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FAIR VALUE (Available-for-Sale Financial Instruments Measured at Fair Value) (Details) - USD ($)
$ in Thousands
Mar. 31, 2022
Dec. 31, 2021
Investments, Debt and Equity Securities [Abstract]    
Debt securities, at fair value $ 270,217 $ 327,532
Equity securities, at fair value 5,348 5,905
Total investments, at fair value 275,565 333,437
Embedded Derivative Financial Instruments    
Investments, Debt and Equity Securities [Abstract]    
Other assets - embedded derivative, at fair value 10,448 10,725
United States government obligations and authorities    
Investments, Debt and Equity Securities [Abstract]    
Debt securities, at fair value 82,429 90,692
Obligations of states and political subdivisions    
Investments, Debt and Equity Securities [Abstract]    
Debt securities, at fair value 15,578 19,278
Corporate securities    
Investments, Debt and Equity Securities [Abstract]    
Debt securities, at fair value 149,608 188,980
International securities    
Investments, Debt and Equity Securities [Abstract]    
Debt securities, at fair value 22,602 28,582
Level 1    
Investments, Debt and Equity Securities [Abstract]    
Debt securities, at fair value 41,124 42,026
Equity securities, at fair value 1,652 1,879
Total investments, at fair value 42,776 43,905
Level 1 | Embedded Derivative Financial Instruments    
Investments, Debt and Equity Securities [Abstract]    
Other assets - embedded derivative, at fair value 0 0
Level 1 | United States government obligations and authorities    
Investments, Debt and Equity Securities [Abstract]    
Debt securities, at fair value 41,125 41,125
Level 1 | Obligations of states and political subdivisions    
Investments, Debt and Equity Securities [Abstract]    
Debt securities, at fair value (1) 0
Level 1 | Corporate securities    
Investments, Debt and Equity Securities [Abstract]    
Debt securities, at fair value 0 0
Level 1 | International securities    
Investments, Debt and Equity Securities [Abstract]    
Debt securities, at fair value 0 901
Level 2    
Investments, Debt and Equity Securities [Abstract]    
Debt securities, at fair value 229,093 285,506
Equity securities, at fair value 3,696 4,026
Total investments, at fair value 232,789 289,532
Level 2 | Embedded Derivative Financial Instruments    
Investments, Debt and Equity Securities [Abstract]    
Other assets - embedded derivative, at fair value 0 0
Level 2 | United States government obligations and authorities    
Investments, Debt and Equity Securities [Abstract]    
Debt securities, at fair value 41,304 49,567
Level 2 | Obligations of states and political subdivisions    
Investments, Debt and Equity Securities [Abstract]    
Debt securities, at fair value 15,579 19,278
Level 2 | Corporate securities    
Investments, Debt and Equity Securities [Abstract]    
Debt securities, at fair value 149,608 188,980
Level 2 | International securities    
Investments, Debt and Equity Securities [Abstract]    
Debt securities, at fair value 22,602 27,681
Level 3    
Investments, Debt and Equity Securities [Abstract]    
Debt securities, at fair value 0 0
Equity securities, at fair value 0 0
Total investments, at fair value 0 0
Level 3 | Embedded Derivative Financial Instruments    
Investments, Debt and Equity Securities [Abstract]    
Other assets - embedded derivative, at fair value 10,448 10,725
Level 3 | United States government obligations and authorities    
Investments, Debt and Equity Securities [Abstract]    
Debt securities, at fair value 0 0
Level 3 | Obligations of states and political subdivisions    
Investments, Debt and Equity Securities [Abstract]    
Debt securities, at fair value 0 0
Level 3 | Corporate securities    
Investments, Debt and Equity Securities [Abstract]    
Debt securities, at fair value 0 0
Level 3 | International securities    
Investments, Debt and Equity Securities [Abstract]    
Debt securities, at fair value $ 0 $ 0