Consolidating Financial Information of Guarantors and Issuers (Balance Sheet) (Details) - USD ($) $ in Thousands	Mar. 31, 2019	Jan. 01, 2019	Dec. 31, 2018	Mar. 25, 2018	Dec. 31, 2017
Current Assets:
Cash and cash equivalents	$ 60,272		$ 105,349	$ 42,888
Receivables	44,331		51,518	30,795
Inventories	42,629		30,753	40,303
Other current assets	38,313		12,589	39,998
Total current assets	185,545		200,209	153,984
Property and equipment (net)	1,646,754		1,599,438	1,621,099
Investment In Park	0		0	0
Goodwill	179,939		178,719	182,291	$ 183,830
Other intangibles, net	36,642		36,376	37,710
Deferred tax asset	0		0	0
Right-of-Use Asset	72,594		0	0
Other Assets	10,996		9,441	9,507
Total Assets	2,132,470		2,024,183	2,004,591
Current Liabilities:
Current maturities of long-term debt	7,500		5,625	0
Accounts payable	47,254		23,314	39,812
Deferred revenue	151,336	$ 107,100	107,074	124,513
Accrued interest	20,886		7,927	21,119
Accrued taxes	9,883		29,591	10,176
Accrued salaries, wages and benefits	13,996		18,786	14,513
Self-insurance reserves	23,579		24,021	24,811
Other accrued liabilities	19,745		18,381	18,236
Total current liabilities	294,179		234,719	253,180
Deferred Tax Liability	82,518		81,717	87,459
Derivative Liability	13,083		6,705	2,730
Lease Liability	65,399		0	0
Other Liabilities	10,314		11,058	11,403
Long-Term Debt:
Revolving credit loans	120,000		0	40,000
Term debt	718,168		719,507	723,525
Notes	938,407		938,061	937,257
Total long-term debt	1,776,575		1,657,568	1,700,782
Equity	(109,598)		32,416	(50,963)	$ 82,946
Total Liabilities and Partners' Equity	2,132,470		2,024,183	2,004,591
June 2014 Notes [Member] | Reportable Legal Entities [Member] | Parent Company [Member]
Current Assets:
Cash and cash equivalents	0		0	0
Receivables	0		0	0
Inventories	0		0	0
Other current assets	73		179	69
Total current assets	73		179	69
Property and equipment (net)	0		0	0
Investment In Park	489,463		601,706	485,489
Goodwill	674		674	674
Other intangibles, net	0		0	0
Deferred tax asset	0		0	0
Right-of-Use Asset	0
Other Assets	0		0	0
Total Assets	490,210		602,559	486,232
Current Liabilities:
Current maturities of long-term debt	0		0
Accounts payable	593,593		565,472	531,176
Deferred revenue	0		0	0
Accrued interest	4		1	215
Accrued taxes	1,111		443	883
Accrued salaries, wages and benefits	0		0	0
Self-insurance reserves	0		0	0
Other accrued liabilities	3,201		3,318	3,283
Total current liabilities	597,909		569,234	535,557
Deferred Tax Liability	0		0	0
Derivative Liability	1,899		909	1,638
Lease Liability	0
Other Liabilities	0		0	0
Long-Term Debt:
Revolving credit loans	0			0
Term debt	0		0	0
Notes	0		0	0
Total long-term debt	0		0	0
Equity	(109,598)		32,416	(50,963)
Total Liabilities and Partners' Equity	490,210		602,559	486,232
June 2014 Notes [Member] | Reportable Legal Entities [Member] | Guarantor Subsidiaries [Member]
Current Assets:
Cash and cash equivalents	36,437		32,715	22,114
Receivables	931,790		938,397	785,879
Inventories	40,076		28,618	37,810
Other current assets	34,569		10,544	35,895
Total current assets	1,042,872		1,010,274	881,698
Property and equipment (net)	1,463,440		1,426,292	1,439,969
Investment In Park	188,484		218,575	203,857
Goodwill	119,605		119,605	119,605
