Stock-Based Compensation - Share Based Compensation Allocated Costs (Detail) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Stock-based compensation expense	$ 21,084	$ 9,830	$ 30,448	$ 20,168
Total stock-based compensation capitalized	486	83	703	147
Total stock-based compensation costs	21,570	9,913	31,151	20,315
Reversal of compensation cost previously recognized for awards forfeited in connection with departure of employee			3,300
Incremental compensation cost recognized in connection with vesting of restricted stock awards	4,400		4,400
Casino
Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Stock-based compensation expense	3,196	1,790	2,300	4,374
Rooms
Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Stock-based compensation expense	346	223	695	441
Food and beverage
Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Stock-based compensation expense	666	477	1,303	809
Entertainment, retail and other
Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Stock-based compensation expense	84	62	157	106
General and administrative
Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Stock-based compensation expense	16,792	6,938	25,993	13,768
Preopening [Member]
Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Stock-based compensation expense	$ 0	$ 340	$ 0	$ 670

Amount of expense for award under share-based payment arrangement. Excludes amount capitalized.

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Amount of noncash expense (reversal of expense) for pension and other postretirement benefits.

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