Consolidating Financial Information of Guarantors and Issuers Income Statement (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended		12 Months Ended
	Jul. 01, 2012	Jun. 26, 2011	Jul. 01, 2012	Jun. 26, 2011	Jul. 01, 2012	Jun. 26, 2011
Condensed Financial Statements, Captions [Line Items]
Net revenues	$ 357,606	$ 284,490	$ 385,804	$ 311,359	$ 1,102,917	$ 986,048
Costs and expenses:
Cost of food, merchandise and games revenues	32,486	27,111	36,573	31,223	97,407	87,611
Operating expenses	146,236	124,978	217,521	190,106	458,266	417,817
Selling, general and administrative	44,511	37,233	62,495	58,148	144,773	129,657
Depreciation and amortization	48,330	43,385	52,409	47,409	130,837	127,508
Loss on impairment / retirement of fixed assets, net			(770)	196	1,599	62,948
Loss on impairment of goodwill and other intangibles	0	0	0	0	0	903
(Gain) loss on impairment / retirement of fixed assets, net	(862)	0	(770)	196	1,599	62,948
Total costs and expenses	270,701	232,707	368,228	327,082	832,882	826,444
Operating income (loss)	86,905	51,783	17,576	(15,723)	270,035	159,604
Interest expense (income), net	30,234	42,178	57,021	83,209	130,840	169,979
Net effect of swaps	(173)	(1,432)	(1,143)	455	(14,717)	9,040
Loss on early extinguishment of debt	0	0	0	0	0	35,289
Unrealized / realized foreign currency (gain) loss	9,301	3,043	1,109	(3,845)	14,863	(24,404)
Other (income) expense	0	184	0	1,173	(218)	1,173
(Income) loss from investment in affiliates	0	0	0	0	0	0
Income (loss) before taxes	47,543	7,810	(39,411)	(96,715)	139,267	(31,473)
Provision (benefit) for taxes	11,221	3,528	(10,318)	(16,071)	16,970	37,418
Net income (loss)	36,322	4,282	(29,093)	(80,644)	122,297	(68,891)
Other Comprehensive Income (Loss), Net of Tax [Abstract]
Cumualtive foreign currency translation adjustment	481	798	(688)	(488)	733	(7,567)
Unrealized income on cash flow hedging derivatives	(2,370)	(6,474)	(2,031)	5,590	(3,854)	40,528
Other comprehensive income (loss), net of tax	(1,889)	(5,676)	(2,719)	5,102	(3,121)	32,961
Total Comprehensive Income (Loss)	34,433	(1,394)	(31,812)	(75,542)	119,176	(35,930)
Net Income (Loss), Per Outstanding Limited Partnership Unit, Basic	0.65	0.08	(0.52)	(1.46)	2.21	(1.24)
Net income (loss) per limited partner unit	0.65	0.08	(0.52)	(1.46)	2.19	(1.24)
Cedar Fair L.P. (Parent) [Member]
Condensed Financial Statements, Captions [Line Items]
Net revenues	43,745	33,510	45,201	35,567	150,783	136,326
Costs and expenses:
Cost of food, merchandise and games revenues	0	0	0	0	0	0
Operating expenses	1,438	1,448	2,773	2,923	5,341	5,758
Selling, general and administrative	1,656	3,310	2,988	6,752	6,309	6,970
Depreciation and amortization	13,531	11,998	14,227	12,667	38,843	36,408
Loss on impairment / retirement of fixed assets, net				196		928
Loss on impairment of goodwill and other intangibles						0
(Gain) loss on impairment / retirement of fixed assets, net	861		779		(15)
Total costs and expenses	15,764	16,756	19,209	22,538	50,508	50,064
Operating income (loss)	27,981	16,754	25,992	13,029	100,275	86,262
Interest expense (income), net	13,067	23,634	(24,225)	(46,874)	61,742	99,472
Net effect of swaps	(104)	(2,017)	(69)	3,118	(9,027)	(552)
Loss on early extinguishment of debt						24,831
Unrealized / realized foreign currency (gain) loss	0	0	0	0	0	0
Other (income) expense	188	371	(375)	(1,547)	533	1,922
(Income) loss from investment in affiliates	(24,215)	(11,612)	(26,276)	(45,901)	(85,326)	21,513
Income (loss) before taxes	39,045	6,378	(24,953)	(78,175)	132,353	(60,924)
Provision (benefit) for taxes	2,723	2,096	4,140	2,469	10,056	7,967
Net income (loss)	36,322	4,282	(29,093)	(80,644)	122,297	(68,891)