Other intangibles, net	23,340		23,346	23,876
Deferred tax asset	0		0	0
Right-of-Use Asset	72,563
Other Assets	10,959		9,405	9,468
Total Assets	2,921,263		2,807,497	2,678,473
Current Liabilities:
Current maturities of long-term debt	6,187		4,641
Accounts payable	42,085		18,620	39,374
Deferred revenue	139,827		98,614	116,480
Accrued interest	12,847		5,871	13,127
Accrued taxes	22,641		27,487	9,177
Accrued salaries, wages and benefits	0		0	0
Self-insurance reserves	12,536		12,374	12,830
Other accrued liabilities	12,099		10,024	9,436
Total current liabilities	248,222		177,631	200,424
Deferred Tax Liability	87,516		87,516	81,945
Derivative Liability	0		0	0
Lease Liability	65,379
Other Liabilities	9,767		9,889	10,698
Long-Term Debt:
Revolving credit loans	120,000			40,000
Term debt	591,918		592,982	596,175
Notes	492,068		491,820	491,799
Total long-term debt	1,203,986		1,084,802	1,127,974
Equity	1,306,393		1,447,659	1,257,432
Total Liabilities and Partners' Equity	2,921,263		2,807,497	2,678,473
June 2014 Notes [Member] | Eliminations [Member]
Current Assets:
Cash and cash equivalents	(470)		(692)	(4,299)
Receivables	(922,614)		(922,469)	(831,103)
Inventories	0		0	0
Other current assets	(13,869)		(5,007)	(347)
Total current assets	(936,953)		(928,168)	(835,749)
Property and equipment (net)	0		0	0
Investment In Park	(2,012,293)		(2,265,088)	(1,891,357)
Goodwill	0		0	0
Other intangibles, net	0		0	0
Deferred tax asset	(18,310)		(18,224)	(7,150)
Right-of-Use Asset	0
Other Assets	0		0	0
Total Assets	(2,967,556)		(3,211,480)	(2,734,256)
Current Liabilities:
Current maturities of long-term debt	0		0
Accounts payable	(923,084)		(923,161)	(835,402)
Deferred revenue	0		0	0
Accrued interest	0		0	0
Accrued taxes	(13,869)		(5,007)	(347)
Accrued salaries, wages and benefits	0		0	0
Self-insurance reserves	0			0
Other accrued liabilities	0		0	0
Total current liabilities	(936,953)		(928,168)	(835,749)
Deferred Tax Liability	(18,310)		(18,224)	(7,150)
Derivative Liability	0		0	0
Lease Liability	0
Other Liabilities	0		0	0
Long-Term Debt:
Revolving credit loans	0			0
Term debt	0		0	0
Notes	0		0	0
Total long-term debt	0		0	0
Equity	(2,012,293)		(2,265,088)	(1,891,357)
Total Liabilities and Partners' Equity	(2,967,556)		(3,211,480)	(2,734,256)
June 2014 Notes [Member] | Co-Issuer Subsidiary (Magnum) [Member] | Reportable Legal Entities [Member] | Subsidiary Issuer [Member]
Current Assets:
Cash and cash equivalents	0		0	0
Receivables	1,765		1,093	1,232
Inventories	0		0	0
Other current assets	7,158		1,411	1,922
Total current assets	8,923		2,504	3,154
Property and equipment (net)	794		802	827
Investment In Park	1,076,487		1,182,345	967,791
Goodwill	0		0	0
Other intangibles, net	0		0	0
Deferred tax asset	18,310		18,224	7,150
Right-of-Use Asset	0
Other Assets	0		0	0
Total Assets	1,104,514		1,203,875	978,922
Current Liabilities:
Current maturities of long-term debt	1,313		984
Accounts payable	331,881		359,953	302,858
Deferred revenue	500		0	0
Accrued interest	2		1	143
Accrued taxes	0		6,668	0
Accrued salaries, wages and benefits	13,087		17,552	13,777
Self-insurance reserves	9,602		10,214	10,438
Other accrued liabilities	4,297		4,903	5,249
Total current liabilities	360,682		400,275	332,465
