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Investments (Details 4) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Jun. 30, 2016
Jun. 30, 2015
Jun. 30, 2016
Jun. 30, 2015
Investment income from portfolios        
Total investment income $ 5,226 $ 4,671 $ 10,111 $ 9,304
Less: investment expenses 335 236 558 328
Net investment income 4,891 4,435 9,553 8,976
Fixed maturities        
Investment income from portfolios        
Total investment income 4,858 4,150 9,384 8,229
Equity securities        
Investment income from portfolios        
Total investment income 47 240 82 500
Cash equivalents and other        
Investment income from portfolios        
Total investment income $ 321 $ 281 $ 645 $ 575