Allowance for Loan Losses (Summary of Primary Segments of Loan Portfolio) (Details) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2013	Dec. 31, 2012	Mar. 31, 2012	Dec. 31, 2011
Accounts, Notes, Loans and Financing Receivable [Line Items]
Collectively evaluated for impairment	$ 711,572	$ 716,359
Individually evaluated for impairment	2,339	4,806
Total Loans	713,911	721,165
General reserve allocation	10,483	10,985
Specific reserve allocation	477	1,586
Total allowance for loan losses	10,960	12,571	13,778	14,623
Commercial [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Collectively evaluated for impairment	98,966	102,822
Individually evaluated for impairment
Total Loans	98,966	102,822
General reserve allocation	2,667	2,596
Specific reserve allocation
Total allowance for loan losses	2,667	2,596	2,483	2,365
Commercial loans secured by real estate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Collectively evaluated for impairment	373,834	378,546
Individually evaluated for impairment	2,327	4,793
Total Loans	376,161	383,339
General reserve allocation	5,512	6,210
Specific reserve allocation	477	1,586
Total allowance for loan losses	5,989	7,796	8,555	9,400
Real estate-mortgage [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Collectively evaluated for impairment	221,716	217,584
Individually evaluated for impairment
Total Loans	221,716	217,584
General reserve allocation	1,267	1,269
Specific reserve allocation
Total allowance for loan losses	1,267	1,269	1,250	1,270
Consumer [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Collectively evaluated for impairment	17,056	17,407
Individually evaluated for impairment	12	13
Total Loans	17,068	17,420
General reserve allocation	147	150
Specific reserve allocation
Total allowance for loan losses	147	150	166	174
Allocation for general risk [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
General reserve allocation	890	760
Specific reserve allocation
Total allowance for loan losses	$ 890	$ 760	$ 1,324	$ 1,414

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A valuation allowance for financing receivables that are expected to be uncollectible.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 310

-SubTopic 10

-Section 50

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-Subparagraph (c)(1)

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The valuation allowance for financing receivables that are expected to be uncollectible that were collectively evaluated for impairment.

+ References

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-Publisher FASB

-Name Accounting Standards Codification

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- Definition

Amount of valuation allowance for financing receivables that are expected to be uncollectible that were individually evaluated for impairment.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

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The balance of financing receivables that were collectively evaluated for impairment.

+ References

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-Publisher FASB

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The balance of financing receivables that were individually evaluated for impairment.

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- Definition

Amount before allowance and after deduction of deferred interest and fees, unamortized costs and premiums and discounts from face amounts, of loans and leases held in portfolio, including but not limited to, commercial and consumer loans. Excludes loans and leases covered under loss sharing agreements.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher OTS

-Name Federal Regulation (FR)

-Number Title 12

-Section 563c.102

-Paragraph 8

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-Number AAG-DEP

-Paragraph 116

-IssueDate 2006-05-01

-Chapter 8

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

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