Deferred Tax Liability	0		0	0
Derivative Liability	11,184		5,796	1,092
Lease Liability	0
Other Liabilities	547		1,169	705
Long-Term Debt:
Revolving credit loans	0			0
Term debt	126,250		126,525	127,350
Notes	0		0	0
Total long-term debt	126,250		126,525	127,350
Equity	605,851		670,110	517,310
Total Liabilities and Partners' Equity	1,104,514		1,203,875	978,922
June 2014 Notes [Member] | Co-Issuer Subsidiary (Cedar Canada) [Member] | Reportable Legal Entities [Member] | Subsidiary Issuer [Member]
Current Assets:
Cash and cash equivalents	24,305		73,326	25,073
Receivables	33,390		34,497	74,787
Inventories	2,553		2,135	2,493
Other current assets	10,382		5,462	2,459
Total current assets	70,630		115,420	104,812
Property and equipment (net)	182,520		172,344	180,303
Investment In Park	257,859		262,462	234,220
Goodwill	59,660		58,440	62,012
Other intangibles, net	13,302		13,030	13,834
Deferred tax asset	0		0	0
Right-of-Use Asset	31
Other Assets	37		36	39
Total Assets	584,039		621,732	595,220
Current Liabilities:
Current maturities of long-term debt	0		0
Accounts payable	2,779		2,430	1,806
Deferred revenue	11,009		8,460	8,033
Accrued interest	8,033		2,054	7,634
Accrued taxes	0		0	463
Accrued salaries, wages and benefits	909		1,234	736
Self-insurance reserves	1,441		1,433	1,543
Other accrued liabilities	148		136	268
Total current liabilities	24,319		15,747	20,483
Deferred Tax Liability	13,312		12,425	12,664
Derivative Liability	0		0	0
Lease Liability	20
Other Liabilities	0		0	0
Long-Term Debt:
Revolving credit loans	0			0
Term debt	0		0	0
Notes	446,339		446,241	445,458
Total long-term debt	446,339		446,241	445,458
Equity	100,049		147,319	116,615
Total Liabilities and Partners' Equity	584,039		621,732	595,220
April 2017 Notes [Member] | Reportable Legal Entities [Member] | Parent Company [Member]
Current Assets:
Cash and cash equivalents	0		0	0
Receivables	0		0	0
Inventories	0		0	0
Other current assets	73		179	69
Total current assets	73		179	69
Property and equipment (net)	0		0	0
Investment In Park	489,463		601,706	485,489
Goodwill	674		674	674
Other intangibles, net	0		0	0
Deferred tax asset	0		0	0
Right-of-Use Asset	0
Other Assets	0		0	0
Total Assets	490,210		602,559	486,232
Current Liabilities:
Current maturities of long-term debt	0		0
Accounts payable	593,593		565,472	531,176
Deferred revenue	0		0	0
Accrued interest	4		1	215
Accrued taxes	1,111		443	883
Accrued salaries, wages and benefits	0		0	0
Self-insurance reserves	0		0	0
Other accrued liabilities	3,201		3,318	3,283
Total current liabilities	597,909		569,234	535,557
Deferred Tax Liability	0		0	0
Derivative Liability	1,899		909	1,638
Lease Liability	0
Other Liabilities	0		0	0
Long-Term Debt:
Revolving credit loans	0			0
Term debt	0		0	0
Notes	0		0	0
Total long-term debt	0		0	0
Equity	(109,598)		32,416	(50,963)
Total Liabilities and Partners' Equity	490,210		602,559	486,232
April 2017 Notes [Member] | Reportable Legal Entities [Member] | Guarantor Subsidiaries [Member]
Current Assets:
Cash and cash equivalents	181		2,052	0
Receivables	898,919		902,155	762,874
Inventories	7,302		5,216	7,149
Other current assets	6,483		1,564	7,226
Total current assets	912,885		910,987	777,249