Other Comprehensive Income (Loss), Net of Tax [Abstract]
Cumualtive foreign currency translation adjustment	481	798	(688)	(488)	733	(7,567)
Unrealized income on cash flow hedging derivatives	(2,370)	(6,474)	(2,031)	5,590	(3,854)	40,528
Other comprehensive income (loss), net of tax	(1,889)	(5,676)	(2,719)	5,102	(3,121)	32,961
Total Comprehensive Income (Loss)	34,433	(1,394)	(31,812)	(75,542)	119,176	(35,930)
Co-Issuer Subsidiary (Magnum) [Member]
Condensed Financial Statements, Captions [Line Items]
Net revenues	77,510	59,616	80,087	63,269	267,882	244,989
Costs and expenses:
Cost of food, merchandise and games revenues	0	0	0	0	0	0
Operating expenses	52,584	44,059	73,020	62,836	175,593	164,588
Selling, general and administrative	24,525	19,155	38,221	33,766	88,725	77,897
Depreciation and amortization	9	12	18	23	42	95
Loss on impairment / retirement of fixed assets, net				0		0
Loss on impairment of goodwill and other intangibles						0
(Gain) loss on impairment / retirement of fixed assets, net	0		0		0
Total costs and expenses	77,118	63,226	111,259	96,625	264,360	242,580
Operating income (loss)	392	(3,610)	(31,172)	(33,356)	3,522	2,409
Interest expense (income), net	8,084	2,755	(14,699)	(5,310)	24,419	19,581
Net effect of swaps	(69)	(191)	(263)	(1,102)	(121)	1,102
Loss on early extinguishment of debt						0
Unrealized / realized foreign currency (gain) loss	0	0	0	0	0	3,079
Other (income) expense	(2,041)	(1,710)	5,076	3,001	(9,873)	(5,871)
(Income) loss from investment in affiliates	(16,712)	(7,667)	(6,738)	(22,894)	(33,610)	18,914
Income (loss) before taxes	11,130	3,203	(47,796)	(59,661)	22,707	(28,238)
Provision (benefit) for taxes	(1,876)	(1,196)	(13,548)	(9,918)	(26,630)	23,331
Net income (loss)	13,006	4,399	(34,248)	(49,743)	49,337	(51,569)
Other Comprehensive Income (Loss), Net of Tax [Abstract]
Cumualtive foreign currency translation adjustment	0	0	0	0	0	0
Unrealized income on cash flow hedging derivatives	(775)	(5,651)	(677)	(5,292)	(4,884)	(3,376)
Other comprehensive income (loss), net of tax	(775)	(5,651)	(677)	(5,292)	(4,884)	(3,376)
Total Comprehensive Income (Loss)	12,231	(1,252)	(34,925)	(55,035)	44,453	(54,945)
Co-Issuer Subsidiary (Cedar Canada) [Member]
Condensed Financial Statements, Captions [Line Items]
Net revenues	41,841	29,621	42,107	30,484	138,595	116,401
Costs and expenses:
Cost of food, merchandise and games revenues	3,541	2,730	3,541	2,730	10,743	9,046
Operating expenses	15,935	13,945	21,592	19,562	47,795	44,240
Selling, general and administrative	4,295	3,554	5,055	4,477	11,892	11,027
Depreciation and amortization	6,985	5,876	6,985	5,876	17,976	16,378
Loss on impairment / retirement of fixed assets, net				0		20
Loss on impairment of goodwill and other intangibles						0
(Gain) loss on impairment / retirement of fixed assets, net	1		(9)		52
Total costs and expenses	30,755	26,105	37,182	32,645	88,354	80,711
Operating income (loss)	11,086	3,516	4,925	(2,161)	50,241	35,690
Interest expense (income), net	10,598	13,376	(21,001)	(25,696)	48,119	48,174
Net effect of swaps	0	776	1,475	(2,471)	(5,569)	8,490
Loss on early extinguishment of debt						10,458
Unrealized / realized foreign currency (gain) loss	9,301	(3,043)	(1,109)	3,845	14,863	21,325
Other (income) expense	512	618	(709)	(1,456)	1,602	2,751
(Income) loss from investment in affiliates	(6,781)	(6,440)	3,367	3,979	(10,016)	(1,518)
Income (loss) before taxes	(2,544)	(7,857)	(13,052)	(23,960)	1,242	(11,340)
Provision (benefit) for taxes	(1,322)	(3,866)	(3,656)	(7,549)	7,042	4,835
Net income (loss)	(1,222)	(3,991)	(9,396)	(16,411)	(5,800)	(16,175)
