Investment Securities (Schedule of Fair Value and Unrealized Loss on Investments in a Continuous Unrealized Loss Position) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended	12 Months Ended
	Mar. 31, 2014 security	Dec. 31, 2013 security
Schedule of Investments [Line Items]
Available-for-sale, Securities in Unrealized Loss Positions, Qualitative Disclosure, Number of Positions	85	120
Less than 12 Months: Fair Value	$ 32,573	$ 49,410
Less than 12 Months: Unrealized Losses	753	2,332
12 Months or More: Fair Value	18,807	14,704
12 Months or More: Unrealized Losses	903	613
Total: Fair Value	51,380	64,114
Total: Unrealized Losses	1,656	2,945
U.S. Treasury and U.S. government agencies [Member]
Schedule of Investments [Line Items]
Available-for-sale, Securities in Unrealized Loss Positions, Qualitative Disclosure, Number of Positions	4
Less than 12 Months: Fair Value	4,515
Less than 12 Months: Unrealized Losses	15
Total: Fair Value	4,515
Total: Unrealized Losses	15
Mortgage-backed U.S. government agencies [Member]
Schedule of Investments [Line Items]
Available-for-sale, Securities in Unrealized Loss Positions, Qualitative Disclosure, Number of Positions	18	29
Less than 12 Months: Fair Value	5,757	9,799
Less than 12 Months: Unrealized Losses	45	182
12 Months or More: Fair Value	8,908	9,866
12 Months or More: Unrealized Losses	231	256
Total: Fair Value	14,665	19,665
Total: Unrealized Losses	276	438
State and political subdivision obligations [Member]
Schedule of Investments [Line Items]
Available-for-sale, Securities in Unrealized Loss Positions, Qualitative Disclosure, Number of Positions	62	90
Less than 12 Months: Fair Value	22,301	39,611
Less than 12 Months: Unrealized Losses	693	2,150
12 Months or More: Fair Value	9,349	4,288
12 Months or More: Unrealized Losses	643	326
Total: Fair Value	31,650	43,899
Total: Unrealized Losses	1,336	2,476
Equity securities [Member]
Schedule of Investments [Line Items]
Available-for-sale, Securities in Unrealized Loss Positions, Qualitative Disclosure, Number of Positions	1	1
12 Months or More: Fair Value	550	550
12 Months or More: Unrealized Losses	29	31
Total: Fair Value	550	550
Total: Unrealized Losses	$ 29	$ 31