Consolidating Financial Information of Guarantors and Issuers Balance Sheet (Details) (USD $) In Thousands, unless otherwise specified	Mar. 29, 2015	Dec. 31, 2014	Mar. 30, 2014	Dec. 31, 2013
Current Assets:
Cash and cash equivalents	$ 19,725	$ 131,840	$ 8,867	$ 118,056
Receivables	24,125us-gaap_AccountsReceivableNetCurrent	27,395us-gaap_AccountsReceivableNetCurrent	19,630us-gaap_AccountsReceivableNetCurrent
Inventories	37,369us-gaap_InventoryNet	25,883us-gaap_InventoryNet	38,264us-gaap_InventoryNet
Current deferred tax asset	40,827us-gaap_DeferredTaxAssetsNetCurrent	9,265us-gaap_DeferredTaxAssetsNetCurrent	26,653us-gaap_DeferredTaxAssetsNetCurrent
Other current assets	27,027	9,334	30,020
Total current assets	149,073us-gaap_AssetsCurrent	203,717us-gaap_AssetsCurrent	123,434us-gaap_AssetsCurrent
Property and equipment (net)	1,558,264us-gaap_PropertyPlantAndEquipmentNet	1,526,551us-gaap_PropertyPlantAndEquipmentNet	1,533,962us-gaap_PropertyPlantAndEquipmentNet
Investment In Park	0	0	0
Goodwill	219,883us-gaap_Goodwill	228,291us-gaap_Goodwill	233,528us-gaap_Goodwill	238,089us-gaap_Goodwill
Other intangibes, net	36,983	38,191	38,920
Deferred Tax Asset	0us-gaap_DeferredTaxAssetsNetNoncurrent	0us-gaap_DeferredTaxAssetsNetNoncurrent	0us-gaap_DeferredTaxAssetsNetNoncurrent
Other Assets	41,698us-gaap_OtherAssetsNoncurrent	41,569us-gaap_OtherAssetsNoncurrent	43,391us-gaap_OtherAssetsNoncurrent
Assets	2,005,901us-gaap_Assets	2,038,319us-gaap_Assets	1,973,235us-gaap_Assets
Current Liabilities:
Current maturities of long-term debt	0us-gaap_LongTermDebtCurrent	0us-gaap_LongTermDebtCurrent	1,450us-gaap_LongTermDebtCurrent
Accounts payable	38,265us-gaap_AccountsPayableCurrent	23,933us-gaap_AccountsPayableCurrent	45,028us-gaap_AccountsPayableCurrent
Deferred revenue	92,664us-gaap_DeferredRevenueCurrent	61,161us-gaap_DeferredRevenueCurrent	70,148us-gaap_DeferredRevenueCurrent
Accrued interest	12,056us-gaap_InterestPayableCurrent	9,916us-gaap_InterestPayableCurrent	10,073us-gaap_InterestPayableCurrent
Accrued taxes	10,159us-gaap_AccruedIncomeTaxesCurrent	21,800us-gaap_AccruedIncomeTaxesCurrent	6,452us-gaap_AccruedIncomeTaxesCurrent
Accrued salaries, wages and benefits	26,111	34,102	24,519
Self-insurance reserves	22,785us-gaap_SelfInsuranceReserve	23,377us-gaap_SelfInsuranceReserve	22,696us-gaap_SelfInsuranceReserve
Derivative Liability, Current	9,989us-gaap_DerivativeLiabilitiesCurrent	11,791us-gaap_DerivativeLiabilitiesCurrent	0us-gaap_DerivativeLiabilitiesCurrent
Other accrued liabilities	11,486us-gaap_OtherAccruedLiabilitiesCurrent	12,139us-gaap_OtherAccruedLiabilitiesCurrent	4,896us-gaap_OtherAccruedLiabilitiesCurrent
Total current liabilities	223,515us-gaap_LiabilitiesCurrent	198,219us-gaap_LiabilitiesCurrent	185,262us-gaap_LiabilitiesCurrent
Deferred Tax Liability	153,125	152,513	157,281
Derivative Liability	19,252us-gaap_DerivativeLiabilitiesNoncurrent	14,649us-gaap_DerivativeLiabilitiesNoncurrent	27,789us-gaap_DerivativeLiabilitiesNoncurrent
Other Liabilities	15,351us-gaap_OtherLiabilitiesNoncurrent	17,871us-gaap_OtherLiabilitiesNoncurrent	7,755us-gaap_OtherLiabilitiesNoncurrent
Long-Term Debt:
Long-term Line of Credit, Noncurrent	57,000us-gaap_LongTermLineOfCredit	0us-gaap_LongTermLineOfCredit	55,000us-gaap_LongTermLineOfCredit
Term debt	608,850us-gaap_OtherLongTermDebtNoncurrent	608,850us-gaap_OtherLongTermDebtNoncurrent	617,400us-gaap_OtherLongTermDebtNoncurrent
Notes	950,000us-gaap_NotesPayable	950,000us-gaap_NotesPayable	901,957us-gaap_NotesPayable
