Fair Value (Details) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2013	Dec. 31, 2012
Assets and liabilities measured at fair value on a recurring basis
Trading securities	$ 5,066	$ 4,459
Fair value measurement on recurring basis [Member]
Assets and liabilities measured at fair value on a recurring basis
Securities available for sale	760,945	737,311
Trading securities	5,066	4,459
Interest Rate Swaps	(1,630)	(1,745)
U.S. Treasury [Member] \| Fair value measurement on recurring basis [Member]
Assets and liabilities measured at fair value on a recurring basis
Securities available for sale	2,025	4,036
U.S. Government sponsored entities [Member] \| Fair value measurement on recurring basis [Member]
Assets and liabilities measured at fair value on a recurring basis
Securities available for sale	192,770	163,781
Trading securities	57	58
States and political subdivisions [Member] \| Fair value measurement on recurring basis [Member]
Assets and liabilities measured at fair value on a recurring basis
Securities available for sale	184,154	181,279
Residential & multi-family mortgage [Member] \| Fair value measurement on recurring basis [Member]
Assets and liabilities measured at fair value on a recurring basis
Securities available for sale	296,305	316,822
Commercial mortgage [Member] \| Fair value measurement on recurring basis [Member]
Assets and liabilities measured at fair value on a recurring basis
Securities available for sale	1,264	1,304
Corporate notes and bonds [Member] \| Fair value measurement on recurring basis [Member]
Assets and liabilities measured at fair value on a recurring basis
Securities available for sale	15,336	15,024
Trading securities	101	101
Pooled trust preferred [Member] \| Fair value measurement on recurring basis [Member]
Assets and liabilities measured at fair value on a recurring basis
Securities available for sale	558	600
Pooled SBA [Member] \| Fair value measurement on recurring basis [Member]
Assets and liabilities measured at fair value on a recurring basis
Securities available for sale	67,001	52,927
Other securities [Member] \| Fair value measurement on recurring basis [Member]
Assets and liabilities measured at fair value on a recurring basis
Securities available for sale	1,532	1,538
Corporate equity securities [Member] \| Fair value measurement on recurring basis [Member]
Assets and liabilities measured at fair value on a recurring basis
Trading securities	3,760	3,117
Certificates of deposit [Member] \| Fair value measurement on recurring basis [Member]
Assets and liabilities measured at fair value on a recurring basis
Trading securities	358	408
International mutual funds [Member] \| Fair value measurement on recurring basis [Member]
Assets and liabilities measured at fair value on a recurring basis
Trading securities	261	287
Large cap growth mutual funds [Member] \| Fair value measurement on recurring basis [Member]
Assets and liabilities measured at fair value on a recurring basis
Trading securities	158	157
Money market mutual funds [Member] \| Fair value measurement on recurring basis [Member]
Assets and liabilities measured at fair value on a recurring basis
Trading securities	79	110
Large cap value mutual funds [Member] \| Fair value measurement on recurring basis [Member]
Assets and liabilities measured at fair value on a recurring basis
Trading securities	106	104
Real estate investment trust mutual funds [Member] \| Fair value measurement on recurring basis [Member]
Assets and liabilities measured at fair value on a recurring basis
Trading securities	68	65
Small cap mutual funds [Member] \| Fair value measurement on recurring basis [Member]
Assets and liabilities measured at fair value on a recurring basis
Trading securities	59	26
Mid cap mutual funds [Member] \| Fair value measurement on recurring basis [Member]
Assets and liabilities measured at fair value on a recurring basis
Trading securities	59	26
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]
Assets and liabilities measured at fair value on a recurring basis
Securities available for sale	68,533	54,169
Trading securities	4,908	4,300
Interest Rate Swaps	0	0
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] \| Fair value measurement on recurring basis [Member]
Assets and liabilities measured at fair value on a recurring basis
Securities available for sale	68,533	54,169
Trading securities	4,908	4,300
Interest Rate Swaps	0	0
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] \| U.S. Treasury [Member] \| Fair value measurement on recurring basis [Member]
Assets and liabilities measured at fair value on a recurring basis
Securities available for sale	0	0
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] \| U.S. Government sponsored entities [Member] \| Fair value measurement on recurring basis [Member]
Assets and liabilities measured at fair value on a recurring basis
Securities available for sale	0	0
Trading securities	0	0
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] \| States and political subdivisions [Member] \| Fair value measurement on recurring basis [Member]
