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Accumulated Other Comprehensive Loss (Details 1) - USD ($)
$ in Thousands
 3 Months Ended
Mar. 31, 2019
Mar. 31, 2018
Unrealized gains and losses on sale of securities    
Net realized loss on investment securities $ 0 $ (148)
Provision for income tax expense 0 31
Net of tax 0 117 [1]
Amortization of defined benefit items    
Other expense 366 390 [1]
Provision for income tax expense (77) (82) [1]
Net of tax 289 308 [1]
Total reclassifications for the period [2] $ 289 $ 425 [1]
[1] Amounts in parentheses indicate credits.
[2] Amounts in parentheses indicate debits on the Consolidated Balance Sheets.