Summary of Significant Accounting Policies - Promotional Allowances (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011
Summary of retail value amounts included in promotional allowances and estimated cost of providing complimentary food, beverages and other items
Total retail value of promotional allowances	$ 3,649	$ 2,826
Total cost of promotional allowances	3,051	2,403
Food and beverage [Member]
Summary of retail value amounts included in promotional allowances and estimated cost of providing complimentary food, beverages and other items
Total retail value of promotional allowances	1,605	1,354
Total cost of promotional allowances	1,605	1,354
Non-subsidized free play [Member]
Summary of retail value amounts included in promotional allowances and estimated cost of providing complimentary food, beverages and other items
Total retail value of promotional allowances	1,459	1,033
Total cost of promotional allowances	861	610
Players club awards [Member]
Summary of retail value amounts included in promotional allowances and estimated cost of providing complimentary food, beverages and other items
Total retail value of promotional allowances	585	439
Total cost of promotional allowances	$ 585	$ 439