Summary of Significant Accounting Policies - Promotional Allowances (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Revenue Recognition, Multiple-deliverable Arrangements [Line Items]
Total retail value of promotional allowances	$ 4,042	$ 2,847	$ 3,468
Total cost of promotional allowances	3,677	3,040	3,319
Food and Beverage
Revenue Recognition, Multiple-deliverable Arrangements [Line Items]
Total retail value of promotional allowances	1,000	1,486	1,553
Total cost of promotional allowances	1,750	2,080	2,109
Non Subsidized Free Play
Revenue Recognition, Multiple-deliverable Arrangements [Line Items]
Total retail value of promotional allowances	2,718	978	1,720
Total cost of promotional allowances	1,603	577	1,015
Players Club Awards
Revenue Recognition, Multiple-deliverable Arrangements [Line Items]
Total retail value of promotional allowances	324	383	195
Total cost of promotional allowances	$ 324	$ 383	$ 195