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Other Comprehensive Income (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2018
Dec. 31, 2017
Pre-Tax Amount [Member]    
Schedule Of Other Comprehesive Income [Line Items]    
Unrealized Net Holding Gain (Loss) On All Other Securitiies $ (4,269) $ 417
Reclassification adjustment for loss (gain) on securities recognized in earnings 0 (51)
Other Comprehensive Income (Loss) (4,269) 366
Tax Benefit (Expense) [Member]    
Schedule Of Other Comprehesive Income [Line Items]    
Unrealized Net Holding Gain (Loss) On All Other Securitiies 1,072 (154)
Reclassification adjustment for loss (gain) on securities recognized in earnings 0 19
Other Comprehensive Income (Loss) 1,072 (135)
Net Of Tax Amount [Member]    
Schedule Of Other Comprehesive Income [Line Items]    
Unrealized Net Holding Gain (Loss) On All Other Securitiies (3,197) 263
Reclassification adjustment for loss (gain) on securities recognized in earnings 0 (32)
Other Comprehensive Income (Loss) $ (3,197) $ 231