Investments (Narrative) (Details) (USD $)	12 Months Ended
	Dec. 31, 2012 security	Dec. 31, 2011 security	Dec. 31, 2010
Schedule of Investments [Line Items]
Other than Temporary Impairment Losses, Investments, Portion Recognized in Earnings, Net	$ 100,000	$ 240,000	$ 1,059,000
Available-for-sale Securities	133,328,000	125,301,000
Amortized Cost	130,785,000	123,874,000
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value	31,813,000	32,100,000
Proceeds from sales and calls of investment securities available for sale	494,000	9,772,000	25,322,000
Securities pledged as collateral	119,800,000	112,100,000
Change in Unrealized Losses	738,000
Available-for-sale, Securities in Unrealized Loss Positions, Qualitative Disclosure, Nature	For securities with an unrealized loss, Management applies a systematic methodology in order to perform an assessment of the potential for other-than-temporary impairment. In the case of debt securities, investments considered for other-than-temporary impairment: (1) had a specified maturity or repricing date; (2) were generally expected to be redeemed at par, and (3) were expected to achieve a recovery in market value within a reasonable period of time. In addition, the Bank considers whether it intends to sell these securities or whether it will be forced to sell these securities before the earlier of amortized cost recovery or maturity. Equity securities are assessed for other-than-temporary impairment based on the length of time of impairment, dollar amount of the impairment and general market and financial conditions relating to specific issues. The impairment identified on debt and equity securities and subject to assessment at December 31, 2012, was deemed to be temporary and required no further adjustments to the financial statements, unless otherwise noted. The table below reflects the temporary impairment in the investment portfolio (excluding restricted stock), aggregated by investment category, length of time that individual securities have been in a continuous unrealized loss position and the number of securities in each category as of December 31, 2012 and 2011.
Available-for-sale, Securities in Unrealized Loss Positions, Qualitative Disclosure, Number of Positions	63	58
OtherThanTemporaryImpairmentLossesInvestmentsAvailableforsaleSecuritiesPortionRecognizedInEarningsNetQualitativeDisclosuresMethodology	The PLMBS sector continues to show a gross unrealized loss of $123 thousand on five securities. The majority of this sector is comprised of "Alt-A" PLMBS. These bonds were all rated AAA at time of purchase but have since experienced rating declines. Some have experienced increased delinquencies and defaults, while others have seen the credit support increase as the bonds paid-down. The Bank monitors the performance of the Alt-A investments on a regular basis and reviews delinquencies, default rates, credit support levels and various cash flow stress test scenarios. In determining the credit related loss, Management considers all principal past due 60 days or more as a loss. If additional principal moves beyond 60 days past due, it will also be considered a loss. As a result of the analysis on PLMBS it was determined that three bonds contained losses that were considered other-than-temporary. Management determined $100 thousand was credit related and therefore, recorded an impairment charge of $100 thousand against earnings in 2012. The market for PLMBS continues to be weak and Management believes that this factor accounts for a portion of the unrealized losses that is not attributable to credit issues. Management continues to monitor these securities and it is possible that additional write-downs may occur if current loss trends continue. The Bank is participating in a class-action lawsuit against one PLMBS servicer that centers on defective warranties and representations made as part of the underwriting process. The resolution of this action is unknown at this time. For additional detail on the Bank's PLMBS see the following table.
