Cooperative Marketing Agreement (Purse Enhancement And Marketing Payments) (Details)	9 Months Ended
	Sep. 30, 2016 USD ($)
Cooperative Marketing Agreement [Abstract]
2017, Purse Enhancement Payments to Horesmen	$ 7,466,910	[1]
2018, Purse Enhancement Payments to Horesmen	7,650,000	[1]
2019, Purse Enhancement Payments to Horesmen	7,650,000	[1]
2020, Purse Enhancement Payments to Horesmen	7,650,000	[1]
2021, Purse Enhancement Payments to Horesmen	7,650,000	[1]
2022, Purse Enhancement Payments to Horesmen	7,650,000	[1]
2017, Marketing Payments to Canterbury Park	1,317,690
2018, Marketing Payments to Canterbury Park	1,350,000
2019, Marketing Payments to Canterbury Park	1,350,000
2020, Marketing Payments to Canterbury Park	1,350,000
2021, Marketing Payments to Canterbury Park	1,350,000
2022, Marketing Payments to Canterbury Park	1,350,000
Amount to various horsemen associations included each year in purse enhancement payments to horsemen	$ 100,000

[1] Includes $100,000 each year payable to various horsemen associations