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Note 4 - Indian Casino Projects (Details Textual) - USD ($)
shares in Millions
1 Months Ended 3 Months Ended 12 Months Ended
Dec. 09, 2015
Aug. 31, 2013
Dec. 31, 2015
Sep. 30, 2013
Dec. 31, 2015
Dec. 28, 2014
Dec. 29, 2013
Dec. 08, 2015
Aug. 29, 2013
Shingle Springs Tribe [Member]                  
Proceeds from Collection of Loans Receivable   $ 57,100,000              
Notes, Loans and Financing Receivable, Gross, Current                 $ 69,700,000
Notes Receivable, Fair Value Disclosure                 $ 39,700,000
Allowance for Doubtful Accounts Receivable, Recoveries       $ 17,400,000          
Penn National [Member]                  
Financing Receivable, Gross               $ 60,000,000  
Proceeds from Sale of Notes Receivable $ 24,000,000                
Jamul Tribe [Member]                  
Notes Receivable, Fair Value Disclosure           $ 0      
Sartini Trust [Member]                  
Shares Restricted from Distribution 8.0                
To Holders of Warrants [Member]                  
Shares Restricted from Distribution 0.5                
Allowance for Doubtful Accounts Receivable, Recoveries     $ 23,600,000   $ 23,590,000 $ 17,382,000