Segment Information - Total Asset Information For Segments (Details) (USD $) In Thousands, unless otherwise specified	6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Dec. 31, 2013
Segment Reporting, Asset Reconciling Item [Line Items]
Total assets	$ 1,363,139		$ 1,352,261
Capital expenditures	38,475	23,772
Racing Operations Segment [Member]
Segment Reporting, Asset Reconciling Item [Line Items]
Total assets	521,657		513,345
Capital expenditures	27,915	10,210
Gaming Segment [Member]
Segment Reporting, Asset Reconciling Item [Line Items]
Total assets	617,792		622,038
Capital expenditures	4,119	9,048
Online Operations
Segment Reporting, Asset Reconciling Item [Line Items]
Total assets	191,450		186,621
Capital expenditures	3,174	3,528
Other Investments Segment [Member]
Segment Reporting, Asset Reconciling Item [Line Items]
Total assets	32,240		30,257
Capital expenditures	$ 3,267	$ 986