	(3,796)	(4,576)	(2,681)
Miscellaneous, net	1,316	(2,840)	(4,258)
Net cash provided by (used in) financing activities from continuing operations	(54,997)	272,562	(53,334)
Effect of foreign exchange rates on cash, cash equivalents and restricted cash	(15)	0	0
Increase (decrease) in cash, cash equivalents and restricted cash	(41,585)	14,347	19,731
Cash, cash equivalents and restricted cash:
Beginning of year	148,699	134,352	114,621
End of year	107,114	148,699	134,352
Interest paid	33,673	18,956	15,620
Income taxes paid	3,729	1,756	1,100
Capital expenditures included in accounts payable	$ 693	$ 286	$ 102