Noncontrolling Interests, Partnerships and Joint Ventures (Details) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016
Noncontrolling Interest [Roll Forward]
Redeemable Noncontrolling Interest Equity Carrying Amount	$ 485,876
Purchase of redeemable units of SFOT and SFOG	(128)	$ (223)
Fresh start accounting fair market value adjustment for purchased units	(32)
Net income attributable to noncontrolling interests	19,605
Redeemable Noncontrolling Interest, Equity, Carrying Amount	505,321
Six Flags over Georgia [Member]
Noncontrolling Interest [Line Items]
Redeemable Noncontrolling Interest, Equity, Redemption Value	258,256
Noncontrolling Interest [Roll Forward]
Redeemable Noncontrolling Interest Equity Carrying Amount	258,256
Purchase of redeemable units of SFOT and SFOG	0
Fresh start accounting fair market value adjustment for purchased units	0
Net income attributable to noncontrolling interests	9,755
Redeemable Noncontrolling Interest, Equity, Carrying Amount	268,011
Six Flags over Texas [Member]
Noncontrolling Interest [Line Items]
Redeemable Noncontrolling Interest, Equity, Redemption Value	203,460
Noncontrolling Interest [Roll Forward]
Redeemable Noncontrolling Interest Equity Carrying Amount	227,620
Purchase of redeemable units of SFOT and SFOG	(128)
Fresh start accounting fair market value adjustment for purchased units	(32)
Net income attributable to noncontrolling interests	9,850
Redeemable Noncontrolling Interest, Equity, Carrying Amount	$ 237,310