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Long-term Subordinated Debentures (Details)
$ / shares in Units, $ in Millions
12 Months Ended
Dec. 31, 2018
USD ($)
$ / shares
Subordinated Debentures [Abstract]  
Guaranteed preferred beneficial interests $ 10.0
Liquidation value (per capital security) | $ / shares $ 1,000
Junior Subordinated Debentures [Member]  
Subordinated Debentures [Abstract]  
Junior subordinated debentures $ 10.3
Debt instrument, maturity date Dec. 17, 2033
Junior Subordinated Debentures [Member] | LIBOR [Member]  
Subordinated Debentures [Abstract]  
Term of variable rate 3 months
Basis spread on variable rate 2.85%