Securities (Details) (USD $)	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Amortized cost and fair value of securities available for sale, with unrealized gains and losses [Abstract]
Amortized Cost	$ 50,208,000	$ 49,734,000
Gross Unrealized Gains	1,415,000	1,378,000
Gross Unrealized (Losses)	(3,531,000)	(3,463,000)
Fair Value	48,092,000	47,649,000
Available-for-sale Securities, Amortized Cost [Abstract]
Due in one year or less	0
Due after one year through five years	11,999,000
Due after five years through ten years	12,291,000
Due after ten years	25,572,000
Equity securities	346,000
Amortized Cost	50,208,000	49,734,000
Available-for-sale Securities, Fair Value [Abstract]
Due in one year or less	0
Due after one year through five years	12,053,000
Due after five years through ten years	12,989,000
Due after ten years	22,687,000
Equity securities	363,000
Fair Value	48,092,000	47,649,000
Number of securities sold	7	3	9
Fair value of securities sold	3,700,000	6,400,000	9,900,000
Gain on sale of securities	163,000	74,000	541,000
Number of securities called	11	16
Amortized cost of called securities	11,000,000	17,000,000
Gain (loss) on called securities	3,000	6,000
Impairment losses on securities	0	189,000	1,404,000
Tax benefit on impairment loss	60,000	(39,000)	34,000
Purchase of securities	25,700,000	32,200,000
Securities with gross unrealized losses and fair value in a continuous unrealized loss position [Abstract]
Less than 12 months, fair value	2,165,000	2,512,000
Less than 12 months, unrealized (losses)	(20,000)	(4,000)
12 months or more, fair value	325,000	335,000
12 months or more, unrealized (losses)	(3,511,000)	(3,459,000)
Total, fair value	2,490,000	2,847,000
Total, unrealized (losses)	(3,531,000)	(3,463,000)
Number of temporarily impaired securities	4
Number of different financial institutions per bond	60
Estimated maturity	21 years
Anniversary on which securities could have been called at par	5 years
Frequency of repricing	3 months
Proceeds from nonperforming bonds as a partial repayment	49,000
Number of bonds on which partial repayment received	2
Additional information regarding each of the pooled trust preferred securities [Abstract]
Cost, net of OTTI loss	50,208,000	49,734,000
Amount related to credit losses recognized in earnings [Roll Forward]
Beginning balance	2,206,000
Add: Amount related to the credit loss for which an other-than-temporary impairment was not previously recognized	0
Add: Increases to the amount related to the credit loss for which an other-than temporary impairment was previously recognized	0
Less: Realized losses for securities sold	0
Less: Securities for which the amount previously recognized in other comprehensive income was recognized in earnings because the Company intends to sell the security or more likely than not will be required to sell the security before recovery of its amortized cost basis	0
Less: Increases in cash flows expected to be collected that are recognized over the remaining life of the security (See FASB ASC 320-10-35-35)	91,000
Ending balance	2,115,000	2,206,000
Carrying value of securities pledged	41,500,000	37,300,000
Pooled trust preferred securities [Member]
Amortized cost and fair value of securities available for sale, with unrealized gains and losses [Abstract]
Amortized Cost	3,836,000
Available-for-sale Securities, Amortized Cost [Abstract]
Amortized Cost	3,836,000
Available-for-sale Securities, Fair Value [Abstract]
Impairment losses on securities		189,000	1,400,000
Tax benefit on impairment loss		39,000	477,000
Number of bonds sold to ensure recognition of current value that had future exposure to prepayment risk			8
Number of bonds sold due to its relatively longer-term contractual duration			1
Duration of extension risk on bond sold			2 years
Tax expense (benefit) on gain (loss) on sale of securities			184,000
Additional information regarding each of the pooled trust preferred securities [Abstract]
Cost, net of OTTI loss	3,836,000
Fair Value	325,000
Cumulative amount of OTTI Loss	2,115,000
Cumulative Other Comprehensive Loss, net of tax benefit	2,317,000
Pooled trust preferred securities I [Member] | Moody's, Ca Rating [Member]
Amortized cost and fair value of securities available for sale, with unrealized gains and losses [Abstract]
Amortized Cost	372,000
Available-for-sale Securities, Amortized Cost [Abstract]
Amortized Cost	372,000
Additional information regarding each of the pooled trust preferred securities [Abstract]
Cost, net of OTTI loss	372,000
Fair Value	34,000
Percent of Underlying Collateral Performing (in hundredths)	59.50%
Percent of Underlying Collateral in Deferral (in hundredths)	13.30%
Percent of Underlying Collateral in Default (in hundredths)	27.20%
Estimated incremental defaults required to break yield	broken
Cumulative amount of OTTI Loss	605,000
Cumulative Other Comprehensive Loss, net of tax benefit	223,000
Pooled trust preferred securities II [Member] | Moody's, C Rating [Member]
Amortized cost and fair value of securities available for sale, with unrealized gains and losses [Abstract]
Amortized Cost	1,612,000
Available-for-sale Securities, Amortized Cost [Abstract]
Amortized Cost	1,612,000
Additional information regarding each of the pooled trust preferred securities [Abstract]
Cost, net of OTTI loss	1,612,000
Fair Value	244,000
Percent of Underlying Collateral Performing (in hundredths)	67.70%
Percent of Underlying Collateral in Deferral (in hundredths)	15.90%
Percent of Underlying Collateral in Default (in hundredths)	16.40%
