Fair Value Of Financial Instruments - Estimated Fair Values Of Financial Instruments (Details) - USD ($) $ in Thousands	Sep. 30, 2016	Dec. 31, 2015
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale	$ 91,630	$ 93,776
Securities held to maturity	6,863	7,008
Carrying Amount [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash and cash equivalents	12,410	6,120
Time deposits with other banks	100	100
Securities available for sale	91,630	93,776
Securities held to maturity	6,628	6,834
Federal Home Loan Bank stock	5,633	5,165
Loans receivable, net of allowance	656,927	537,833
Accrued interest receivable	1,797	1,764
Non-maturity deposits	446,559	380,983
Time deposits	178,362	136,873
Short-term borrowings	36,500	34,650
Long-term borrowings	71,000	61,000
Junior subordinated debentures	12,887	12,887
Accrued interest payable	330	281
Interest rate swaps	(1,359)
Fair Value [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash and cash equivalents	12,410	6,120
Time deposits with other banks	100	100
Securities available for sale	91,630	93,776
Securities held to maturity	6,863	7,008
Federal Home Loan Bank stock	5,633	5,165
Loans receivable, net of allowance	655,302	528,065
Accrued interest receivable	1,797	1,764
Non-maturity deposits	446,559	380,983
Time deposits	178,558	136,619
Short-term borrowings	36,500	34,650
Long-term borrowings	72,063	58,685
Junior subordinated debentures	11,580	9,344
Accrued interest payable	330	281
Interest rate swaps	(1,359)
Quoted Prices In Active Markets For Identical Assets (Level I) [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash and cash equivalents	12,410	6,120
Short-term borrowings	36,500	34,650
Significant Other Observable Inputs (Level II) [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Time deposits with other banks	100	100
Securities available for sale	91,630	93,776
Securities held to maturity	6,863	7,008
Federal Home Loan Bank stock	5,633	5,165
Accrued interest receivable	1,797	1,764
Non-maturity deposits	446,559	380,983
Time deposits	178,558	136,619
Long-term borrowings	72,063	58,685
Junior subordinated debentures	11,580	9,344
Accrued interest payable	330	281
Interest rate swaps	(1,359)
Significant Unobservable Inputs (Level III) [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans receivable, net of allowance	$ 655,302	$ 528,065