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Notes Payable and Revolving Line of Credit - Concorde Real Estate - Additional Information (Details) - USD ($)
1 Months Ended 12 Months Ended
Jul. 31, 2013
May. 31, 2013
Dec. 31, 2015
Dec. 31, 2014
Dec. 31, 2012
Jun. 27, 2012
Line Of Credit Facility [Line Items]            
Debt instrument maturity date     Aug. 31, 2019      
Debt instrument interest rate       2.67%    
Long term debt     $ 147,090,000      
Concorde Real Estate            
Line Of Credit Facility [Line Items]            
Promissory note refinanced           $ 3,500,000
Loans for renovation           $ 7,400,000
Description on periodic payments of real estate     The first tranche totaled $4.4 million and bore interest at 3.0% plus one-month LIBOR, with interest payable monthly, and required a lump sum principal payment in July 2013. The second tranche totaled $3.0 million, bore interest at 2.0% plus the lender’s prime rate (3.25% at December 31, 2012), with interest payable monthly, and required a lump sum principal payment in July 2013      
Notes payable   $ 9,600,000        
Debt instrument maturity date     May 15, 2018      
Monthly principal payments   53,228        
Term loan balloon payment   $ 6,600,000        
Interest rate   2.50%        
Debt instrument, increase in variable rate   0.25%        
Debt instrument interest rate       2.67%    
Long term debt       $ 8,600,000    
Debt instrument, repayment date       Mar. 09, 2015    
Fixed coverage ratio agreement     fixed charge coverage ratio of not less than 1.25 to 1.00.      
Fixed charge coverage ratio     125.00%      
Concorde Real Estate | First Mortgage            
Line Of Credit Facility [Line Items]            
Tranche amount $ 4,400,000          
Interest rate 3.00%          
Concorde Real Estate | Second Tranche            
Line Of Credit Facility [Line Items]            
Tranche amount $ 3,000,000          
Interest rate 2.00%          
Concorde Real Estate | Second Tranche | Prime Rate            
Line Of Credit Facility [Line Items]            
Interest rate         3.25%