Quarterly report pursuant to Section 13 or 15(d)

COMMITMENTS AND CONTINGENCIES (Details)

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COMMITMENTS AND CONTINGENCIES (Details)
 1 Months Ended 9 Months Ended 12 Months Ended
Jan. 01, 2018
USD ($)
Jul. 31, 2018
USD ($)
a
extension
Jun. 30, 2018
USD ($)
Nov. 30, 2017
USD ($)
Jun. 30, 2017
USD ($)
square_feet
Sep. 30, 2018
USD ($)
option
Dec. 31, 2017
USD ($)
Dec. 31, 2004
USD ($)
a
Various Buildings And Land In Cripple Creak, Colorado                
Commitments and Contingencies [Line Items]                
Capitalized costs       $ 200,000        
La Posada del Llano Racetrack                
Commitments and Contingencies [Line Items]                
Cost to purchase options   $ 125,000            
Land in purchase option (in acres) | a   520            
Silver Slipper Casino | Land lease                
Commitments and Contingencies [Line Items]                
Cost to exercise purchase option               $ 15,500,000
Lease includes base payments               $ 77,500
Percentage of gross gaming revenue               3.00%
Gross gaming revenue (in excess of)               $ 3,650,000
Rent expense           $ 1,200,000    
Retained interest in percentages of net income               3.00%
Retained interest in percentages of net income, term               10 years
New purchase price if change in ownership of Silver Slipper               $ 17,100,000
Silver Slipper Casino | Land lease | Marshland                
Commitments and Contingencies [Line Items]                
Area of land subject to ground lease | a               31
Silver Slipper Casino | Land lease | Parcel                
Commitments and Contingencies [Line Items]                
Area of land subject to ground lease | a               7
Grand Lodge Casino facility                
Commitments and Contingencies [Line Items]                
Lease includes base payments $ 166,667           $ 145,833  
EBITDA measurement period           12 months    
Corporate Office Lease                
Commitments and Contingencies [Line Items]                
Lease includes base payments         $ 200,000      
Office lease, square feet | square_feet         4,479      
Land, Buildings and Improvements | Various Buildings And Land In Cripple Creak, Colorado                
Commitments and Contingencies [Line Items]                
Cost to exercise purchase option       2,500,000        
Annual increase to purchase price option       100,000        
Maximum purchase price on purchase option       2,800,000        
Option to purchase land with a hotel       1,700,000        
Option to purchase land with a residence       $ 300,000        
Land, Buildings and Improvements | Various Buildings And Land In Cripple Creak, Colorado | Lease Terms, Option One                
Commitments and Contingencies [Line Items]                
Term of contract if exercised       3 years        
Annual lease payments       $ 200,000        
Land, Buildings and Improvements | Various Buildings And Land In Cripple Creak, Colorado | Lease Terms, Option Two                
Commitments and Contingencies [Line Items]                
Annual lease payments       $ 300,000        
Lease extension term       2 years        
Parking Lot                
Commitments and Contingencies [Line Items]                
Land purchase options exercised     $ 1,200,000          
Certain parking lots and buildings | Bronco Billy's Casino and Hotel                
Commitments and Contingencies [Line Items]                
Lease extension term           3 years    
Cost to exercise purchase option           $ 7,600,000    
Lease includes base payments             $ 18,500  
Number of renewal options | option           6    
Certain parking lots and buildings | Bronco Billy's Casino and Hotel | Lease Terms, Option One                
Commitments and Contingencies [Line Items]                
Lease includes base payments           $ 25,000    
Certain parking lots and buildings | Bronco Billy's Casino and Hotel | Lease Terms, Option Two                
Commitments and Contingencies [Line Items]                
Lease includes base payments           $ 30,000    
Option To Purchase, Option One | La Posada del Llano Racetrack                
Commitments and Contingencies [Line Items]                
Cost to exercise purchase option   $ 1,400,000            
Cost to purchase options   $ 75,000            
Land in purchase option (in acres) | a   200            
Period following granting of license award   60 days            
Number of additional extensions | extension   1            
Extension option costs   $ 75,000            
Option To Purchase, Option Two | La Posada del Llano Racetrack                
Commitments and Contingencies [Line Items]                
Cost to exercise purchase option   1,600,000            
Cost to purchase options   $ 50,000            
Land in purchase option (in acres) | a   320            
Period following granting of license award   60 days            
Number of additional extensions | extension   1            
Extension option costs   $ 50,000