Consolidating Financial Information of Guarantors and Issuers (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended				12 Months Ended					3 Months Ended	12 Months Ended	3 Months Ended	12 Months Ended	3 Months Ended	12 Months Ended	3 Months Ended	12 Months Ended	3 Months Ended	12 Months Ended	3 Months Ended	12 Months Ended
	Mar. 31, 2013	Mar. 30, 2014 Senior Unsecured Notes [Member] Notes Payable Due 2018 [Member]	Jul. 30, 2010 Senior Unsecured Notes [Member] Notes Payable Due 2018 [Member]	Mar. 31, 2013 Senior Unsecured Notes [Member] Notes Payable Due 2021 [Member] [Domain]	Mar. 31, 2013 Cedar Fair L.P. (Parent) [Member]	Mar. 31, 2013 Guarantor Subsidiaries Co Issuer Subsidiary Magnum [Member]	Mar. 31, 2013 Co-Issuer Subsidiary (Cedar Canada) [Member]	Mar. 31, 2013 Guarantor Subsidiaries [Member]	Mar. 31, 2013 Eliminations [Member]	Mar. 31, 2013 Scenario, Previously Reported [Member]	Mar. 31, 2013 Scenario, Previously Reported [Member]	Mar. 31, 2013 Scenario, Previously Reported [Member] Cedar Fair L.P. (Parent) [Member]	Mar. 31, 2013 Scenario, Previously Reported [Member] Cedar Fair L.P. (Parent) [Member]	Mar. 31, 2013 Scenario, Previously Reported [Member] Guarantor Subsidiaries Co Issuer Subsidiary Magnum [Member]	Mar. 31, 2013 Scenario, Previously Reported [Member] Guarantor Subsidiaries Co Issuer Subsidiary Magnum [Member]	Mar. 31, 2013 Scenario, Previously Reported [Member] Co-Issuer Subsidiary (Cedar Canada) [Member]	Mar. 31, 2013 Scenario, Previously Reported [Member] Co-Issuer Subsidiary (Cedar Canada) [Member]	Mar. 31, 2013 Scenario, Previously Reported [Member] Guarantor Subsidiaries [Member]	Mar. 31, 2013 Scenario, Previously Reported [Member] Guarantor Subsidiaries [Member]	Mar. 31, 2013 Scenario, Previously Reported [Member] Eliminations [Member]	Mar. 31, 2013 Scenario, Previously Reported [Member] Eliminations [Member]
Condensed Financial Statements, Captions [Line Items]
Repayments of Related Party Debt	$ 0				$ 0	$ 0	$ 0	$ 104,165	$ (104,165)						$ (104,200)
Investments in and Advances to Affiliates, at Fair Value, Period Increase (Decrease)										$ 0	$ 0	$ 65,636	$ 43,043	$ 58,171	$ (49,642)	$ (2,442)	$ (2,479)	$ 32,098	$ 4,568	$ (153,463)	$ 4,510
Debt Instrument, Interest Rate, Stated Percentage			9.125%	5.25%
Subsidiary ownership percentage guaranteeing notes		100.00%
Subsidiary guarantor ownership percentage		100.00%