Annual report pursuant to Section 13 and 15(d)

Debt (Lines-Of-Credit and Notes Payable, Narrative) (Details)

v3.20.1
Debt (Lines-Of-Credit and Notes Payable, Narrative) (Details) - USD ($)
1 Months Ended 12 Months Ended
Apr. 17, 2018
Oct. 31, 2019
Sep. 30, 2019
Apr. 30, 2018
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Apr. 30, 2019
Dec. 31, 2016
Mar. 31, 2013
Debt Instrument [Line Items]                    
Proceeds from borrowings under line-of-credit facilities and notes payable         $ 99,292,000 $ 51,736,000 $ 36,426,000      
Availablility of line of credits/credit facilities         220,200,000          
2013 Notes Payable [Member]                    
Debt Instrument [Line Items]                    
Written off unamortized debt issuance costs     $ 400,000              
Debt instrument, face amount                   $ 75,000,000.0
Non-revolving term loan           28,125,000        
NBA Eilan Loan [Member]                    
Debt Instrument [Line Items]                    
Debt instrument, face amount         18,800,000     $ 400,000    
Maximum borrowing capacity $ 27,500,000                  
Proceeds from borrowings under line-of-credit facilities and notes payable 24,300,000                  
Fund for improvement costs $ 1,700,000                  
Non-revolving term loan         18,820,000 25,603,000        
NBA Eilan Loan [Member] | LIBOR [Member] | Minimum [Member]                    
Debt Instrument [Line Items]                    
Basis spread on rate 3.25%                  
Effective rate 4.75%                  
Fifth Third Syndicated Line-of-Credit And Fifth Third Syndicated Term Loan [Member]                    
Debt Instrument [Line Items]                    
Maximum borrowing capacity                 $ 100,000,000.0  
Non-revolving term loan         128,800,000          
Fifth Third Syndicated Line-of-Credit And Fifth Third Syndicated Term Loan [Member] | Term Loans [Member]                    
Debt Instrument [Line Items]                    
Debt instrument, face amount   $ 100,000,000.0     98,800,000          
Fifth Third Syndicated Line-of-Credit And Fifth Third Syndicated Term Loan [Member] | Revolving Credit Facility [Member]                    
Debt Instrument [Line Items]                    
Maximum borrowing capacity   225,000,000.0                
Current borrowing capacity   125,000,000.0                
Line of credit, outstanding   $ 30,000,000.0     30,000,000.0          
Fifth Third Syndicated Line-of-Credit And Fifth Third Syndicated Term Loan [Member] | Revolving Credit Facility [Member] | LIBOR [Member] | Minimum [Member]                    
Debt Instrument [Line Items]                    
Basis spread on rate   2.00%                
Fifth Third Syndicated Line-of-Credit And Fifth Third Syndicated Term Loan [Member] | Revolving Credit Facility [Member] | LIBOR [Member] | Maximum [Member]                    
Debt Instrument [Line Items]                    
Basis spread on rate   2.50%                
Fifth Third Syndicated LOC [Member]                    
Debt Instrument [Line Items]                    
Non-revolving term loan         30,000,000 $ 55,000,000        
Fifth Third Syndicated LOC [Member] | Revolving Credit Facility [Member]                    
Debt Instrument [Line Items]                    
Repayment of credit facility   $ 3,600,000                
NBA Receivables Facility [Member]                    
Debt Instrument [Line Items]                    
Maximum borrowing capacity         $ 70,000,000          
NBA Receivables Facility [Member] | Minimum [Member]                    
Debt Instrument [Line Items]                    
Effective rate         3.50%          
The Eilan Hotel And Spa [Member]                    
Debt Instrument [Line Items]                    
Purchase consideration       $ 34,300,000