COOPERATIVE MARKETING AGREEMENT (Purse Enhancement And Marketing Payments) (Details) - SMSC	12 Months Ended
	Dec. 31, 2019 USD ($)
Cooperative Marketing Agreement (CMA)
Receivables due per agreement
Amount to various horsemen associations included each year in purse enhancement payments to horsemen	$ 100,000
Purse Enhancement Payments To Horsemen
Obligations due per agreement
2020	7,380,000
2021	7,380,000
2022	7,380,000
Marketing Payments To Canterbury Park
Receivables due per agreement
2020	1,620,000
2021	1,620,000
2022	$ 1,620,000