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Investments, Fair Value Measured on a Recurring Basis (Details) - Recurring [Member] - USD ($)
$ in Thousands
Dec. 31, 2016
Dec. 31, 2015
Financial instruments carried at fair value measured on a recurring basis [Abstract]    
Assets at fair value $ 240,738 $ 242,227
Fixed Maturities [Member]    
Financial instruments carried at fair value measured on a recurring basis [Abstract]    
Assets at fair value 210,670 205,324
Equity Securities [Member]    
Financial instruments carried at fair value measured on a recurring basis [Abstract]    
Assets at fair value 20,257 23,131
Cash Equivalents [Member]    
Financial instruments carried at fair value measured on a recurring basis [Abstract]    
Assets at fair value 9,811 13,772
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]    
Financial instruments carried at fair value measured on a recurring basis [Abstract]    
Assets at fair value 24,964 32,017
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | Fixed Maturities [Member]    
Financial instruments carried at fair value measured on a recurring basis [Abstract]    
Assets at fair value 0 0
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | Equity Securities [Member]    
Financial instruments carried at fair value measured on a recurring basis [Abstract]    
Assets at fair value 15,153 18,245
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | Cash Equivalents [Member]    
Financial instruments carried at fair value measured on a recurring basis [Abstract]    
Assets at fair value 9,811 13,772
Significant Other Observable Inputs (Level 2) [Member]    
Financial instruments carried at fair value measured on a recurring basis [Abstract]    
Assets at fair value 214,510 207,973
Significant Other Observable Inputs (Level 2) [Member] | Fixed Maturities [Member]    
Financial instruments carried at fair value measured on a recurring basis [Abstract]    
Assets at fair value 209,406 203,087
Significant Other Observable Inputs (Level 2) [Member] | Equity Securities [Member]    
Financial instruments carried at fair value measured on a recurring basis [Abstract]    
Assets at fair value [1] 5,104 4,886
Significant Other Observable Inputs (Level 2) [Member] | Cash Equivalents [Member]    
Financial instruments carried at fair value measured on a recurring basis [Abstract]    
Assets at fair value 0 0
Significant Unobservable Inputs (Level 3) [Member]    
Financial instruments carried at fair value measured on a recurring basis [Abstract]    
Assets at fair value 1,264 2,237
Significant Unobservable Inputs (Level 3) [Member] | Fixed Maturities [Member]    
Financial instruments carried at fair value measured on a recurring basis [Abstract]    
Assets at fair value [1] 1,264 2,237
Significant Unobservable Inputs (Level 3) [Member] | Equity Securities [Member]    
Financial instruments carried at fair value measured on a recurring basis [Abstract]    
Assets at fair value 0 0
Significant Unobservable Inputs (Level 3) [Member] | Cash Equivalents [Member]    
Financial instruments carried at fair value measured on a recurring basis [Abstract]    
Assets at fair value $ 0 $ 0
[1] All underlying securities are financial service industry related.