Quarterly report pursuant to Section 13 or 15(d)

Commitments And Contingencies (Narrative I) (Details)

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Commitments And Contingencies (Narrative I) (Details) - USD ($)
3 Months Ended 12 Months Ended
Jan. 04, 2018
Mar. 31, 2018
Mar. 31, 2017
Dec. 31, 2015
Commitments And Contingencies [Line Items]        
Gain on judgment of court [1]     $ 9,606,000  
Lawsuit damages per violation $ 5,000      
Insurance [Member]        
Commitments And Contingencies [Line Items]        
Gain on judgment of court     5,000,000  
Release Of Penalty [Member]        
Commitments And Contingencies [Line Items]        
Gain on judgment of court     $ 4,600,000  
Bluegreen [Member]        
Commitments And Contingencies [Line Items]        
Average annual default rates   8.40%   6.90%
Percent of total delinquencies subject to letters   13.30%    
[1] See Note 1 for a summary of adjustments.