Loans and Allowance for Loan Losses (Allowance for Loans Losses) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Allowance, beginning of period	$ 14,953	$ 16,025	$ 24,014
Provision charged to expense	8,520	9,720	9,220
Losses charged off	(8,140)	(13,009)	(19,655)
Recoveries	2,159	2,217	2,446
Allowance, end of period	17,492	14,953	16,025
Allowance for loan losses, Individually evaluated for impairment	5,238	3,729	6,132
Allowance for loan losses, Collectively evaluated for impairment	12,254	11,224	9,893
Allowance for loan losses, Loans acquired with deteriorated credit quality	0	0	0
Loans, net of unearned income	975,473	996,340	1,060,146
Loans, Individually evaluated for impairment	63,399	67,562	104,209
Loans, Collectively evaluated for impairment	912,074	928,778	955,937
Loans, Loans acquired with deteriorated credit quality	0	0	0
Construction
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Allowance, beginning of period	4,131	3,942	7,416
Provision charged to expense	1,895	2,159	693
Losses charged off	(2,052)	(2,935)	(5,471)
Recoveries	935	965	1,304
Allowance, end of period	4,909	4,131	3,942
Allowance for loan losses, Individually evaluated for impairment	2,036	1,750	2,871
Allowance for loan losses, Collectively evaluated for impairment	2,873	2,381	1,071
Allowance for loan losses, Loans acquired with deteriorated credit quality	0	0	0
Loans, net of unearned income	58,745	69,325	89,093
Loans, Individually evaluated for impairment	10,338	18,159	33,431
Loans, Collectively evaluated for impairment	48,407	51,166	55,662
Loans, Loans acquired with deteriorated credit quality	0	0	0
Other Commercial Real Estate
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Allowance, beginning of period	4,073	2,763	5,959
Provision charged to expense	4,693	5,308	4,164
Losses charged off	(3,357)	(4,446)	(7,854)
Recoveries	456	448	494
Allowance, end of period	5,865	4,073	2,763
Allowance for loan losses, Individually evaluated for impairment	2,421	894	1,582
Allowance for loan losses, Collectively evaluated for impairment	3,444	3,179	1,181
Allowance for loan losses, Loans acquired with deteriorated credit quality	0	0	0
Loans, net of unearned income	484,114	505,180	557,638
Loans, Individually evaluated for impairment	41,922	40,770	54,327
Loans, Collectively evaluated for impairment	442,192	464,410	503,311
Loans, Loans acquired with deteriorated credit quality	0	0	0
Commercial
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Allowance, beginning of period	3,347	4,442	5,893
Provision charged to expense	547	971	1,885
Losses charged off	(786)	(2,534)	(3,617)
Recoveries	158	468	281
Allowance, end of period	3,266	3,347	4,442
Allowance for loan losses, Individually evaluated for impairment	209	485	809
Allowance for loan losses, Collectively evaluated for impairment	3,057	2,862	3,633
Allowance for loan losses, Loans acquired with deteriorated credit quality	0	0	0
Loans, net of unearned income	153,550	155,330	133,226
Loans, Individually evaluated for impairment	1,352	1,544	8,296
Loans, Collectively evaluated for impairment	152,198	153,786	124,930
Loans, Loans acquired with deteriorated credit quality	0	0	0
Residential
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Allowance, beginning of period	2,607	3,701	3,407
Provision charged to expense	1,067	904	2,027
Losses charged off	(1,191)	(2,142)	(1,854)
Recoveries	403	144	121
Allowance, end of period	2,886	2,607	3,701
Allowance for loan losses, Individually evaluated for impairment	532	563	810
Allowance for loan losses, Collectively evaluated for impairment	2,354	2,044	2,891
Allowance for loan losses, Loans acquired with deteriorated credit quality	0	0	0
Loans, net of unearned income	238,728	223,839	235,489
Loans, Individually evaluated for impairment	9,653	6,924	7,552
Loans, Collectively evaluated for impairment	229,075	216,915	227,937
Loans, Loans acquired with deteriorated credit quality	0	0	0
Consumer
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Allowance, beginning of period	795	1,177	1,339
Provision charged to expense	318	378	451
Losses charged off	(754)	(952)	(859)
Recoveries	207	192	246
Allowance, end of period	566	795	1,177
Allowance for loan losses, Individually evaluated for impairment	40	37	60
Allowance for loan losses, Collectively evaluated for impairment	526	758	1,117
Allowance for loan losses, Loans acquired with deteriorated credit quality	0	0	0
Loans, net of unearned income	40,336	42,666	44,700
Loans, Individually evaluated for impairment	134	165	603
Loans, Collectively evaluated for impairment	40,202	42,501	44,097
Loans, Loans acquired with deteriorated credit quality	0	0	0
Unallocated
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Allowance, beginning of period	0	0	0
Provision charged to expense	0	0	0
Losses charged off	0	0	0
Recoveries	0	0	0
Allowance, end of period	0	0	0
Allowance for loan losses, Individually evaluated for impairment	0	0	0
Allowance for loan losses, Collectively evaluated for impairment	0	0	0
Allowance for loan losses, Loans acquired with deteriorated credit quality	0	0	0
Loans, net of unearned income	0	0	0
Loans, Individually evaluated for impairment	0	0	0
Loans, Collectively evaluated for impairment	0	0	0
Loans, Loans acquired with deteriorated credit quality	$ 0	$ 0	$ 0

Amount of recoveries of receivables doubtful of collection that were previously charged off.

No definition available.

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- Definition

Reflects the sum for the period of the additions and reductions to the loan loss reserve, which when added to the opening balance of the reserve will agree to the ending balance in the reserve.

+ References

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

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 114

-Paragraph 20

-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.

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 942

-SubTopic 210

-Section S99

-Paragraph 1

-Subparagraph (SX 210.9-03.7(d))

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-Name Accounting Standards Codification

-Topic 310

-SubTopic 10

-Section 50

-Paragraph 15

-Subparagraph (a)

-URI http://asc.fasb.org/extlink&oid=7512638&loc=d3e5212-111524

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-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 03

-Paragraph 7

-Subparagraph d

-Article 9

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- Definition

The balance of financing receivables that were acquired with deteriorated credit quality.

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- Definition

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

+ References

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-Name Accounting Standards Codification

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- Definition

The valuation allowance for financing receivables acquired with deteriorated credit quality.

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- Definition

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

+ References

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

+ References

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-Name Accounting Standards Codification

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- Definition

Amount of direct write-downs of financing receivables charged against the allowance.

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

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-Name Accounting Standards Codification

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- Definition

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

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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

-Subparagraph e

-Chapter V

-Subsection I

-LegacyDoc This is a non-GAAP reference that was included in the 2009 taxonomy. It will be removed from future versions of this taxonomy.

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher AICPA

-Name Audit and Accounting Guide (AAG)

-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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-Publisher AICPA

-Name Statement of Position (SOP)

-Number 01-6

-Paragraph 13

-Subparagraph e

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