Summary Of Significant Accounting Policies (Narrative) (Details)	12 Months Ended
	Dec. 31, 2016 USD ($) a item	Dec. 31, 2015 USD ($)
Summary Of Significant Accounting Policies [Line Items]
Number of subsidiaries | item	2
Numbers of acres to be developed | a	140
Casino open, number of hours daily	24 hours
Casino open, number of days weekly	7 days
Minnesota State law, maximum number of game tables | item	80
Promissory notes interest	1.43%
Number of promissory notes | item	2
Funds Due To Organization | $	$ 6,512,000	$ 5,429,000
Reclassified from Other Revenue | $	120,100
Property, plant and equipment, minimum cost capitalization | $	$ 1,000
Minimum [Member] | Furniture, Fixtures And Equipment [Member]
Summary Of Significant Accounting Policies [Line Items]
Property, plant and equipment, useful life	5 years
Minimum [Member] | Building [Member]
Summary Of Significant Accounting Policies [Line Items]
Property, plant and equipment, useful life	15 years
Maximum [Member] | Furniture, Fixtures And Equipment [Member]
Summary Of Significant Accounting Policies [Line Items]
Property, plant and equipment, useful life	7 years
Maximum [Member] | Building [Member]
Summary Of Significant Accounting Policies [Line Items]
Property, plant and equipment, useful life	39 years