Segment Information - Total Asset Information For Segments (Details) (USD $) In Thousands, unless otherwise specified	9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Dec. 31, 2011
Segment Reporting, Asset Reconciling Item [Line Items]
Assets	$ 939,190		$ 948,022
Capital expenditures	25,456	16,802
Racing Operations
Segment Reporting, Asset Reconciling Item [Line Items]
Assets	507,363		509,133
Capital expenditures	7,800	6,943
Gaming Operations
Segment Reporting, Asset Reconciling Item [Line Items]
Assets	214,825		242,174
Capital expenditures	6,846	6,099
Online Operations
Segment Reporting, Asset Reconciling Item [Line Items]
Assets	185,483		183,397
Capital expenditures	3,407	1,647
Other Investments
Segment Reporting, Asset Reconciling Item [Line Items]
Assets	31,519		13,318
Capital expenditures	7,403	2,113
Corporate
Segment Reporting, Asset Reconciling Item [Line Items]
Capital expenditures	$ 3,700