Assets and liabilities measured at fair value on a recurring basis
Securities available for sale	0	0
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] \| Residential & multi-family mortgage [Member] \| Fair value measurement on recurring basis [Member]
Assets and liabilities measured at fair value on a recurring basis
Securities available for sale	0	0
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] \| Commercial mortgage [Member] \| Fair value measurement on recurring basis [Member]
Assets and liabilities measured at fair value on a recurring basis
Securities available for sale	0	0
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] \| Corporate notes and bonds [Member] \| Fair value measurement on recurring basis [Member]
Assets and liabilities measured at fair value on a recurring basis
Securities available for sale	0	0
Trading securities	0	0
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] \| Pooled trust preferred [Member] \| Fair value measurement on recurring basis [Member]
Assets and liabilities measured at fair value on a recurring basis
Securities available for sale	0	0
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] \| Pooled SBA [Member] \| Fair value measurement on recurring basis [Member]
Assets and liabilities measured at fair value on a recurring basis
Securities available for sale	67,001	52,631
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] \| Other securities [Member] \| Fair value measurement on recurring basis [Member]
Assets and liabilities measured at fair value on a recurring basis
Securities available for sale	1,532	1,538
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] \| Corporate equity securities [Member] \| Fair value measurement on recurring basis [Member]
Assets and liabilities measured at fair value on a recurring basis
Trading securities	3,760	3,117
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] \| Certificates of deposit [Member] \| Fair value measurement on recurring basis [Member]
Assets and liabilities measured at fair value on a recurring basis
Trading securities	358	408
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] \| International mutual funds [Member] \| Fair value measurement on recurring basis [Member]
Assets and liabilities measured at fair value on a recurring basis
Trading securities	261	287
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] \| Large cap growth mutual funds [Member] \| Fair value measurement on recurring basis [Member]
Assets and liabilities measured at fair value on a recurring basis
Trading securities	158	157
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] \| Money market mutual funds [Member] \| Fair value measurement on recurring basis [Member]
Assets and liabilities measured at fair value on a recurring basis
Trading securities	79	110
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] \| Large cap value mutual funds [Member] \| Fair value measurement on recurring basis [Member]
Assets and liabilities measured at fair value on a recurring basis
Trading securities	106	104
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] \| Real estate investment trust mutual funds [Member] \| Fair value measurement on recurring basis [Member]
Assets and liabilities measured at fair value on a recurring basis
Trading securities	68	65
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] \| Small cap mutual funds [Member] \| Fair value measurement on recurring basis [Member]
Assets and liabilities measured at fair value on a recurring basis
Trading securities	59	26
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] \| Mid cap mutual funds [Member] \| Fair value measurement on recurring basis [Member]
Assets and liabilities measured at fair value on a recurring basis
Trading securities	59	26
Significant Other Observable Inputs (Level 2) [Member]
Assets and liabilities measured at fair value on a recurring basis
Securities available for sale	689,787	680,562
Trading securities	158	159
Interest Rate Swaps	(1,630)	(1,745)
Significant Other Observable Inputs (Level 2) [Member] \| Fair value measurement on recurring basis [Member]
Assets and liabilities measured at fair value on a recurring basis
Securities available for sale	689,787	680,562
Trading securities	158	159
Interest Rate Swaps	(1,630)	(1,745)
Significant Other Observable Inputs (Level 2) [Member] \| U.S. Treasury [Member] \| Fair value measurement on recurring basis [Member]
Assets and liabilities measured at fair value on a recurring basis
Securities available for sale	2,025	4,036
Significant Other Observable Inputs (Level 2) [Member] \| U.S. Government sponsored entities [Member] \| Fair value measurement on recurring basis [Member]
Assets and liabilities measured at fair value on a recurring basis
Securities available for sale	192,770	163,781
Trading securities	57	58
Significant Other Observable Inputs (Level 2) [Member] \| States and political subdivisions [Member] \| Fair value measurement on recurring basis [Member]
