Fair Value Measurements and Fair Value of Financial Instruments (Schedule of Placement of Carrying Amount and Fair Value in Hierarchy) (Details) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2014	Dec. 31, 2013
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash and due from banks, Fair Value	$ 106,282	$ 82,692
Cash and due from banks, Carrying Amount	106,282	82,692
Investment securities available-for-sale, Carrying Amount	287,471	323,070
Investment securities: Available-for-sale, Fair Value	287,471	323,070
Investment securities held-to-maturity, Carrying Amount	214,191	215,286
Investment securities held-to-maturity, Fair Value	214,952	210,958
Restricted investment in bank stocks, Carrying Amount	8,986	8,986
Restricted investment in bank stocks, Fair Value	8,986	8,986
Loans held for sale, Carrying Amount	976,896	950,610
Net Loans, Fair Value	975,016	948,606
Accrued interest receivable, Carrying Amount	6,341	6,802
Accrued interest receivable, Fair Value	6,341	6,802
Non interest-bearing deposits, Carrying Amount	223,332	227,370
Non interest-bearing deposits, Fair Value	223,332	227,370
Interest-bearing deposits, Carrying Amount	1,116,553	1,114,635
Interest-bearing deposits, Fair Value	1,117,677	1,115,781
Long-term borrowings, Carrying Amount	146,000	146,000
Long-term borrowings, Fair Value	158,306	157,440
Subordinated debentures, Carrying Amount	5,155	5,155
Subordinated debentures, Fair Value	4,923	5,143
Accrued interest payable, Carrying Amount	967	963
Accrued interest payable, Fair Value	967	963
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash and due from banks, Fair Value	106,282	82,692
Investment securities: Available-for-sale, Fair Value	20,160	19,530
Investment securities held-to-maturity, Fair Value	27,793	27,037
Restricted investment in bank stocks, Fair Value	0	0
Net Loans, Fair Value	0	0
Accrued interest receivable, Fair Value	0	0
Non interest-bearing deposits, Fair Value	0	0
Interest-bearing deposits, Fair Value	0	0
Long-term borrowings, Fair Value	0	0
Subordinated debentures, Fair Value	0	0
Accrued interest payable, Fair Value	0	0
Significant Other Observable Inputs (Level 2) [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash and due from banks, Fair Value	0	0
Investment securities: Available-for-sale, Fair Value	267,311	303,540
Investment securities held-to-maturity, Fair Value	168,230	164,940
Restricted investment in bank stocks, Fair Value	8,986	8,986
Net Loans, Fair Value	0	0
Accrued interest receivable, Fair Value	3,654	4,136
Non interest-bearing deposits, Fair Value	223,332	227,370
Interest-bearing deposits, Fair Value	1,117,677	1,115,781
Long-term borrowings, Fair Value	158,306	157,440
Subordinated debentures, Fair Value	4,923	5,143
Accrued interest payable, Fair Value	967	963
Significant Unobservable Inputs (Level 3) [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash and due from banks, Fair Value	0	0
Investment securities: Available-for-sale, Fair Value	0	0
Investment securities held-to-maturity, Fair Value	18,929	18,981
Restricted investment in bank stocks, Fair Value	0	0
Net Loans, Fair Value	975,016	948,606
Accrued interest receivable, Fair Value	2,687	2,666
Non interest-bearing deposits, Fair Value	0	0
Interest-bearing deposits, Fair Value	0	0
Long-term borrowings, Fair Value	0	0
Subordinated debentures, Fair Value	0	0
Accrued interest payable, Fair Value	$ 0	$ 0