Total long-term debt	1,615,850us-gaap_LongTermDebtNoncurrent	1,558,850us-gaap_LongTermDebtNoncurrent	1,574,357us-gaap_LongTermDebtNoncurrent
Equity	(21,192)us-gaap_PartnersCapital	96,217us-gaap_PartnersCapital	20,791us-gaap_PartnersCapital
Total Partners' Equity and Liabilities	2,005,901	2,038,319	1,973,235
Cedar Fair L.P. (Parent) [Member]
Current Assets:
Cash and cash equivalents	0	80,000	0	75,000
Receivables	1	8	59
Inventories	0	0	0
Current deferred tax asset	0	0	0
Other current assets	80	680	325
Total current assets	81	80,688	384
Property and equipment (net)	0	470,851	455,780
Investment In Park	622,008	544,340	443,179
Goodwill	674	9,061	9,061
Other intangibes, net	0	0	0
Deferred Tax Asset	0	0	0
Other Assets	5,470	10,615	12,213
Assets	628,233	1,115,555	920,617
Current Liabilities:
Current maturities of long-term debt	0		827
Accounts payable	276,100	352,518	173,364
Deferred revenue	0	0	0
Accrued interest	1,595	4,637	2,580
Accrued taxes	1,792	4,309	4,757
Accrued salaries, wages and benefits	0	0	0
Self-insurance reserves	0	0	0
Derivative Liability, Current	5,980	7,062
Other accrued liabilities	864	508	280
Total current liabilities	286,331	369,034	181,808
Deferred Tax Liability	0	0	0
Derivative Liability	11,197	8,438	16,281
Other Liabilities	0	0	0
Long-Term Debt:
Long-term Line of Credit, Noncurrent	57,000		55,000
Term debt	0	346,969	351,840
Notes	294,897	294,897	294,897
Total long-term debt	351,897	641,866	701,737
Equity	(21,192)	96,217	20,791
Total Partners' Equity and Liabilities	628,233	1,115,555	920,617
Guarantor Subsidiaries Co Issuer Subsidiary Magnum [Member]
Current Assets:
Cash and cash equivalents	0	382	571	4,144
Receivables	89,060	143,931	96,547
Inventories	152	2,074	3,794
Current deferred tax asset	36,111	4,547	22,409
Other current assets	369	2,079	10,578
Total current assets	125,692	153,013	133,899
Property and equipment (net)	5,621	5,630	8,110
Investment In Park	765,178	812,549	744,425
Goodwill	0	0	0
Other intangibes, net	0	0	0
Deferred Tax Asset	24,215	24,827	30,296
Other Assets	20,488	20,874	22,179
Assets	941,194	1,016,893	938,909
Current Liabilities:
Current maturities of long-term debt	0		590
Accounts payable	199,361	203,895	230,516
Deferred revenue	92	60	85
Accrued interest	1,526	3,223	1,567
Accrued taxes	503	0	849
Accrued salaries, wages and benefits	21,608	25,851	18,183
Self-insurance reserves	8,031	5,386	5,431
Derivative Liability, Current	4,009	4,729
Other accrued liabilities	3,365	8,134	3,086
Total current liabilities	238,495	251,278	260,307
Deferred Tax Liability	0	0	0
Derivative Liability	8,055	6,211	11,508
Other Liabilities	3,707	6,105	4,358
Long-Term Debt:
Long-term Line of Credit, Noncurrent	0		0
Term debt	247,890	247,890	251,371
Notes	205,103	205,103	205,103
Total long-term debt	452,993	452,993	456,474
Equity	237,944	300,306	206,262
Total Partners' Equity and Liabilities	941,194	1,016,893	938,909
Co-Issuer Subsidiary (Cedar Canada) [Member]
Current Assets:
Cash and cash equivalents	14,881	45,519	3,524	35,575
Receivables	115,830	85,838	76,669
Inventories	2,070	1,594	2,841
Current deferred tax asset	674	674	800
Other current assets	2,382	23,818	5,589
Total current assets	135,837	157,443	89,423
Property and equipment (net)	202,853	218,260	240,175
Investment In Park	160,401	163,904	138,604
Goodwill	99,603	108,012	113,249
Other intangibes, net	14,119	15,312	16,037
Deferred Tax Asset	0	0	0
Other Assets	7,223	8,034	6,087
Assets	620,036	670,965	603,575
Current Liabilities:
Current maturities of long-term debt	0		33
Accounts payable	2,424	32,691	10,818
Deferred revenue	6,077	4,592	4,048
Accrued interest	7,943	2,056	5,926
Accrued taxes	749	0	0
