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Held to Maturity Securities (Details 1) - USD ($)
$ in Thousands
Sep. 30, 2018
Dec. 31, 2017
Amortized Cost    
Within 1 year $ 0 $ 252
After 1 but within 5 years 0 576
After 5 but within 10 years 0 0
After 10 years 0 754
Other 0 332
Total   1,914
Fair Value    
Within 1 year 0 252
After 1 but within 5 years 0 575
After 5 but within 10 years 0 0
After 10 years 0 769
Other 0 332
Total $ 0 $ 1,928