Property and equipment (net)	1,463,440		1,426,292	1,439,969
Investment In Park	188,484		218,574	203,858
Goodwill	111,217		111,217	111,217
Other intangibles, net	23,340		23,346	23,876
Deferred tax asset	0		0	0
Right-of-Use Asset	69,084
Other Assets	8,983		8,988	9,069
Total Assets	2,777,433		2,699,404	2,565,238
Current Liabilities:
Current maturities of long-term debt	0		0
Accounts payable	8,274		3,625	9,103
Deferred revenue	30,021		24,552	26,988
Accrued interest	0		0	0
Accrued taxes	14,410		19,400	1,395
Accrued salaries, wages and benefits	0		0	0
Self-insurance reserves	1,896		2,066	2,355
Other accrued liabilities	7,863		4,553	4,382
Total current liabilities	62,464		54,196	44,223
Deferred Tax Liability	87,516		87,516	81,945
Derivative Liability	0		0	0
Lease Liability	63,610
Other Liabilities	9,680		9,802	10,578
Long-Term Debt:
Revolving credit loans	0			0
Term debt	0		0	0
Notes	0		0	0
Total long-term debt	0		0	0
Equity	2,554,163		2,547,890	2,428,492
Total Liabilities and Partners' Equity	2,777,433		2,699,404	2,565,238
April 2017 Notes [Member] | Eliminations [Member]
Current Assets:
Cash and cash equivalents	(470)		(692)	(4,299)
Receivables	(922,614)		(922,469)	(831,103)
Inventories	0		0	0
Other current assets	(13,869)		(5,007)	(347)
Total current assets	(936,953)		(928,168)	(835,749)
Property and equipment (net)	0		0	0
Investment In Park	(3,572,176)		(3,782,984)	(3,317,724)
Goodwill	0		0	0
Other intangibles, net	0		0	0
Deferred tax asset	(18,310)		(18,224)	(7,150)
Right-of-Use Asset	0
Other Assets	0		0	0
Total Assets	(4,527,439)		(4,729,376)	(4,160,623)
Current Liabilities:
Current maturities of long-term debt	0		0
Accounts payable	(923,084)		(923,161)	(835,402)
Deferred revenue	0		0	0
Accrued interest	0		0	0
Accrued taxes	(13,869)		(5,007)	(347)
Accrued salaries, wages and benefits	0		0	0
Self-insurance reserves	0		0	0
Other accrued liabilities	0		0	0
Total current liabilities	(936,953)		(928,168)	(835,749)
Deferred Tax Liability	(18,310)		(18,224)	(7,150)
Derivative Liability	0		0	0
Lease Liability	0
Other Liabilities	0		0	0
Long-Term Debt:
Revolving credit loans	0			0
Term debt	0		0	0
Notes	0		0	0
Total long-term debt	0		0	0
Equity	(3,572,176)		(3,782,984)	(3,317,724)
Total Liabilities and Partners' Equity	(4,527,439)		(4,729,376)	(4,160,623)
April 2017 Notes [Member] | Co-Issuer Subsidiary (Magnum) [Member] | Reportable Legal Entities [Member] | Subsidiary Issuer [Member]
Current Assets:
Cash and cash equivalents	0		0	0
Receivables	1,765		1,093	1,232
Inventories	0		0	0
Other current assets	7,158		1,411	1,922
Total current assets	8,923		2,504	3,154
Property and equipment (net)	794		802	827
Investment In Park	1,076,487		1,182,345	967,791
Goodwill	0		0	0
Other intangibles, net	0		0	0
Deferred tax asset	18,310		18,224	7,150
Right-of-Use Asset	0
Other Assets	0		0	0
Total Assets	1,104,514		1,203,875	978,922
Current Liabilities:
Current maturities of long-term debt	1,313		984
Accounts payable	331,881		359,953	302,858
Deferred revenue	500		0	0
Accrued interest	2		1	143
Accrued taxes	0		6,668	0
Accrued salaries, wages and benefits	13,087		17,552	13,777
Self-insurance reserves	9,602		10,214	10,438
Other accrued liabilities	4,297		4,903	5,249