Estimated incremental defaults required to break yield	broken
Cumulative amount of OTTI Loss	362,000
Cumulative Other Comprehensive Loss, net of tax benefit	903,000
Pooled trust preferred securities III [Member] | Moody's, Ca Rating [Member]
Amortized cost and fair value of securities available for sale, with unrealized gains and losses [Abstract]
Amortized Cost	1,295,000
Available-for-sale Securities, Amortized Cost [Abstract]
Amortized Cost	1,295,000
Additional information regarding each of the pooled trust preferred securities [Abstract]
Cost, net of OTTI loss	1,295,000
Fair Value	25,000
Percent of Underlying Collateral Performing (in hundredths)	59.90%
Percent of Underlying Collateral in Deferral (in hundredths)	32.30%
Percent of Underlying Collateral in Default (in hundredths)	7.80%
Estimated incremental defaults required to break yield	broken
Cumulative amount of OTTI Loss	705,000
Cumulative Other Comprehensive Loss, net of tax benefit	838,000
Pooled trust preferred securities IV [Member] | Moody's, Ca Rating [Member]
Amortized cost and fair value of securities available for sale, with unrealized gains and losses [Abstract]
Amortized Cost	557,000
Available-for-sale Securities, Amortized Cost [Abstract]
Amortized Cost	557,000
Additional information regarding each of the pooled trust preferred securities [Abstract]
Cost, net of OTTI loss	557,000
Fair Value	22,000
Percent of Underlying Collateral Performing (in hundredths)	66.20%
Percent of Underlying Collateral in Deferral (in hundredths)	23.10%
Percent of Underlying Collateral in Default (in hundredths)	10.70%
Estimated incremental defaults required to break yield	broken
Cumulative amount of OTTI Loss	443,000
Cumulative Other Comprehensive Loss, net of tax benefit	353,000
Obligations of U.S. Government Corporations and Agencies [Member]
Amortized cost and fair value of securities available for sale, with unrealized gains and losses [Abstract]
Amortized Cost	39,240,000	38,812,000
Gross Unrealized Gains	794,000	762,000
Gross Unrealized (Losses)	(20,000)	(2,000)
Fair Value	40,014,000	39,572,000
Available-for-sale Securities, Amortized Cost [Abstract]
Amortized Cost	39,240,000	38,812,000
Available-for-sale Securities, Fair Value [Abstract]
Fair Value	40,014,000	39,572,000
Securities with gross unrealized losses and fair value in a continuous unrealized loss position [Abstract]
Less than 12 months, fair value	2,165,000	1,997,000
Less than 12 months, unrealized (losses)	(20,000)	(2,000)
12 months or more, fair value	0	0
12 months or more, unrealized (losses)	0	0
Total, fair value	2,165,000	1,997,000
Total, unrealized (losses)	(20,000)	(2,000)
Additional information regarding each of the pooled trust preferred securities [Abstract]
Cost, net of OTTI loss	39,240,000	38,812,000
Obligations of States and Political Subdivisions [Member]
Amortized cost and fair value of securities available for sale, with unrealized gains and losses [Abstract]
Amortized Cost	6,786,000	6,791,000
Gross Unrealized Gains	604,000	604,000
Gross Unrealized (Losses)	0	(2,000)
Fair Value	7,390,000	7,393,000
Available-for-sale Securities, Amortized Cost [Abstract]
Amortized Cost	6,786,000	6,791,000
Available-for-sale Securities, Fair Value [Abstract]
Fair Value	7,390,000	7,393,000
Securities with gross unrealized losses and fair value in a continuous unrealized loss position [Abstract]
Less than 12 months, fair value		515,000
Less than 12 months, unrealized (losses)		(2,000)
12 months or more, fair value		0
12 months or more, unrealized (losses)		0
Total, fair value		515,000
Total, unrealized (losses)		(2,000)
Additional information regarding each of the pooled trust preferred securities [Abstract]
Cost, net of OTTI loss	6,786,000	6,791,000
Corporate Bonds [Member]
Amortized cost and fair value of securities available for sale, with unrealized gains and losses [Abstract]
Amortized Cost	3,836,000	3,794,000
Gross Unrealized Gains	0	0
Gross Unrealized (Losses)	(3,511,000)	(3,459,000)
Fair Value	325,000	335,000
Available-for-sale Securities, Amortized Cost [Abstract]
Amortized Cost	3,836,000	3,794,000
Available-for-sale Securities, Fair Value [Abstract]
Fair Value	325,000	335,000
Securities with gross unrealized losses and fair value in a continuous unrealized loss position [Abstract]
Less than 12 months, fair value	0	0
Less than 12 months, unrealized (losses)	0	0
12 months or more, fair value	325,000	335,000
12 months or more, unrealized (losses)	(3,511,000)	(3,459,000)
Total, fair value	325,000	335,000
Total, unrealized (losses)	(3,511,000)	(3,459,000)
Additional information regarding each of the pooled trust preferred securities [Abstract]
Cost, net of OTTI loss	3,836,000	3,794,000
Mutual Funds [Member]
Amortized cost and fair value of securities available for sale, with unrealized gains and losses [Abstract]
Amortized Cost	346,000	337,000
Gross Unrealized Gains	17,000	12,000
Gross Unrealized (Losses)	0	0
Fair Value	363,000	349,000
Available-for-sale Securities, Amortized Cost [Abstract]
Amortized Cost	346,000	337,000
Available-for-sale Securities, Fair Value [Abstract]
Fair Value	363,000	349,000
Additional information regarding each of the pooled trust preferred securities [Abstract]
Cost, net of OTTI loss	346,000	337,000
FHLMC Preferred Bank Stock [Member]
Available-for-sale Securities, Fair Value [Abstract]
Gain on sale of securities		22,000
Impairment losses on securities			$ 9,000
Number of shares of Federal Home Loan Mortgage Corporation preferred bank stock sold (in shares)		10,000