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Accumulated Other Comprehensive Loss ("AOCL") (Components of Comprehensive Income) (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2018
Dec. 31, 2017
Available for sale securities - all other: Net unrealized losses on all other AFS securities, Net of tax $ (622) $ 674
Cash flow hedges: Unrealized holding gains, Before Tax 262  
Cash flow hedges: Unrealized holding gains, Tax Effect (71)  
Cash flow hedges: Unrealized holding gains, Net of Tax 191 59
Cash flow hedges: Net unrealized gains, Before Tax 262  
Cash flow hedges: Net unrealized gains, Tax Effect 71  
Cash flow hedges: Net unrealized gains, Net of Tax 191  
Unrealized net actuarial gain (loss), Net of Tax (951) 336
Other Comprehensive Income, Before Tax Amount 259 1,717
Other Comprehensive Income, Tax (Expense) Benefit (69) (462)
Other Comprehensive Income, Net 190 1,255
Investment securities- with OTTI [Member]    
Available for sale (AFS) securities with OTTI: Unrealized holding gains, Before Tax Amount 1,638 42
Available for sale (AFS) securities with OTTI: Unrealized holding gains, tax effect (444) (11)
Available for sale (AFS) securities with OTTI: Unrealized holding gains, Net of Tax 1,194 31
Available for sale (AFS) securities with OTTI: Less: accretable yield recognized in income, Before Tax Amount 211 166
Available for sale (AFS) securities with OTTI: Less: accretable yield recognized in income, Tax Effect (57) (45)
Available for sale (AFS) securities with OTTI: Less: accretable yield recognized in income, Net of Tax 154 121
Available for sale (AFS) securities with OTTI: Net unrealized gains on investments with OTTI: Net unrealized gains on investments with OTTI, Tax Effect (387) 34
Available for sale (AFS) securities with OTTI: Net unrealized gains on investments with OTTI, Before Tax Amount 1,427 (124)
Available for sale (AFS) securities with OTTI: Net unrealized gains on investments with OTTI, Net of Tax 1,040 (90)
Investment Securities -All Other AFS [Member]    
Securities: Unrealized holding gains (losses), Before Tax (741) 874
Securities: Unrealized holding gains (losses), Tax Effect 201 (236)
Securities: Unrealized holding gains (losses), Net of Tax (540) 638
Securities: Less: gains (losses) recognized in income, Before Tax 113 (49)
Securities: Less: gains (losses) recognized in income, Tax Effect (31) 13
Securities: Less: gains (losses) recognized in income, Net of Tax 82 (36)
Available for sale securities - all other: Net unrealized losses on all other AFS securities, Before Tax (854) 923
Available for sale securities - all other: Net unrealized losses on all other AFS securities, Tax Effect 232 (249)
Available for sale securities - all other: Net unrealized losses on all other AFS securities, Net of tax (622) 674
Investment Securities HTM [Member]    
Securities: Unrealized holding gains (losses), Before Tax 0 0
Securities: Unrealized holding gains (losses), Tax Effect 0 0
Securities: Unrealized holding gains (losses), Net of Tax 0 0
Securities: Less: gains (losses) recognized in income, Before Tax (296) (346)
Securities: Less: gains (losses) recognized in income, Tax Effect 80 93
Securities: Less: gains (losses) recognized in income, Net of Tax (216) (253)
Held to maturity securities: Net unrealized gains (losses) on all HTM securities, Before tax 296 346
Held to maturity securities: Net unrealized gains (losses) on all HTM securities, Tax (80) (93)
Held to maturity securities: Net unrealized gains (losses) on all HTM securities, After tax 216 253
Cash Flow Hedge (OCI) [Member]    
Cash flow hedges: Unrealized holding gains, Before Tax   81
Cash flow hedges: Unrealized holding gains, Tax Effect   (22)
Cash flow hedges: Unrealized holding gains, Net of Tax   59
Cash flow hedges: Net unrealized gains, Before Tax   81
Cash flow hedges: Net unrealized gains, Tax Effect   (22)
Cash flow hedges: Net unrealized gains, Net of Tax   59
Pension Plan [Member]    
Unrealized net actuarial gain (loss), Before Tax (2,514) (609)
Unrealized net actuarial gain (loss), Tax Effect 681 164
Unrealized net actuarial gain (loss), Net of Tax (1,833) (445)
Less: amortization of unrecognized net gain (loss), Before Tax (1,200) (1,057)
Less: amortization of unrecognized net gain (loss), Tax Effect 325 285
Less: amortization of unrecognized net gain (loss), Net of Tax (875) (772)
Less: amortization of prior service costs, Before Tax (9) (12)
Less: amortization of prior service costs, Tax Effect 2 3
Less: amortization of prior service costs, Net of Tax (7) (9)
Net plan liability adjustment, Before Tax (1,305) 460
Net plan liability adjustment, Tax Effect 354 (124)
Net plan liability adjustment, Net of Tax (951) 336
SERP [Member]    
Unrealized net actuarial gain (loss), Before Tax 277 (112)
Unrealized net actuarial gain (loss), Tax Effect (75) 30
Unrealized net actuarial gain (loss), Net of Tax 202 (82)
Less: amortization of unrecognized net gain (loss), Before Tax (159) (146)
Less: amortization of unrecognized net gain (loss), Tax Effect 43 39
Less: amortization of unrecognized net gain (loss), Net of Tax (116) (107)
Less: amortization of prior service costs, Before Tax 3 3
Less: amortization of prior service costs, Tax Effect (1) (1)
Less: amortization of prior service costs, Net of Tax 2 2
Net plan liability adjustment, Before Tax 433 31
Net plan liability adjustment, Tax Effect (117) (8)
Net plan liability adjustment, Net of Tax $ 316 $ 23