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Accumulated Other Comprehensive Income (Loss) (Items Reclassified Out of Each Component of OCI) (Details) - USD ($)
$ in Thousands
 3 Months Ended 6 Months Ended
Jun. 30, 2017
Jun. 30, 2016
Jun. 30, 2017
Jun. 30, 2016
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]        
Net realized gains on sales of securities $ 31 $ 205 $ 37 $ 270
Income tax expense (858) (511) (1,409) (1,079)
NET INCOME 2,724 1,878 5,100 3,754
Amount Reclassified From Accumulated Other Comprehensive Income (Loss) [Member]        
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]        
Income tax expense [1] (11) (69) (13) (92)
NET INCOME [1] 20 136 24 178
Amount Reclassified From Accumulated Other Comprehensive Income (Loss) [Member] | Unrealized gains (losses) on available for sale securities [Member]        
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]        
Net realized gains on sales of securities [1] $ 31 $ 205 $ 37 $ 270
[1] Amounts in parentheses indicate debits to net income