Customer Contract Liabilities Schedule of Customer Contract Liabilities (Details) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Dec. 31, 2019	Dec. 31, 2018
Revenue Recognition [Abstract]
Casino outstanding chips and front money deposits	$ 836,370	$ 907,598	$ 769,053	$ 905,561
Change in outstanding chips and front money deposits	67,317	2,037
Advanced room deposits and ticket sales	28,885	43,086	49,834	42,197
Change in advanced room deposits and ticket sales	(20,949)	889
Other gaming related liabilities	6,212	9,297	13,970	12,694
Change in other gaming related liabilities	(7,758)	(3,397)
Loyalty program liabilities	23,362	22,918	21,148	18,148
Change in loyalty program liabilities	2,214	4,770
Total customer contract liabilities	894,829	982,899	$ 854,005	$ 978,600
Change in total customer contract liabilities	$ 40,824	$ 4,299