Equity-Based Compensation - Additional Information (Detail) (USD $) In Thousands, except Share data, unless otherwise specified		3 Months Ended		0 Months Ended			0 Months Ended	3 Months Ended		3 Months Ended	0 Months Ended	3 Months Ended					3 Months Ended				3 Months Ended	0 Months Ended			3 Months Ended
	Apr. 24, 2013 Initial Public Offering [Member]	Mar. 31, 2014 Employee Unit Incentive Plan [Member]	Mar. 31, 2014 Employee Unit Plan and 2013 Grants [Member] Tranches	Apr. 18, 2013 Units Surrendered for Shares Plan [Member] Common Stock [Member]	Apr. 19, 2013 2013 Omnibus Incentive Plan [Member]	Mar. 31, 2014 2013 Omnibus Incentive Plan [Member]	Apr. 19, 2013 2013 Grant [Member]	Mar. 31, 2014 Time Restricted Shares [Member]	Mar. 31, 2014 Time Restricted Shares [Member] Units Surrendered for Shares Plan [Member]	Mar. 31, 2014 Time Restricted Shares [Member] 2013 Omnibus Incentive Plan [Member]	Apr. 19, 2013 Time Restricted Shares [Member] 2013 Grant [Member]	Mar. 31, 2013 Time Vesting Units and Time Restricted Shares [Member]	Mar. 31, 2014 2.25x Performance Restricted Shares [Member]	Mar. 31, 2013 2.25x Performance Restricted Shares [Member]	Mar. 31, 2014 2.25x Performance Restricted Shares [Member] Units Surrendered for Shares Plan [Member]	Mar. 31, 2014 2.25x Performance Restricted Shares [Member] 2013 Omnibus Incentive Plan [Member]	Mar. 31, 2014 2.75x Performance Restricted Shares [Member]	Mar. 31, 2013 2.75x Performance Restricted Shares [Member]	Mar. 31, 2014 2.75x Performance Restricted Shares [Member] Units Surrendered for Shares Plan [Member]	Mar. 31, 2014 2.75x Performance Restricted Shares [Member] 2013 Omnibus Incentive Plan [Member]	Mar. 31, 2014 Performance Restricted Shares [Member]	Apr. 18, 2013 TVUs [Member] Units Surrendered for Shares Plan [Member]	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, 2013 Vested Time Vesting Units Surrendered for Shares of Stock [Member]	Jun. 30, 2013 Unvested Time Vesting Units Surrendered for Unvested Time Restricted Shares [Member]	Apr. 30, 2014 Omnibus Stock Plan [Member] 2.25x Performance Restricted Shares [Member] Units Surrendered for Shares Plan [Member] Subsequent Events [Member] Blackstone and Affiliates [Member]	Apr. 30, 2014 Omnibus Stock Plan [Member] 2.75x Performance Restricted Shares [Member] Units Surrendered for Shares Plan [Member] Subsequent Events [Member] Blackstone and Affiliates [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 which 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
Incremental equity compensation cost at modification																									$ 282	$ 220
Equity compensation expense								250		512		320	0	0			0	0			0
Unrecognized compensation cost									1,047	1,348					27,970	4,950			18,740	3,740
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
Offering price, per share	$ 27.00
Fair value assumptions, holding Period											2 years											2 years
Fair value assumptions, risk free rate											0.24%											0.24%
Fair value assumptions, volatility											33.20%											37.60%
Fair value assumptions, dividend yield											0.00%											0.00%
Common stock reserved for future issuance					15,000,000
Restricted stock granted to directors, officers and employees					494,557
Initial public offering lock up period							180 days
Grant date fair value measuring method							The grant date fair value of the 2.25x and 2.75x Performance Restricted Omnibus shares was measured using the asset-or-nothing option pricing model.
Additional future cash proceeds																											$ 31,000	$ 628,000
Shares available for future issuance						14,528,669