Fair Value (Details) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2012	Dec. 31, 2011
Total available for sale securities	$ 250,057	$ 198,746
Residential Mortgage Backed Agencies Issued By Us Government Sponsored Entities [Member]
Total available for sale securities	166,731	121,027
Us States and Political Subdivisions Debt Securities [Member]
Total available for sale securities	80,512	76,527
Mortgage-Backed Securities, Issued By Us Government Sponsored Enterprises [Member]
Total available for sale securities	1,618	121,027
Collateralized Debt Obligations [Member]
Total available for sale securities	936	937
Mutual Funds [Member]
Total available for sale securities	260	255
Fair Value, Inputs, Level 1 [Member]
Total available for sale securities	0	0
Fair Value, Inputs, Level 1 [Member] \| Residential Mortgage Backed Agencies Issued By Us Government Sponsored Entities [Member]
Total available for sale securities	0
Fair Value, Inputs, Level 1 [Member] \| Us States and Political Subdivisions Debt Securities [Member]
Total available for sale securities	0	0
Fair Value, Inputs, Level 1 [Member] \| Mortgage-Backed Securities, Issued By Us Government Sponsored Enterprises [Member]
Total available for sale securities	0	0
Fair Value, Inputs, Level 1 [Member] \| Collateralized Debt Obligations [Member]
Total available for sale securities	0	0
Fair Value, Inputs, Level 1 [Member] \| Mutual Funds [Member]
Total available for sale securities	0	0
Fair Value, Inputs, Level 2 [Member]
Total available for sale securities	249,062	197,657
Fair Value, Inputs, Level 2 [Member] \| Residential Mortgage Backed Agencies Issued By Us Government Sponsored Entities [Member]
Total available for sale securities	166,731
Fair Value, Inputs, Level 2 [Member] \| Us States and Political Subdivisions Debt Securities [Member]
Total available for sale securities	80,453	76,375
Fair Value, Inputs, Level 2 [Member] \| Mortgage-Backed Securities, Issued By Us Government Sponsored Enterprises [Member]
Total available for sale securities	1,618	121,027
Fair Value, Inputs, Level 2 [Member] \| Collateralized Debt Obligations [Member]
Total available for sale securities	0	0
Fair Value, Inputs, Level 2 [Member] \| Mutual Funds [Member]
Total available for sale securities	260	255
Fair Value, Inputs, Level 3 [Member]
Total available for sale securities	995	1,089
Fair Value, Inputs, Level 3 [Member] \| Residential Mortgage Backed Agencies Issued By Us Government Sponsored Entities [Member]
Total available for sale securities	0
Fair Value, Inputs, Level 3 [Member] \| Us States and Political Subdivisions Debt Securities [Member]
Total available for sale securities	59	152
Fair Value, Inputs, Level 3 [Member] \| Mortgage-Backed Securities, Issued By Us Government Sponsored Enterprises [Member]
Total available for sale securities	0	0
Fair Value, Inputs, Level 3 [Member] \| Collateralized Debt Obligations [Member]
Total available for sale securities	936	937
Fair Value, Inputs, Level 3 [Member] \| Mutual Funds [Member]
Total available for sale securities	$ 0	$ 0

Amount of investment in debt and equity securities categorized neither as held-to-maturity nor trading.

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

-Publisher FASB

-Name FASB Staff Position (FSP)

-Number FAS115-1/124-1

-Paragraph 15D

-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 Statement of Financial Accounting Standard (FAS)

-Number 115

-Paragraph 12

-Subparagraph b

-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 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 320

-SubTopic 10

-Section 45

-Paragraph 1

-URI http://asc.fasb.org/extlink&oid=6871852&loc=d3e26610-111562

Reference 4: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 115

-Paragraph 16

-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 5: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name FASB Staff Position (FSP)

-Number FAS115-1/124-1

-Paragraph 15C

-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 6: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 320

-SubTopic 10

-Section 25

-Paragraph 1

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=7534914&loc=d3e22054-111558

Reference 7: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name FASB Staff Position (FSP)

-Number FAS115-1/124-1

-Paragraph 15E

-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 8: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 115

-Paragraph 13

-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 9: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 115

-Paragraph 14

-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 10: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 133

-Paragraph 22

-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.

+ Details