Assets and liabilities measured at fair value on a recurring basis
Securities available for sale	184,154	181,279
Significant Other Observable Inputs (Level 2) [Member] \| Residential & multi-family mortgage [Member] \| Fair value measurement on recurring basis [Member]
Assets and liabilities measured at fair value on a recurring basis
Securities available for sale	296,305	316,822
Significant Other Observable Inputs (Level 2) [Member] \| Commercial mortgage [Member] \| Fair value measurement on recurring basis [Member]
Assets and liabilities measured at fair value on a recurring basis
Securities available for sale	1,264	1,304
Significant Other Observable Inputs (Level 2) [Member] \| Corporate notes and bonds [Member] \| Fair value measurement on recurring basis [Member]
Assets and liabilities measured at fair value on a recurring basis
Securities available for sale	13,269	13,044
Trading securities	101	101
Significant Other Observable Inputs (Level 2) [Member] \| Pooled trust preferred [Member] \| Fair value measurement on recurring basis [Member]
Assets and liabilities measured at fair value on a recurring basis
Securities available for sale	0	0
Significant Other Observable Inputs (Level 2) [Member] \| Pooled SBA [Member] \| Fair value measurement on recurring basis [Member]
Assets and liabilities measured at fair value on a recurring basis
Securities available for sale	0	296
Significant Other Observable Inputs (Level 2) [Member] \| Other securities [Member] \| Fair value measurement on recurring basis [Member]
Assets and liabilities measured at fair value on a recurring basis
Securities available for sale	0	0
Significant Other Observable Inputs (Level 2) [Member] \| Corporate equity securities [Member] \| Fair value measurement on recurring basis [Member]
Assets and liabilities measured at fair value on a recurring basis
Trading securities	0	0
Significant Other Observable Inputs (Level 2) [Member] \| Certificates of deposit [Member] \| Fair value measurement on recurring basis [Member]
Assets and liabilities measured at fair value on a recurring basis
Trading securities	0	0
Significant Other Observable Inputs (Level 2) [Member] \| International mutual funds [Member] \| Fair value measurement on recurring basis [Member]
Assets and liabilities measured at fair value on a recurring basis
Trading securities	0	0
Significant Other Observable Inputs (Level 2) [Member] \| Large cap growth mutual funds [Member] \| Fair value measurement on recurring basis [Member]
Assets and liabilities measured at fair value on a recurring basis
Trading securities	0	0
Significant Other Observable Inputs (Level 2) [Member] \| Money market mutual funds [Member] \| Fair value measurement on recurring basis [Member]
Assets and liabilities measured at fair value on a recurring basis
Trading securities	0	0
Significant Other Observable Inputs (Level 2) [Member] \| Large cap value mutual funds [Member] \| Fair value measurement on recurring basis [Member]
Assets and liabilities measured at fair value on a recurring basis
Trading securities	0	0
Significant Other Observable Inputs (Level 2) [Member] \| Real estate investment trust mutual funds [Member] \| Fair value measurement on recurring basis [Member]
Assets and liabilities measured at fair value on a recurring basis
Trading securities	0	0
Significant Other Observable Inputs (Level 2) [Member] \| Small cap mutual funds [Member] \| Fair value measurement on recurring basis [Member]
Assets and liabilities measured at fair value on a recurring basis
Trading securities	0	0
Significant Other Observable Inputs (Level 2) [Member] \| Mid cap mutual funds [Member] \| Fair value measurement on recurring basis [Member]
Assets and liabilities measured at fair value on a recurring basis
Trading securities	0	0
Significant Unobservable Inputs (Level 3) [Member]
Assets and liabilities measured at fair value on a recurring basis
Securities available for sale	2,625	2,580
Trading securities	0	0
Interest Rate Swaps	0	0
Significant Unobservable Inputs (Level 3) [Member] \| Fair value measurement on recurring basis [Member]
Assets and liabilities measured at fair value on a recurring basis
Securities available for sale	2,625	2,580
Trading securities	0	0
Interest Rate Swaps	0	0
Significant Unobservable Inputs (Level 3) [Member] \| U.S. Treasury [Member] \| Fair value measurement on recurring basis [Member]
Assets and liabilities measured at fair value on a recurring basis
Securities available for sale	0	0
Significant Unobservable Inputs (Level 3) [Member] \| U.S. Government sponsored entities [Member] \| Fair value measurement on recurring basis [Member]
Assets and liabilities measured at fair value on a recurring basis
Securities available for sale	0	0
Trading securities	0	0
Significant Unobservable Inputs (Level 3) [Member] \| States and political subdivisions [Member] \| Fair value measurement on recurring basis [Member]
Assets and liabilities measured at fair value on a recurring basis
Securities available for sale	0	0