Other Comprehensive Income (Loss), Net of Tax [Abstract]
Cumualtive foreign currency translation adjustment	481	798	(688)	(488)	733	(7,567)
Unrealized income on cash flow hedging derivatives	0	(51)	21	7	21	6,742
Other comprehensive income (loss), net of tax	481	747	(667)	(481)	754	(825)
Total Comprehensive Income (Loss)	(741)	(3,244)	(10,063)	(16,892)	(5,046)	(17,000)
Guarantor Subsidiaries [Member]
Condensed Financial Statements, Captions [Line Items]
Net revenues	315,637	254,768	343,569	280,774	963,915	869,255
Costs and expenses:
Cost of food, merchandise and games revenues	28,945	24,381	33,032	28,493	86,664	78,565
Operating expenses	197,406	158,551	245,296	203,520	647,795	584,154
Selling, general and administrative	14,035	11,214	16,231	13,153	37,847	33,763
Depreciation and amortization	27,805	25,499	31,179	28,843	73,976	74,627
Loss on impairment / retirement of fixed assets, net				0		62,000
Loss on impairment of goodwill and other intangibles						903
(Gain) loss on impairment / retirement of fixed assets, net	0		0		(1,636)
Total costs and expenses	268,191	219,645	325,738	274,009	847,918	834,012
Operating income (loss)	47,446	35,123	17,831	6,765	115,997	35,243
Interest expense (income), net	(1,515)	2,413	2,904	(5,329)	(3,440)	2,752
Net effect of swaps	0	0	0	0	0	0
Loss on early extinguishment of debt						0
Unrealized / realized foreign currency (gain) loss	0	0	0	0	0	0
Other (income) expense	1,341	905	(3,992)	(1,171)	7,520	2,371
(Income) loss from investment in affiliates	(86)	3,275	(6,977)	(15,686)	2,608	16,798
Income (loss) before taxes	47,706	28,530	9,766	(15,421)	109,309	13,322
Provision (benefit) for taxes	11,696	6,494	2,746	(1,073)	26,502	1,285
Net income (loss)	36,010	22,036	7,020	(14,348)	82,807	12,037
Other Comprehensive Income (Loss), Net of Tax [Abstract]
Cumualtive foreign currency translation adjustment	0	0	0	0	0	0
Unrealized income on cash flow hedging derivatives	0	0	0	0	0	0
Other comprehensive income (loss), net of tax	0	0	0	0	0	0
Total Comprehensive Income (Loss)	36,010	22,036	7,020	(14,348)	82,807	12,037
Eliminations [Member]
Condensed Financial Statements, Captions [Line Items]
Net revenues	(121,127)	(93,025)	(125,160)	(98,735)	(418,258)	(380,923)
Costs and expenses:
Cost of food, merchandise and games revenues	0	0	0	0	0	0
Operating expenses	(121,127)	(93,025)	(125,160)	(98,735)	(418,258)	(380,923)
Selling, general and administrative	0	0	0	0	0	0
Depreciation and amortization	0	0	0	0	0	0
Loss on impairment / retirement of fixed assets, net				0		0
Loss on impairment of goodwill and other intangibles						0
(Gain) loss on impairment / retirement of fixed assets, net	0		0		0
Total costs and expenses	(121,127)	(93,025)	(125,160)	(98,735)	(418,258)	(380,923)
Operating income (loss)	0	0	0	0	0	0
Interest expense (income), net		0	0	0	0	0
Net effect of swaps	0	0	0	0	0	0
Loss on early extinguishment of debt						0
Unrealized / realized foreign currency (gain) loss	0	0	0	0	0	0
Other (income) expense	0	0	0	0	0	0
(Income) loss from investment in affiliates	47,794	22,444	36,624	80,502	126,344	(55,707)
Income (loss) before taxes	(47,794)	(22,444)	36,624	80,502	(126,344)	55,707
Provision (benefit) for taxes	0	0	0	0	0	0
Net income (loss)	(47,794)	(22,444)	36,624	80,502	(126,344)	55,707
Other Comprehensive Income (Loss), Net of Tax [Abstract]
Cumualtive foreign currency translation adjustment	(481)	(798)	688	488	(733)	7,567
Unrealized income on cash flow hedging derivatives	775	5,702	656	5,285	4,863	(3,366)
Other comprehensive income (loss), net of tax	294	4,904	1,344	5,773	4,130	4,201
Total Comprehensive Income (Loss)	$ (47,500)	$ (17,540)	$ 37,968	$ 86,275	$ (122,214)	$ 59,908