Quarterly report pursuant to Section 13 or 15(d)

Debt (Receivable-Backed Notes Payable, Narrative) (Details)

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Debt (Receivable-Backed Notes Payable, Narrative) (Details) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Apr. 06, 2018
Mar. 31, 2018
Jun. 30, 2018
Dec. 31, 2017
Dec. 31, 2015
Debt Instrument [Line Items]          
Receivable backed notes payable - non-recourse     $ 325,512 $ 336,421 [1]  
Liberty Bank Facility [Member]          
Debt Instrument [Line Items]          
Interest rate     4.75% 5.00%  
Liberty Bank Facility [Member] | Bluegreen [Member]          
Debt Instrument [Line Items]          
Maximum borrowing capacity     $ 50,000    
Future advance rate percent   0.50%      
Liberty Bank Facility [Member] | Minimum [Member] | Bluegreen [Member]          
Debt Instrument [Line Items]          
Interest rate   4.00%      
Quorum Purchase Facility [Member]          
Debt Instrument [Line Items]          
Receivable backed notes payable - non-recourse     29,743 $ 16,771  
Quorum Purchase Facility [Member] | Bluegreen [Member]          
Debt Instrument [Line Items]          
Maximum borrowing capacity     $ 50,000    
Gross advance rate         85.00%
Effective yield rate     4.95%    
Loan application fee, percent 0.25%   0.50%    
Quorum Purchase Facility [Member] | Minimum [Member]          
Debt Instrument [Line Items]          
Interest rate     4.75% 4.75%  
Quorum Purchase Facility [Member] | Interest Rate Per Annum 5.5% [Member] | Bluegreen [Member]          
Debt Instrument [Line Items]          
Receivable backed notes payable - non-recourse     $ 2,400    
Effective yield rate     5.50%    
Quorum Purchase Facility [Member] | Interest Rate Per Annum 4.95% [Member] | Bluegreen [Member]          
Debt Instrument [Line Items]          
Receivable backed notes payable - non-recourse     $ 18,900    
Effective yield rate     4.95%    
Quorum Purchase Facility [Member] | Interest Rate Per Annum 5.0% [Member] | Bluegreen [Member]          
Debt Instrument [Line Items]          
Receivable backed notes payable - non-recourse     $ 2,900    
Effective yield rate     5.00%    
Quorum Purchase Facility [Member] | Interest Rate Per Annum 4.75% [Member] | Bluegreen [Member]          
Debt Instrument [Line Items]          
Receivable backed notes payable - non-recourse     $ 5,500    
Effective yield rate     4.75%    
Qualified Timeshare Loans [Member] | Liberty Bank Facility [Member] | Bluegreen [Member]          
Debt Instrument [Line Items]          
Future advance rate percent     85.00%    
Non-Conforming Qualified Timeshare Loans [Member] | Liberty Bank Facility [Member] | Bluegreen [Member]          
Debt Instrument [Line Items]          
Future advance rate percent     60.00%    
[1] See Note 1 for a summary of adjustments.