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Investment Securities (Schedule of Fair Value and Unrealized Loss on Investments in a Continuous Unrealized Loss Position) (Details)
$ in Thousands
Dec. 31, 2018
USD ($)
security
Dec. 31, 2017
USD ($)
security
Schedule of Investments [Line Items]    
Available-for-sale securities, Less than 12 Months: Number of Securities | security 16 18
Available-for-sale securities, Less than 12 Months: Fair Value $ 20,487 $ 16,419
Available-for-sale securities, Less than 12 Months: Unrealized Losses $ 190 $ 361
Available-for-sale securities, 12 Months or More: Number of Securities | security 91 74
Available-for-sale securities, 12 Months or More: Fair Value $ 84,999 $ 73,816
Available-for-sale securities, 12 Months or More: Unrealized Losses $ 3,935 $ 2,386
Available-for-sale securities, Total: Number of Securities | security 107 92
Available-for-sale securities, Total: Fair Value $ 105,486 $ 90,235
Available-for-sale securities, Total: Unrealized Losses $ 4,125 $ 2,747
Held-to-maturity securities, Less than 12 Months: Number of Securities | security 38 0
Held-to-maturity securities, Less than 12 Months: Fair Value $ 31,000  
Held-to-maturity securities, Less than 12 Months: Unrealized Losses $ 210  
Held-to-maturity securities, 12 Months or More: Number of Securities | security 115 116
Held-to-maturity securities, 12 Months or More: Fair Value $ 80,743 $ 93,819
Held-to-maturity securities, 12 Months or More: Unrealized Losses $ 2,095 $ 914
Held-to-maturity securities, Total: Number of Securities | security 153 116
Held-to-maturity securities, Total: Fair Value $ 111,743 $ 93,819
Held-to-maturity securities, Total: Unrealized Losses $ 2,305 $ 914
Available-for-sale securities and Held-to-maturity securities, Less than 12 Months: Number of Securities | security 54 18
Available-for-sale securities and Held-to-maturity securities, Less than 12 Months: Fair Value $ 51,487 $ 16,419
Available-for-sale securities and Held-to-maturity securities, Less than 12 Months: Unrealized Losses $ 400 $ 361
Available-for-sale securities and Held-to-maturity securities,, 12 Months or More: Number of Securities | security 206 190
Available-for-sale securities and Held-to-maturity securities, 12 Months or More: Fair Value $ 165,742 $ 167,635
Available-for-sale securities and Held-to-maturity securities, 12 Months or More: Unrealized Losses $ 6,030 $ 3,300
Available-for-sale securities and Held-to-maturity securities, Total: Number of Securities | security 260 208
Available-for-sale securities and Held-to-maturity securities, Total: Fair Value $ 217,229 $ 184,054
Available-for-sale securities and Held-to-maturity securities, Total: Unrealized Losses $ 6,430 $ 3,661
U.S. Treasury and U.S. government agencies [Member]    
Schedule of Investments [Line Items]    
Available-for-sale securities, Less than 12 Months: Number of Securities | security 0 3
Available-for-sale securities, Less than 12 Months: Fair Value   $ 5,008
Available-for-sale securities, Less than 12 Months: Unrealized Losses   $ 184
Available-for-sale securities, 12 Months or More: Number of Securities | security 21 18
Available-for-sale securities, 12 Months or More: Fair Value $ 38,386 $ 33,722
Available-for-sale securities, 12 Months or More: Unrealized Losses $ 1,708 $ 1,211
Available-for-sale securities, Total: Number of Securities | security 21 21
Available-for-sale securities, Total: Fair Value $ 38,386 $ 38,730
Available-for-sale securities, Total: Unrealized Losses $ 1,708 $ 1,395
Held-to-maturity securities, Less than 12 Months: Number of Securities | security 1 0
Held-to-maturity securities, Less than 12 Months: Fair Value $ 1,985  
Held-to-maturity securities, Less than 12 Months: Unrealized Losses $ 10  
Held-to-maturity securities, 12 Months or More: Number of Securities | security 3 4
Held-to-maturity securities, 12 Months or More: Fair Value $ 8,852 $ 10,894
Held-to-maturity securities, 12 Months or More: Unrealized Losses $ 133 $ 90
Held-to-maturity securities, Total: Number of Securities | security 4 4
Held-to-maturity securities, Total: Fair Value $ 10,837 $ 10,894
Held-to-maturity securities, Total: Unrealized Losses $ 143 $ 90
Mortgage-backed U.S. Government Agencies [Member]    
Schedule of Investments [Line Items]    
Available-for-sale securities, Less than 12 Months: Number of Securities | security 11 4
Available-for-sale securities, Less than 12 Months: Fair Value $ 16,740 $ 5,267
