Cooperative Marketing Agreement (Narrative) (Details) - USD ($)		12 Months Ended
	Jul. 30, 2015	Dec. 31, 2016	Dec. 31, 2015
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Obligation under the Agreement to enhance purses for live horse racing meet due current		$ 6,700,000	$ 6,200,000
Obligation under Agreement to support joint marketing activities due current		1,198,000	944,000
Other revenue		6,006,217	5,425,754
Advertising and marketing expense		2,331,719	1,978,290
Depreciation		2,547,772	2,297,613
Revenues related to marketing payment		1,096,000	926,000
Advertising and marketing expenses related to marketing payment		870,000	700,000
Depreciation related to marketing payment		226,000	226,000
Stock based compensation expense		314,088	284,628
Proceeds from sale of assets		22,500	99,441
Gain on disposal of assets		$ 22,500	347,348
Shakopee Valley RV Park [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Proceeds from sale of assets	$ 100,000
Gain on disposal of assets	$ 347,000
Stock Appreciation Rights (SARs) [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock based compensation expense			$ 142,000