Accrued salaries, wages and benefits	771	1,103	503
Self-insurance reserves	1,413	1,565	1,664
Derivative Liability, Current	0	0
Other accrued liabilities	99	122	125
Total current liabilities	19,476	42,129	23,117
Deferred Tax Liability	49,695	49,695	56,045
Derivative Liability	0	0	0
Other Liabilities	0	0	0
Long-Term Debt:
Long-term Line of Credit, Noncurrent	0		0
Term debt	13,991	13,991	14,189
Notes	450,000	450,000	401,957
Total long-term debt	463,991	463,991	416,146
Equity	86,874	115,150	108,267
Total Partners' Equity and Liabilities	620,036	670,965	603,575
Guarantor Subsidiaries [Member]
Current Assets:
Cash and cash equivalents	4,844	5,939	4,772	3,337
Receivables	546,424	634,112	530,662
Inventories	35,147	22,215	31,629
Current deferred tax asset	4,042	4,044	3,444
Other current assets	24,196	5,905	15,891
Total current assets	614,653	672,215	586,398
Property and equipment (net)	1,349,790	831,810	829,897
Investment In Park	11,776	43,659	35,052
Goodwill	119,606	111,218	111,218
Other intangibes, net	22,864	22,879	22,883
Deferred Tax Asset	0	0	117
Other Assets	8,517	2,046	2,912
Assets	2,127,206	1,683,827	1,588,477
Current Liabilities:
Current maturities of long-term debt	0		0
Accounts payable	287,570	271,323	314,637
Deferred revenue	86,495	56,509	66,015
Accrued interest	992	0	0
Accrued taxes	7,115	40,639	3,209
Accrued salaries, wages and benefits	3,732	7,148	5,833
Self-insurance reserves	13,341	16,426	15,601
Derivative Liability, Current	0	0
Other accrued liabilities	7,158	3,375	1,405
Total current liabilities	406,403	395,420	406,700
Deferred Tax Liability	127,645	127,645	131,649
Derivative Liability	0	0	0
Other Liabilities	11,644	11,766	3,397
Long-Term Debt:
Long-term Line of Credit, Noncurrent	0		0
Term debt	346,969	0	0
Notes	0	0	0
Total long-term debt	346,969	0	0
Equity	1,234,545	1,148,996	1,046,731
Total Partners' Equity and Liabilities	2,127,206	1,683,827	1,588,477
Eliminations [Member]
Current Assets:
Cash and cash equivalents	0	0	0	0
Receivables	(727,190)	(836,494)	(684,307)
Inventories	0	0	0
Current deferred tax asset	0	0	0
Other current assets	0	(23,148)	(2,363)
Total current assets	(727,190)	(859,642)	(686,670)
Property and equipment (net)	0	0	0
Investment In Park	(1,559,363)	(1,564,452)	(1,361,260)
Goodwill	0	0	0
Other intangibes, net	0	0	0
Deferred Tax Asset	(24,215)	(24,827)	(30,413)
Other Assets	0	0	0
Assets	(2,310,768)	(2,448,921)	(2,078,343)
Current Liabilities:
Current maturities of long-term debt	0		0
Accounts payable	(727,190)	(836,494)	(684,307)
Deferred revenue	0	0	0
Accrued interest	0	0	0
Accrued taxes	0	(23,148)	(2,363)
Accrued salaries, wages and benefits	0	0	0
Self-insurance reserves	0	0	0
Derivative Liability, Current	0	0
Other accrued liabilities	0	0	0
Total current liabilities	(727,190)	(859,642)	(686,670)
Deferred Tax Liability	(24,215)	(24,827)	(30,413)
Derivative Liability	0	0	0
Other Liabilities	0	0	0
Long-Term Debt:
Long-term Line of Credit, Noncurrent	0		0
Term debt	0	0	0
Notes	0	0	0
Total long-term debt	0	0	0
Equity	(1,559,363)	(1,564,452)	(1,361,260)
Total Partners' Equity and Liabilities	$ (2,310,768)	$ (2,448,921)	$ (2,078,343)

Carrying value as of the balance sheet date of liabilities incurred (and for which invoices have typically been received) and payable to vendors for goods and services received that are used in an entity's business. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).

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The amount of ownership interest of different classes of partners in limited partnership.

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