Available-for-sale securities, Less than 12 Months: Unrealized Losses $ 163 $ 75
Available-for-sale securities, 12 Months or More: Number of Securities | security 19 15
Available-for-sale securities, 12 Months or More: Fair Value $ 22,093 $ 20,497
Available-for-sale securities, 12 Months or More: Unrealized Losses $ 853 $ 494
Available-for-sale securities, Total: Number of Securities | security 30 19
Available-for-sale securities, Total: Fair Value $ 38,833 $ 25,764
Available-for-sale securities, Total: Unrealized Losses $ 1,016 $ 569
Held-to-maturity securities, Less than 12 Months: Number of Securities | security 10 0
Held-to-maturity securities, Less than 12 Months: Fair Value $ 16,165  
Held-to-maturity securities, Less than 12 Months: Unrealized Losses $ 79  
Held-to-maturity securities, 12 Months or More: Number of Securities | security 35 35
Held-to-maturity securities, 12 Months or More: Fair Value $ 42,431 $ 52,949
Held-to-maturity securities, 12 Months or More: Unrealized Losses $ 1,231 $ 523
Held-to-maturity securities, Total: Number of Securities | security 45 35
Held-to-maturity securities, Total: Fair Value $ 58,596 $ 52,949
Held-to-maturity securities, Total: Unrealized Losses $ 1,310 $ 523
State and political subdivision obligations [Member]    
Schedule of Investments [Line Items]    
Available-for-sale securities, Less than 12 Months: Number of Securities | security 3 11
Available-for-sale securities, Less than 12 Months: Fair Value $ 1,751 $ 6,144
Available-for-sale securities, Less than 12 Months: Unrealized Losses $ 23 $ 102
Available-for-sale securities, 12 Months or More: Number of Securities | security 51 40
Available-for-sale securities, 12 Months or More: Fair Value $ 24,520 $ 19,091
Available-for-sale securities, 12 Months or More: Unrealized Losses $ 1,374 $ 637
Available-for-sale securities, Total: Number of Securities | security 54 51
Available-for-sale securities, Total: Fair Value $ 26,271 $ 25,235
Available-for-sale securities, Total: Unrealized Losses $ 1,397 $ 739
Held-to-maturity securities, Less than 12 Months: Number of Securities | security 26 0
Held-to-maturity securities, Less than 12 Months: Fair Value $ 11,321  
Held-to-maturity securities, Less than 12 Months: Unrealized Losses $ 111  
Held-to-maturity securities, 12 Months or More: Number of Securities | security 77 77
Held-to-maturity securities, 12 Months or More: Fair Value $ 29,460 $ 29,976
Held-to-maturity securities, 12 Months or More: Unrealized Losses $ 731 $ 301
Held-to-maturity securities, Total: Number of Securities | security 103 77
Held-to-maturity securities, Total: Fair Value $ 40,781 $ 29,976
Held-to-maturity securities, Total: Unrealized Losses $ 842 $ 301
Corporate debt securities [Member]    
Schedule of Investments [Line Items]    
Available-for-sale securities, Less than 12 Months: Number of Securities | security 2 0
Available-for-sale securities, Less than 12 Months: Fair Value $ 1,996  
Available-for-sale securities, Less than 12 Months: Unrealized Losses $ 4  
Available-for-sale securities, 12 Months or More: Number of Securities | security 0 0
Available-for-sale securities, Total: Number of Securities | security 2 0
Available-for-sale securities, Total: Fair Value $ 1,996  
Available-for-sale securities, Total: Unrealized Losses $ 4  
Held-to-maturity securities, Less than 12 Months: Number of Securities | security 1  
Held-to-maturity securities, Less than 12 Months: Fair Value $ 1,529  
Held-to-maturity securities, Less than 12 Months: Unrealized Losses $ 10  
Held-to-maturity securities, 12 Months or More: Number of Securities | security 0  
Held-to-maturity securities, Total: Number of Securities | security 1  
Held-to-maturity securities, Total: Fair Value $ 1,529  
Held-to-maturity securities, Total: Unrealized Losses $ 10  
Equity Securities [Member]    
Schedule of Investments [Line Items]    
Available-for-sale securities, Less than 12 Months: Number of Securities | security   0
Available-for-sale securities, 12 Months or More: Number of Securities | security   1
Available-for-sale securities, 12 Months or More: Fair Value   $ 506
Available-for-sale securities, 12 Months or More: Unrealized Losses   $ 44
Available-for-sale securities, Total: Number of Securities | security   1
Available-for-sale securities, Total: Fair Value   $ 506
Available-for-sale securities, Total: Unrealized Losses   $ 44