Segment Information - Total Asset Information For Segments (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013	Dec. 31, 2013
Segment Reporting, Asset Reconciling Item [Line Items]
Total assets	$ 1,351,083		$ 1,352,261
Capital expenditures	20,169	13,694
Racing Operations Segment [Member]
Segment Reporting, Asset Reconciling Item [Line Items]
Total assets	507,807		513,345
Capital expenditures	14,037	5,002
Gaming Segment [Member]
Segment Reporting, Asset Reconciling Item [Line Items]
Total assets	621,710		622,038
Capital expenditures	2,250	6,426
Online Operations
Segment Reporting, Asset Reconciling Item [Line Items]
Total assets	189,746		186,621
Capital expenditures	1,592	1,985
Other Investments Segment [Member]
Segment Reporting, Asset Reconciling Item [Line Items]
Total assets	31,820		30,257
Capital expenditures	$ 2,290	$ 281