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Long-Term Debt (Details)
3 Months Ended 6 Months Ended
Jun. 30, 2017
USD ($)
Mar. 31, 2017
Rate
Jun. 30, 2017
USD ($)
Jun. 30, 2016
USD ($)
Dec. 31, 2016
USD ($)
Dec. 05, 2016
USD ($)
Rate
May 26, 2016
USD ($)
Apr. 29, 2016
USD ($)
Debt Instrument                
Notes Payable $ 53,765,000   $ 53,765,000   $ 54,175,000      
Effective rate at period end 2.31%   2.31%          
Florida State Board of Administration Note Payable                
Debt Instrument                
Notes Payable $ 10,882,000   $ 10,882,000   $ 11,176,000      
Interest rate (percentage) 2.42%   2.42%   1.56%      
Statutory capital and surplus required $ 23,000,000   $ 23,000,000          
Capital contributed to surplus $ 20,000,000   20,000,000          
Debt Instrument, Periodic Payment, Principal     $ 294,000          
Debt Instrument, Periodic Payment, Interest       $ 70,000        
Florida State Board of Administration Note Payable | Gross and Net Writing Ratio | 10-Year Constant Maturity Treasury Rate                
Debt Instrument                
Basis spread on variable rate | Rate   4.50%            
Florida State Board of Administration Note Payable | Gross Writing Ratio                
Debt Instrument                
Required written premiums to surplus ratio     6          
Florida State Board of Administration Note Payable | Gross Writing Ratio | Minimum                
Debt Instrument                
Required written premiums to surplus ratio     4.5          
Florida State Board of Administration Note Payable | Net Writing Ratio                
Debt Instrument                
Required written premiums to surplus ratio     2          
Florida State Board of Administration Note Payable | Net Writing Ratio | Minimum                
Debt Instrument                
Required written premiums to surplus ratio     1.5          
Florida State Board of Administration Note Payable | Other Than Gross and Net Writing Ratio | Stated Rate                
Debt Instrument                
Basis spread on variable rate | Rate   0.25%            
Interboro, LLC Promissory Note                
Debt Instrument                
Notes Payable               $ 8,550,000
Interest rate (percentage) 6.00%   6.00%          
BB&T Term Note Payable                
Debt Instrument                
Notes Payable $ 4,824,000   $ 4,824,000   $ 4,998,000   $ 5,200,000  
Interest rate (percentage) 2.69%   2.69%       1.65%  
Debt Instrument, Periodic Payment, Principal $ 87,000   $ 173,000          
Debt Instrument, Periodic Payment, Interest 34,000     $ 64,000        
BB&T Term Note Payable | Minimum                
Debt Instrument                
Cash Flow Coverage Ratio     1.2          
Required Balance in Interest Bearing Account 1,500,000   $ 1,500,000          
Required Balance in Non-Interest Bearing Account 500,000   $ 500,000          
BB&T Term Note Payable | Non-recurring Loss | Minimum                
Debt Instrument                
Cash Flow Coverage Ratio     1.0          
Senior Notes                
Debt Instrument                
Notes Payable           $ 30,000,000    
Interest rate (percentage) | Rate           5.75%    
Debt Instrument, Periodic Payment, Interest $ 516,000   $ 998,000