Segment Information - Total Asset Information For Segments (Details) (USD $)	6 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Dec. 31, 2011
Segment Reporting, Asset Reconciling Item [Line Items]
Assets	$ 959,415,000		$ 948,022,000
Capital expenditures	16,473,000	10,867,000
Racing Operations
Segment Reporting, Asset Reconciling Item [Line Items]
Assets	522,980,000		509,133,000
Capital expenditures	4,532,000	3,681,000
Gaming Operations
Segment Reporting, Asset Reconciling Item [Line Items]
Assets	215,339,000		242,174,000
Capital expenditures	3,250,000	4,736,000
Online Operations
Segment Reporting, Asset Reconciling Item [Line Items]
Assets	189,516,000		183,397,000
Capital expenditures	2,306,000	842,000
Other Investments
Segment Reporting, Asset Reconciling Item [Line Items]
Assets	31,580,000		13,318,000
Capital expenditures	6,385,000	1,608,000
Corporate
Segment Reporting, Asset Reconciling Item [Line Items]
Capital expenditures	$ 3,100