Investments (Details Textual) (USD $)
3 Months Ended 6 Months Ended
Jun. 30, 2012
Securities
Jun. 30, 2011
Jun. 30, 2012
Securities
Jun. 30, 2011
Dec. 31, 2011
Securities
Investments (Textual) [Abstract]          
Number of fixed maturities and equity securities below cost 65   65   85
Investments (Additional Textual) [Abstract]          
Decline in fair value as a percentage of amortized cost     10.00%    
Number of Non Domestic Agency mortgage-backed securities identify by company 17   17   17
Time frame for initial default rates assumed to remain constant     24 months    
Allowance for potential future losses $ (2,517,000)   $ (2,517,000)   $ (2,849,000)
Percentage of invested assets in commercial mortgage loans 16.00%   16.00%   17.00%
Average loan to value ratio for overall portfolio 45.00%   45.00%   46.00%
Loans refinanced 4,000,000 1,900,000 8,600,000 9,700,000  
Maximum period of commits to fund commercial mortgage loans     120 days    
Construction to permanent loan 2,800,000   2,800,000    
Construction to permanent loan disbursed $ 2,500,000   $ 2,500,000    
Percentage of concentration of mortgage loans by state 5.00%   5.00%   5.00%
Less Than One Year [Member]
         
Investments (Textual) [Abstract]          
Number of fixed maturities and equity securities below cost 30   30   46
One Year Or More And Less Than Three Years [Member]
         
Investments (Textual) [Abstract]          
Number of fixed maturities and equity securities below cost 6   6   10
Three Years Or More [Member]
         
Investments (Textual) [Abstract]          
Number of fixed maturities and equity securities below cost 29   29   29
Maximum [Member]
         
Investments (Textual) [Abstract]          
Percentage declines of all investments in fair value below amortized cost     80.00%    
Minimum [Member]
         
Investments (Textual) [Abstract]          
Percentage declines of all investments in fair value below amortized cost     10.00%