Restricted stock	3,571,000	5,022,000
Net decrease in restricted stock	1,451,000	1,137,000	323,000
Equity securities [Member]
Schedule of Investments [Line Items]
Other than Temporary Impairment Losses, Investments, Portion Recognized in Earnings, Net	0
Available-for-sale Securities	1,941,000	1,759,000
Amortized Cost	2,104,000	2,105,000
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value	1,462,000	1,258,000
Available-for-sale, Securities in Unrealized Loss Positions, Qualitative Disclosure, Number of Positions	16	16
Municipal securities [Member]
Schedule of Investments [Line Items]
Percent of Investment Portfolio	68.00%
Number of investments	108
Number of States	27
Available-for-sale Securities	61,216,000	45,081,000
Amortized Cost	58,395,000	42,490,000
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value	8,789,000	579,000
Available-for-sale, Securities in Unrealized Loss Positions, Qualitative Disclosure, Number of Positions	10	1
Taxable Municipal Bonds [Member]
Schedule of Investments [Line Items]
Number of investments	18
Available-for-sale Securities	16,800,000
Build America Bonds [Member]
Schedule of Investments [Line Items]
Number of investments	8
Corporate debt securities [Member]
Schedule of Investments [Line Items]
Available-for-sale Securities	994,000	2,414,000
Amortized Cost	1,005,000	2,484,000
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value	994,000	1,889,000
Available-for-sale, Securities in Unrealized Loss Positions, Qualitative Disclosure, Number of Positions	1	2
Trust preferred securities [Member]
Schedule of Investments [Line Items]
Other than Temporary Impairment Losses, Investments, Portion Recognized in Earnings, Net	0
Percent of Investment Portfolio	62.00%
Available-for-sale Securities	4,830,000	4,618,000
Amortized Cost	5,905,000	5,890,000
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value	4,830,000	4,618,000
Change in Unrealized Losses	200,000
Gross Unrealized Gain (Loss)	(1,075,000)
Available-for-sale, Securities in Unrealized Loss Positions, Qualitative Disclosure, Number of Positions	7	7
Mortgage Backed Securities [Member]
Schedule of Investments [Line Items]
Percent of Investment Portfolio	39.00%
Available-for-sale Securities	51,500,000
Agency mortgage-backed securities [Member]
Schedule of Investments [Line Items]
Available-for-sale Securities	49,066,000	55,285,000
Amortized Cost	48,121,000	54,314,000
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value	9,533,000	13,626,000
Available-for-sale, Securities in Unrealized Loss Positions, Qualitative Disclosure, Number of Positions	14	13
Private-label mortgage-backed securities [Member]
Schedule of Investments [Line Items]
Other than Temporary Impairment Losses, Investments, Portion Recognized in Earnings, Net	100,000
Number of investments	6
Available-for-sale Securities	2,426,000	2,867,000
Amortized Cost	2,539,000	3,366,000
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value	1,875,000	2,693,000
Proceeds from sales and calls of investment securities available for sale	1,000,000
Gross Unrealized Gain (Loss)	(113,000)
Available-for-sale, Securities in Unrealized Loss Positions, Qualitative Disclosure, Number of Positions	5	6
PLMBS [Member]
Schedule of Investments [Line Items]
Gross Unrealized Gain (Loss)	(123,000)
Available-for-sale, Securities in Unrealized Loss Positions, Qualitative Disclosure, Number of Positions	5
Texas [Member] | Municipal securities [Member]
Schedule of Investments [Line Items]
Number of investments	19
Available-for-sale Securities	9,800,000
Pennsylvania [Member] | Municipal securities [Member]
Schedule of Investments [Line Items]
Number of investments	11
Available-for-sale Securities	7,100,000
Paid Off During the Period [Member] | Private-label mortgage-backed securities [Member]
Schedule of Investments [Line Items]
Number of investments	1
Other-than-temporary impairment charges [Member] | Private-label mortgage-backed securities [Member]
Schedule of Investments [Line Items]
Number of investments	3
FHLB [Member]
Schedule of Investments [Line Items]
Restricted Stock Cost	$ 100
FHLB [Member] | Excess Stock Held [Member]
Schedule of Investments [Line Items]
Restricted stock	1,600,000
Moody's, A Rating [Member] | Municipal securities [Member]
Schedule of Investments [Line Items]
Available-for-sale Securities	51,000,000
No Agency Rating [Member] | Municipal securities [Member]
Schedule of Investments [Line Items]
Number of investments	5
Available-for-sale Securities	$ 2,000,000
Moody's, A3 Rating [Member] | Corporate debt securities [Member]
Schedule of Investments [Line Items]
Number of investments	1