Segment Information - Total Asset Information For Segments (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012	Dec. 31, 2012
Segment Reporting, Asset Reconciling Item [Line Items]
Total assets	$ 1,097,140		$ 1,114,337
Capital expenditures	13,694	9,120
Racing Operations
Segment Reporting, Asset Reconciling Item [Line Items]
Total assets	640,241		659,175
Capital expenditures	5,002	1,573
Gaming Operations
Segment Reporting, Asset Reconciling Item [Line Items]
Total assets	222,446		225,872
Capital expenditures	6,426	1,201
Online Operations
Segment Reporting, Asset Reconciling Item [Line Items]
Total assets	187,756		184,638
Capital expenditures	1,985	1,062
Other Investments
Segment Reporting, Asset Reconciling Item [Line Items]
Total assets	46,697		44,652
Capital expenditures	$ 281	$ 5,284