Total current liabilities	360,682		400,275	332,465
Deferred Tax Liability	0		0	0
Derivative Liability	11,184		5,796	1,092
Lease Liability	0
Other Liabilities	547		1,169	705
Long-Term Debt:
Revolving credit loans	0			0
Term debt	126,250		126,525	127,350
Notes	0		0	0
Total long-term debt	126,250		126,525	127,350
Equity	605,851		670,110	517,310
Total Liabilities and Partners' Equity	1,104,514		1,203,875	978,922
April 2017 Notes [Member] | Co-Issuer Subsidiary (Cedar Canada) [Member] | Reportable Legal Entities [Member] | Subsidiary Issuer [Member]
Current Assets:
Cash and cash equivalents	24,305		73,326	25,073
Receivables	33,390		34,497	74,787
Inventories	2,553		2,135	2,493
Other current assets	10,382		5,462	2,459
Total current assets	70,630		115,420	104,812
Property and equipment (net)	182,520		172,344	180,303
Investment In Park	257,859		262,462	234,220
Goodwill	59,660		58,440	62,012
Other intangibles, net	13,302		13,030	13,834
Deferred tax asset	0		0	0
Right-of-Use Asset	31
Other Assets	37		36	39
Total Assets	584,039		621,732	595,220
Current Liabilities:
Current maturities of long-term debt	0		0
Accounts payable	2,779		2,430	1,806
Deferred revenue	11,009		8,460	8,033
Accrued interest	8,033		2,054	7,634
Accrued taxes	0		0	463
Accrued salaries, wages and benefits	909		1,234	736
Self-insurance reserves	1,441		1,433	1,543
Other accrued liabilities	148		136	268
Total current liabilities	24,319		15,747	20,483
Deferred Tax Liability	13,312		12,425	12,664
Derivative Liability	0		0	0
Lease Liability	20
Other Liabilities	0		0	0
Long-Term Debt:
Revolving credit loans	0			0
Term debt	0		0	0
Notes	446,339		446,241	445,458
Total long-term debt	446,339		446,241	445,458
Equity	100,049		147,319	116,615
Total Liabilities and Partners' Equity	584,039		621,732	595,220
April 2017 Notes [Member] | Co-Issuer Subsidiary (Millennium) [Member] | Reportable Legal Entities [Member] | Subsidiary Issuer [Member]
Current Assets:
Cash and cash equivalents	36,256		30,663	22,114
Receivables	32,871		36,242	23,005
Inventories	32,774		23,402	30,661
Other current assets	28,086		8,980	28,669
Total current assets	129,987		99,287	104,449
Property and equipment (net)	0		0	0
Investment In Park	1,559,883		1,517,897	1,426,366
Goodwill	8,388		8,388	8,388
Other intangibles, net	0		0	0
Deferred tax asset	0		0	0
Right-of-Use Asset	3,479
Other Assets	1,976		417	399
Total Assets	1,703,713		1,625,989	1,539,602
Current Liabilities:
Current maturities of long-term debt	6,187		4,641
Accounts payable	33,811		14,995	30,271
Deferred revenue	109,806		74,062	89,492
Accrued interest	12,847		5,871	13,127
Accrued taxes	8,231		8,087	7,782
Accrued salaries, wages and benefits	0		0	0
Self-insurance reserves	10,640		10,308	10,475
Other accrued liabilities	4,236		5,471	5,054
Total current liabilities	185,758		123,435	156,201
Deferred Tax Liability	0		0	0
Derivative Liability	0		0	0
Lease Liability	1,769
Other Liabilities	87		87	120
Long-Term Debt:
Revolving credit loans	120,000			40,000
Term debt	591,918		592,982	596,175
Notes	492,068		491,820	491,799
Total long-term debt	1,203,986		1,084,802	1,127,974
Equity	312,113		417,665	255,307
Total Liabilities and Partners' Equity	$ 1,703,713		$ 1,625,989	$ 1,539,602