Condensed Consolidating Balance Sheet (Details) - USD ($) $ in Thousands	Sep. 30, 2016	Dec. 31, 2015	Sep. 30, 2015	Dec. 31, 2014
ASSETS
Cash and cash equivalents	$ 205,953	$ 193,441	$ 199,261	$ 214,879
Receivables, net	129,422	89,352
Other current assets	36,554	28,160
Total current assets	371,929	310,953
Property and equipment, at cost, net	86,736	88,158
Goodwill	79,799	79,327
Franchise rights and other identifiable intangibles, net	11,543	11,948
Notes receivable, net of allowances	98,450	82,572
Investments, employee benefit plans, at fair value	16,414	17,674
Investment in affiliates	0	0
Advances to affiliates	0	0
Deferred income taxes	47,002	42,434
Other assets	134,403	83,944
Total assets	846,276	717,010
Current liabilities
Accounts payable	60,363	64,431
Accrued expenses and other current liabilities	75,880	70,807
Deferred revenue	121,592	71,587
Current portion of long-term debt	660	1,191
Total current liabilities	258,495	208,016
Long-term debt	866,247	812,945
Deferred compensation and retirement plan obligations	20,890	22,859
Advances from affiliates	0	0
Other liabilities	38,086	69,089
Total liabilities	1,183,718	1,112,909
Total shareholders’ (deficit) equity	(337,442)	(395,899)
Total liabilities and shareholders’ deficit	846,276	717,010
Parent
ASSETS
Cash and cash equivalents	18,530	13,529	19,177	25,290
Receivables, net	117,373	79,381
Other current assets	8,712	19,029
Total current assets	144,615	111,939
Property and equipment, at cost, net	46,864	37,857
Goodwill	65,813	60,620
Franchise rights and other identifiable intangibles, net	4,027	2,965
Notes receivable, net of allowances	13,447	18,866
Investments, employee benefit plans, at fair value	0	0
Investment in affiliates	514,602	473,448
Advances to affiliates	8,991	17,144
Deferred income taxes	35,485	10,664
Other assets	15,285	319
Total assets	849,129	733,822
Current liabilities
Accounts payable	21,041	12,359
Accrued expenses and other current liabilities	46,091	29,099
Deferred revenue	120,536	8,749
Current portion of long-term debt	0	0
Total current liabilities	187,668	50,207
Long-term debt	853,152	799,212
Deferred compensation and retirement plan obligations	0	0
Advances from affiliates	132,597	235,629
Other liabilities	13,154	44,673
Total liabilities	1,186,571	1,129,721
Total shareholders’ (deficit) equity	(337,442)	(395,899)
Total liabilities and shareholders’ deficit	849,129	733,822
Guarantor Subsidiaries
ASSETS
Cash and cash equivalents	589	19	27	25
Receivables, net	1,635	1,132
Other current assets	33,814	14,176
Total current assets	36,038	15,327
Property and equipment, at cost, net	23,925	33,575
Goodwill	0	5,193
Franchise rights and other identifiable intangibles, net	0	1,013
Notes receivable, net of allowances	42,031	38,957
Investments, employee benefit plans, at fair value	16,414	17,674
Investment in affiliates	50,701	37,182
Advances to affiliates	123,089	212,773
Deferred income taxes	13,056	33,936
Other assets	66,306	45,383
Total assets	371,560	441,013
Current liabilities
Accounts payable	35,440	48,238
Accrued expenses and other current liabilities	35,938	45,601
Deferred revenue	45	61,890
Current portion of long-term debt	0	430
Total current liabilities	71,423	156,159
Long-term debt	3,712	3,712
Deferred compensation and retirement plan obligations	20,880	22,849
Advances from affiliates	1,294	257
Other liabilities	14,981	15,755
Total liabilities	112,290	198,732
Total shareholders’ (deficit) equity	259,270	242,281
Total liabilities and shareholders’ deficit	371,560	441,013
Non-Guarantor Subsidiaries
ASSETS
Cash and cash equivalents	186,834	179,893	180,057	189,564
Receivables, net	10,564	8,992
Other current assets	3,868	5,331
Total current assets	201,266	194,216
Property and equipment, at cost, net	15,947	16,726
Goodwill	13,986	13,514
Franchise rights and other identifiable intangibles, net	7,516	7,970
Notes receivable, net of allowances	42,972	24,749
Investments, employee benefit plans, at fair value	0	0
Investment in affiliates	0	0
Advances to affiliates	9,863	7,789
Deferred income taxes	0	0
Other assets	52,838	38,348
Total assets	344,388	303,312
Current liabilities
Accounts payable	4,032	3,987
Accrued expenses and other current liabilities	3,586	6,378
Deferred revenue	1,116	1,053
Current portion of long-term debt	660	761
Total current liabilities	9,394	12,179
Long-term debt	9,383	10,021
Deferred compensation and retirement plan obligations	10	10
Advances from affiliates	8,052	1,820
Other liabilities	11,516	10,933
Total liabilities	38,355	34,963
Total shareholders’ (deficit) equity	306,033	268,349
Total liabilities and shareholders’ deficit	344,388	303,312
Eliminations
ASSETS
Cash and cash equivalents	0	0	$ 0	$ 0
Receivables, net	(150)	(153)
Other current assets	(9,840)	(10,376)
Total current assets	(9,990)	(10,529)
Property and equipment, at cost, net	0	0
Goodwill	0	0
Franchise rights and other identifiable intangibles, net	0	0
Notes receivable, net of allowances	0	0
Investments, employee benefit plans, at fair value	0	0
Investment in affiliates	(565,303)	(510,630)
Advances to affiliates	(141,943)	(237,706)
Deferred income taxes	(1,539)	(2,166)
Other assets	(26)	(106)
Total assets	(718,801)	(761,137)
Current liabilities
Accounts payable	(150)	(153)
Accrued expenses and other current liabilities	(9,735)	(10,271)
Deferred revenue	(105)	(105)
Current portion of long-term debt	0	0
Total current liabilities	(9,990)	(10,529)
Long-term debt	0	0
Deferred compensation and retirement plan obligations	0	0
Advances from affiliates	(141,943)	(237,706)
Other liabilities	(1,565)	(2,272)
Total liabilities	(153,498)	(250,507)
Total shareholders’ (deficit) equity	(565,303)	(510,630)
Total liabilities and shareholders’ deficit	$ (718,801)	$ (761,137)