Fair Value (Carrying Amounts and Estimated Fair Values of Company's Financial Instruments) (Details) - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
Financial Assets:
Securities Held-to-Maturity	$ 95	$ 184
Loans, Net	1,549,909	1,433,053
FHLB Stock and Other Restricted Stock	8,571	7,040
Financial Liabilities:
Time Deposits	(306,036)	(333,425)
Short-term Borrowings	(177,717)	(141,473)
Long-term Debt	(95,606)	(64,591)
Reported Value Measurement
Financial Assets:
Cash and Short-term Investments	52,009	42,546
Securities Held-to-Maturity	95	184
Loans, Net	1,548,934	1,431,549
FHLB Stock and Other Restricted Stock	8,571	7,040
Accrued Interest Receivable	8,803	8,162
Financial Liabilities:
Demand, Savings, and Money Market Deposits	(1,520,340)	(1,446,336)
Time Deposits	(306,036)	(333,425)
Short-term Borrowings	(177,717)	(141,473)
Long-term Debt	(95,606)	(64,591)
Accrued Interest Payable	(676)	(754)
Estimate of Fair Value Measurement
Financial Assets:
Cash and Short-term Investments	52,009	42,546
Securities Held-to-Maturity	95	186
Loans, Net	1,551,497	1,432,622
Accrued Interest Receivable	8,803	8,162
Financial Liabilities:
Demand, Savings, and Money Market Deposits	(1,520,340)	(1,446,336)
Time Deposits	(305,965)	(335,134)
Short-term Borrowings	(177,717)	(141,473)
Long-term Debt	(96,011)	(65,718)
Accrued Interest Payable	(676)	(754)
Estimate of Fair Value Measurement | Level 1
Financial Assets:
Cash and Short-term Investments	36,062	33,481
Securities Held-to-Maturity	0	0
Loans, Net	0	0
Accrued Interest Receivable	0	0
Financial Liabilities:
Demand, Savings, and Money Market Deposits	(1,520,340)	(1,446,336)
Time Deposits	0	0
Short-term Borrowings	0	0
Long-term Debt	0	0
Accrued Interest Payable	0	0
Estimate of Fair Value Measurement | Level 2
Financial Assets:
Cash and Short-term Investments	15,947	9,065
Securities Held-to-Maturity	95	186
Loans, Net	0	0
Accrued Interest Receivable	2,722	2,240
Financial Liabilities:
Demand, Savings, and Money Market Deposits	0	0
Time Deposits	(305,965)	(335,134)
Short-term Borrowings	(177,717)	(141,473)
Long-term Debt	(90,473)	(60,289)
Accrued Interest Payable	(668)	(704)
Estimate of Fair Value Measurement | Level 3
Financial Assets:
Cash and Short-term Investments	0	0
Securities Held-to-Maturity	0	0
Loans, Net	1,551,497	1,432,622
Accrued Interest Receivable	6,081	5,922
Financial Liabilities:
Demand, Savings, and Money Market Deposits	0	0
Time Deposits	0	0
Short-term Borrowings	0	0
Long-term Debt	(5,538)	(5,429)
Accrued Interest Payable	$ (8)	$ (50)