Commitments and Contingencies (Narrative) (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2015 USD ($) Breach	Dec. 31, 2014 USD ($)	Dec. 31, 2013 USD ($)	Dec. 31, 2007
Loss Contingencies [Line Items]
Liability resulting from network security events	$ 5,000
Expense related to network security breach	$ 1,200
Number of security breaches | Breach	2
Rent expense	$ 7,600	$ 7,600	$ 8,000
Number of years ago that the gas station contaminated the soil	35 years
Environmental remediation expense	$ 0	0	3,185
Amount of coverage	5,000
Insurance recoveries	300	$ 600	$ 1,000
Inflation rate (percent)				2.40%
Discount rate (percent)				6.70%
Chartwell Advisory Group, Ltd v Flamingo Gaming LLC [Member]
Loss Contingencies [Line Items]
Estimate of possible loss	$ 300
Nevada [Member]
Loss Contingencies [Line Items]
Term of extension period	25 years
Whiskey Pete's [Member]
Loss Contingencies [Line Items]
Environmental remediation expense	$ 4,000