Loans, net and allowance for loan losses, Nonaccrual Loans by Major Loan Category (Details) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2013	Dec. 31, 2012
Information concerning nonaccrual loans by major loan category [Abstract]
Nonaccrual loans, Total	$ 7,810	$ 7,934
Major categories of the loan portfolio by past due status [Abstract]
30-59 Days Past Due	2,792	5,090
60-89 Days Past Due	1,926	692
Greater than 90 Days	4,304	861
Total Past Due	9,022	6,643
Current	496,087	459,130
Total	505,109	465,773
Loans > 90 Days and Accruing	497	861
Commercial [Member]
Information concerning nonaccrual loans by major loan category [Abstract]
Nonaccrual loans, Total	2,407	2,278
Major categories of the loan portfolio by past due status [Abstract]
30-59 Days Past Due	272	883
60-89 Days Past Due	3	255
Greater than 90 Days	2,254	324
Total Past Due	2,529	1,462
Current	184,933	168,917
Total	187,462	170,379
Loans > 90 Days and Accruing	53	324
Real Estate Commercial [Member]
Information concerning nonaccrual loans by major loan category [Abstract]
Nonaccrual loans, Total	3,739	4,171
Major categories of the loan portfolio by past due status [Abstract]
30-59 Days Past Due	1,041	2,268
60-89 Days Past Due	1,540	245
Greater than 90 Days	429	22
Total Past Due	3,010	2,535
Current	178,547	156,263
Total	181,557	158,798
Loans > 90 Days and Accruing		22
Real Estate Residential [Member]
Information concerning nonaccrual loans by major loan category [Abstract]
Nonaccrual loans, Total	1,664	1,485
Major categories of the loan portfolio by past due status [Abstract]
30-59 Days Past Due	1,138	1,528
60-89 Days Past Due	231
Greater than 90 Days	1,177	21
Total Past Due	2,546	1,549
Current	115,250	115,978
Total	117,796	117,527
Loans > 90 Days and Accruing		21
Consumer [Member]
Major categories of the loan portfolio by past due status [Abstract]
30-59 Days Past Due	341	411
60-89 Days Past Due	152	192
Greater than 90 Days	444	494
Total Past Due	937	1,097
Current	17,357	17,972
Total	18,294	19,069
Loans > 90 Days and Accruing	$ 444	$ 494

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Financing receivables that are less than 60 days past due but more than 29 days past due.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 310

-SubTopic 10

-Section 50

-Paragraph 7A

-URI http://asc.fasb.org/extlink&oid=7512638&loc=SL6953401-111524

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- Definition

Financing receivables that are less than 90 days past due but more than 59 days past due.

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- Definition

Recorded investment in financing receivables that are 90 days or more past due and still accruing.

+ References

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 310

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Financing receivables that are current.

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- Definition

Financing receivables that are equal to or greater than 90 days past due.

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Recorded investment in financing receivables that are on nonaccrual status as of the balance sheet date.

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Recorded Investment in financing receivables that are past due at the balance sheet date.

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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 FASB

-Name Accounting Standards Codification

-Topic 310

-SubTopic 10

-Section 50

-Paragraph 4

-URI http://asc.fasb.org/extlink&oid=7512638&loc=d3e5074-111524

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-Publisher AICPA

-Name Statement of Position (SOP)

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-Name Audit and Accounting Guide (AAG)

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-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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