Significant Unobservable Inputs (Level 3) [Member] \| Residential & multi-family mortgage [Member] \| Fair value measurement on recurring basis [Member]
Assets and liabilities measured at fair value on a recurring basis
Securities available for sale	0	0
Significant Unobservable Inputs (Level 3) [Member] \| Commercial mortgage [Member] \| Fair value measurement on recurring basis [Member]
Assets and liabilities measured at fair value on a recurring basis
Securities available for sale	0	0
Significant Unobservable Inputs (Level 3) [Member] \| Corporate notes and bonds [Member] \| Fair value measurement on recurring basis [Member]
Assets and liabilities measured at fair value on a recurring basis
Securities available for sale	2,067	1,980
Trading securities	0	0
Significant Unobservable Inputs (Level 3) [Member] \| Pooled trust preferred [Member] \| Fair value measurement on recurring basis [Member]
Assets and liabilities measured at fair value on a recurring basis
Securities available for sale	558	600
Significant Unobservable Inputs (Level 3) [Member] \| Pooled SBA [Member] \| Fair value measurement on recurring basis [Member]
Assets and liabilities measured at fair value on a recurring basis
Securities available for sale	0	0
Significant Unobservable Inputs (Level 3) [Member] \| Other securities [Member] \| Fair value measurement on recurring basis [Member]
Assets and liabilities measured at fair value on a recurring basis
Securities available for sale	0	0
Significant Unobservable Inputs (Level 3) [Member] \| Corporate equity securities [Member] \| Fair value measurement on recurring basis [Member]
Assets and liabilities measured at fair value on a recurring basis
Trading securities	0	0
Significant Unobservable Inputs (Level 3) [Member] \| Certificates of deposit [Member] \| Fair value measurement on recurring basis [Member]
Assets and liabilities measured at fair value on a recurring basis
Trading securities	0	0
Significant Unobservable Inputs (Level 3) [Member] \| International mutual funds [Member] \| Fair value measurement on recurring basis [Member]
Assets and liabilities measured at fair value on a recurring basis
Trading securities	0	0
Significant Unobservable Inputs (Level 3) [Member] \| Large cap growth mutual funds [Member] \| Fair value measurement on recurring basis [Member]
Assets and liabilities measured at fair value on a recurring basis
Trading securities	0	0
Significant Unobservable Inputs (Level 3) [Member] \| Money market mutual funds [Member] \| Fair value measurement on recurring basis [Member]
Assets and liabilities measured at fair value on a recurring basis
Trading securities	0	0
Significant Unobservable Inputs (Level 3) [Member] \| Large cap value mutual funds [Member] \| Fair value measurement on recurring basis [Member]
Assets and liabilities measured at fair value on a recurring basis
Trading securities	0	0
Significant Unobservable Inputs (Level 3) [Member] \| Real estate investment trust mutual funds [Member] \| Fair value measurement on recurring basis [Member]
Assets and liabilities measured at fair value on a recurring basis
Trading securities	0	0
Significant Unobservable Inputs (Level 3) [Member] \| Small cap mutual funds [Member] \| Fair value measurement on recurring basis [Member]
Assets and liabilities measured at fair value on a recurring basis
Trading securities	0	0
Significant Unobservable Inputs (Level 3) [Member] \| Mid cap mutual funds [Member] \| Fair value measurement on recurring basis [Member]
Assets and liabilities measured at fair value on a recurring basis
Trading securities	$ 0	$ 0

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

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

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

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

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+ Details

- Definition

The total of financial instruments that are bought and held principally for the purpose of selling them in the near term (thus held for only a short period of time) or for debt and equity securities formerly categorized as available-for-sale or held-to-maturity which the entity held as of the date it opted to account for such securities at fair value. An enterprise may also categorize such a security as trading without the intent to sell it in the near term assuming the decision to categorize the security as trading occurred at acquisition.

+ References

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

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-Name Accounting Standards Codification

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-SubTopic 210

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-Paragraph 1

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

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-Glossary Trading Securities

-URI http://asc.fasb.org/extlink&oid=6526789

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

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+ Details