Loans and Allowance for Loan Losses (Allowance for Loans Losses) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
Mar. 31, 2013	Mar. 31, 2012	Dec. 31, 2012
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Allowance, beginning of period	$ 17,492	$ 14,953
Provision charged to expense	1,280	2,280
Losses charged off	(747)	(2,061)
Recoveries	244	912
Allowance, end of period	18,269	16,084
Allowance for loan losses, Individually evaluated for impairment	5,278	4,135	5,238
Allowance for loan losses, Collectively evaluated for impairment	12,991	11,949	12,254
Allowance for loan losses, Loans acquired with deteriorated credit quality	0	0	0
Total Loans Receivable	987,657	979,495	975,473
Loans, Individually evaluated for impairment	51,594	69,241	63,399
Loans, Collectively evaluated for impairment	936,063	910,254	912,074
Loans, Loans acquired with deteriorated credit quality	0	0	0
Construction
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Allowance, beginning of period	4,909	4,131
Provision charged to expense	316	32
Losses charged off	0	(92)
Recoveries	34	355
Allowance, end of period	5,259	4,426
Allowance for loan losses, Individually evaluated for impairment	2,217	1,689	2,036
Allowance for loan losses, Collectively evaluated for impairment	3,042	2,737	2,873
Allowance for loan losses, Loans acquired with deteriorated credit quality	0	0	0
Total Loans Receivable	62,116	70,087	58,745
Loans, Individually evaluated for impairment	10,115	17,501	10,338
Loans, Collectively evaluated for impairment	52,001	52,586	48,407
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	5,865	4,073
Provision charged to expense	863	2,446
Losses charged off	(361)	(1,353)
Recoveries	33	114
Allowance, end of period	6,400	5,280
Allowance for loan losses, Individually evaluated for impairment	2,351	1,340	2,421
Allowance for loan losses, Collectively evaluated for impairment	4,049	3,940	3,444
Allowance for loan losses, Loans acquired with deteriorated credit quality	0	0	0
Total Loans Receivable	495,337	498,724	484,114
Loans, Individually evaluated for impairment	31,715	42,734	41,922
Loans, Collectively evaluated for impairment	463,622	455,990	442,192
Loans, Loans acquired with deteriorated credit quality	0	0	0
Commercial
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Allowance, beginning of period	3,266	3,347
Provision charged to expense	42	(355)
Losses charged off	(119)	(208)
Recoveries	110	72
Allowance, end of period	3,299	2,856
Allowance for loan losses, Individually evaluated for impairment	299	361	209
Allowance for loan losses, Collectively evaluated for impairment	3,000	2,495	3,057
Allowance for loan losses, Loans acquired with deteriorated credit quality	0	0	0
Total Loans Receivable	150,125	144,319	153,550
Loans, Individually evaluated for impairment	1,191	1,393	1,352
Loans, Collectively evaluated for impairment	148,934	142,926	152,198
Loans, Loans acquired with deteriorated credit quality	0	0	0
Residential
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Allowance, beginning of period	2,886	2,607
Provision charged to expense	(4)	258
Losses charged off	(149)	(239)
Recoveries	18	320
Allowance, end of period	2,751	2,946
Allowance for loan losses, Individually evaluated for impairment	359	706	532
Allowance for loan losses, Collectively evaluated for impairment	2,392	2,240	2,354
Allowance for loan losses, Loans acquired with deteriorated credit quality	0	0	0
Total Loans Receivable	242,307	224,989	238,728
Loans, Individually evaluated for impairment	8,371	7,455	9,653
Loans, Collectively evaluated for impairment	233,936	217,534	229,075
Loans, Loans acquired with deteriorated credit quality	0	0	0
Consumer
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Allowance, beginning of period	566	795
Provision charged to expense	63	(101)
Losses charged off	(118)	(169)
Recoveries	49	51
Allowance, end of period	560	576
Allowance for loan losses, Individually evaluated for impairment	52	39	40
Allowance for loan losses, Collectively evaluated for impairment	508	537	526
Allowance for loan losses, Loans acquired with deteriorated credit quality	0	0	0
Total Loans Receivable	37,772	41,376	40,336
Loans, Individually evaluated for impairment	202	158	134
Loans, Collectively evaluated for impairment	37,570	41,218	40,202
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
Provision charged to expense	0	0
Losses charged off	0	0
Recoveries	0	0
Allowance, end of period	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
Total Loans Receivable	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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-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.

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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.

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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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- Definition

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

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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

-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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