Investment Securities (Narrative) (Details) (USD $)	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
Schedule of Investments [Line Items]
Gain on sale of investment securities	$ 0	$ 703,000
Sale proceeds from sale of securities	0	7,946,000
Income tax provision on gross gain on sale of securities	0	253,000
Additional credit-related impairment loss on securities for which an other-than-temporary impairment was previously recognized	0	0
Municipal Securities [Member]
Schedule of Investments [Line Items]
Market value of securities in the Pennsylvania geographical area with the highest concentration of municipal securities	$ 1,300,000
Number of municipal securities in investment portfolio	18
Securities in unrealized loss positions, number of positions	3
Number of securities in the geographical area with the highest concentration of municipal securities	1
Number of municipal securities with OTTI impairment	0
Collateralized Mortgage Obligations [Member]
Schedule of Investments [Line Items]
Number of municipal securities in investment portfolio	25
Securities in unrealized loss positions, number of positions	15
Asset-backed Securities [Member]
Schedule of Investments [Line Items]
Number of municipal securities in investment portfolio	2
Securities in unrealized loss positions, number of positions	1
Mortgage-backed Securities [Member]
Schedule of Investments [Line Items]
Number of municipal securities in investment portfolio	42
Securities in unrealized loss positions, number of positions	2