Equity-Based Compensation - Additional Information (Detail) (USD $) In Thousands, except Share data, unless otherwise specified	0 Months Ended				6 Months Ended		0 Months Ended		3 Months Ended		6 Months Ended				0 Months Ended	3 Months Ended		6 Months Ended				0 Months Ended	3 Months Ended	6 Months Ended		3 Months Ended		6 Months Ended		3 Months Ended	6 Months Ended
	Apr. 18, 2013 Units Surrendered for Shares Plan [Member] Common Stock [Member]	Apr. 19, 2013 2013 Omnibus Incentive Plan [Member]	Jun. 30, 2014 2013 Omnibus Incentive Plan [Member]	Apr. 19, 2013 2013 Omnibus Incentive Plan [Member]	Jun. 30, 2014 Employee Unit Incentive Plan [Member]	Jun. 30, 2014 Employee Unit Plan and 2013 Grants [Member] Tranches	Apr. 18, 2013 Class D Units and Vested TVUs Surrendered for Shares of Stock [Member] Units Surrendered for Shares Plan [Member] Common Stock [Member]	Apr. 18, 2013 Unvested TVUs and PVUs Surrendered for Shares of Unvested Restricted Stock [Member] Units Surrendered for Shares Plan [Member] Common Stock [Member]	Jun. 30, 2014 2.25x Performance Restricted Shares [Member]	Jun. 30, 2013 2.25x Performance Restricted Shares [Member]	Jun. 30, 2014 2.25x Performance Restricted Shares [Member]	Jun. 30, 2013 2.25x Performance Restricted Shares [Member]	Jun. 30, 2014 2.25x Performance Restricted Shares [Member] Units Surrendered for Shares Plan [Member]	Jun. 30, 2014 2.25x Performance Restricted Shares [Member] 2013 Omnibus Incentive Plan [Member]	Jul. 01, 2014 2.25x Performance Restricted Shares [Member] Omnibus Stock Plan [Member] Subsequent Events [Member] Units Surrendered for Shares Plan [Member] Blackstone and Affiliates [Member]	Jun. 30, 2014 2.75x Performance Restricted Shares [Member]	Jun. 30, 2013 2.75x Performance Restricted Shares [Member]	Jun. 30, 2014 2.75x Performance Restricted Shares [Member]	Jun. 30, 2013 2.75x Performance Restricted Shares [Member]	Jun. 30, 2014 2.75x Performance Restricted Shares [Member] Units Surrendered for Shares Plan [Member]	Jun. 30, 2014 2.75x Performance Restricted Shares [Member] 2013 Omnibus Incentive Plan [Member]	Jul. 01, 2014 2.75x Performance Restricted Shares [Member] Omnibus Stock Plan [Member] Subsequent Events [Member] Units Surrendered for Shares Plan [Member] Blackstone and Affiliates [Member]	Jun. 30, 2014 Time Restricted Shares [Member]	Jun. 30, 2014 Time Restricted Shares [Member]	Jun. 30, 2014 Time Restricted Shares [Member] Units Surrendered for Shares Plan [Member]	Jun. 30, 2014 Time Restricted Shares [Member] 2013 Omnibus Incentive Plan [Member]	Jun. 30, 2013 Time Restricted Shares [Member] 2013 Omnibus Incentive Plan [Member]	Jun. 30, 2014 Time Restricted Shares [Member] 2013 Omnibus Incentive Plan [Member]	Jun. 30, 2013 Time Restricted Shares [Member] 2013 Omnibus Incentive Plan [Member]	Jun. 30, 2013 Time Vesting Units and Time Restricted Shares [Member]	Jun. 30, 2013 Time Vesting Units and Time Restricted Shares [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Employee Unit Incentive Plan terms					Under the Employee Unit Plan, the Partnerships granted employee units to certain key employees of SEA ("Employee Units"). The Employee Units that were granted were accounted for as equity awards and were divided into three tranches, Time Vesting Units ("TVUs"), 2.25x Performance Vesting Units ("PVUs") and 2.75x PVUs.
Number of tranches for each equity award						3
Shares provided for surrender of units, in shares	4,165,861						949,142	3,216,719
Equity compensation expense									$ 0	$ 0	$ 0	$ 0				$ 0	$ 0	$ 0	$ 0				$ 276	$ 526		$ 297	$ 1,291	$ 809	$ 1,291	$ 611	$ 931
Unrecognized compensation cost													27,880	4,930						18,710	3,730				797	1,410		1,410
Annualized effective compounded return rate											20.00%							15.00%
Return on investment											2.25x multiple on Blackstone's investment							2.75x multiple on Blackstone's investment
Common stock reserved for future issuance				15,000,000
Restricted stock granted to directors, officers and employees		494,557
Additional future cash proceeds															$ 27,000							$ 623,000
Shares available for future issuance			14,519,888