Fair Value (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2012	Dec. 31, 2011
Assets and liabilities measured at fair value on a recurring basis
Securities available for sale	$ 737,311	$ 638,107
Trading securities	4,459	3,233
Interest Rate Swaps, Fair Value	(1,745)	(1,669)
U.S. Treasury [Member]
Assets and liabilities measured at fair value on a recurring basis
Securities available for sale	4,036	8,130
U.S. Government sponsored entities [Member]
Assets and liabilities measured at fair value on a recurring basis
Securities available for sale	163,781	107,492
Trading securities	58	55
States and political subdivisions [Member]
Assets and liabilities measured at fair value on a recurring basis
Securities available for sale	181,279	158,437
Residential & multi-family mortgage [Member]
Assets and liabilities measured at fair value on a recurring basis
Securities available for sale	316,822	300,126
Commercial mortgage [Member]
Assets and liabilities measured at fair value on a recurring basis
Securities available for sale	1,304	2,122
Corporate notes and bonds [Member]
Assets and liabilities measured at fair value on a recurring basis
Securities available for sale	15,024	13,860
Trading securities	101	100
Pooled trust preferred [Member]
Assets and liabilities measured at fair value on a recurring basis
Securities available for sale	600	340
Pooled SBA [Member]
Assets and liabilities measured at fair value on a recurring basis
Securities available for sale	52,927	46,056
Other securities [Member]
Assets and liabilities measured at fair value on a recurring basis
Securities available for sale	1,538	1,544
Corporate equity securities [Member]
Assets and liabilities measured at fair value on a recurring basis
Trading securities	3,117	1,959
Certificates of deposit [Member]
Assets and liabilities measured at fair value on a recurring basis
Trading securities	408	255
International mutual funds [Member]
Assets and liabilities measured at fair value on a recurring basis
Trading securities	287	257
Large cap growth mutual funds [Member]
Assets and liabilities measured at fair value on a recurring basis
Trading securities	157	145
Money market mutual funds [Member]
Assets and liabilities measured at fair value on a recurring basis
Trading securities	110	241
Large cap value mutual funds [Member]
Assets and liabilities measured at fair value on a recurring basis
Trading securities	104	105
Real estate investment trust mutual funds [Member]
Assets and liabilities measured at fair value on a recurring basis
Trading securities	65	68
Small cap mutual funds [Member]
Assets and liabilities measured at fair value on a recurring basis
Trading securities	26	25
Mid cap mutual funds [Member]
Assets and liabilities measured at fair value on a recurring basis
Trading securities	26	23
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	54,169	62,832
Trading securities	4,300	3,078
Interest Rate Swaps, Fair Value
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] \| U.S. Treasury [Member]
Assets and liabilities measured at fair value on a recurring basis
Securities available for sale
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] \| U.S. Government sponsored entities [Member]
Assets and liabilities measured at fair value on a recurring basis
Securities available for sale		2,000
Trading securities		0
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] \| States and political subdivisions [Member]
Assets and liabilities measured at fair value on a recurring basis
Securities available for sale		4,655
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] \| Residential & multi-family mortgage [Member]
Assets and liabilities measured at fair value on a recurring basis
Securities available for sale		8,577
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] \| Commercial mortgage [Member]
Assets and liabilities measured at fair value on a recurring basis
Securities available for sale
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] \| Corporate notes and bonds [Member]
Assets and liabilities measured at fair value on a recurring basis
Securities available for sale
Trading securities		0
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] \| Pooled trust preferred [Member]
Assets and liabilities measured at fair value on a recurring basis
Securities available for sale
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] \| Pooled SBA [Member]
Assets and liabilities measured at fair value on a recurring basis
Securities available for sale	52,631	46,056
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] \| Other securities [Member]
Assets and liabilities measured at fair value on a recurring basis
Securities available for sale	1,538	1,544
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] \| Corporate equity securities [Member]
Assets and liabilities measured at fair value on a recurring basis
Trading securities	3,117	1,959
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] \| Certificates of deposit [Member]
Assets and liabilities measured at fair value on a recurring basis
Trading securities	408	255
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] \| International mutual funds [Member]
Assets and liabilities measured at fair value on a recurring basis
Trading securities	287	257
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] \| Large cap growth mutual funds [Member]
Assets and liabilities measured at fair value on a recurring basis
Trading securities	157	145
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] \| Money market mutual funds [Member]
Assets and liabilities measured at fair value on a recurring basis
Trading securities	110	241
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] \| Large cap value mutual funds [Member]
Assets and liabilities measured at fair value on a recurring basis
Trading securities	104	105
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] \| Real estate investment trust mutual funds [Member]
Assets and liabilities measured at fair value on a recurring basis
Trading securities	65	68
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] \| Small cap mutual funds [Member]
Assets and liabilities measured at fair value on a recurring basis
Trading securities	26	25
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] \| Mid cap mutual funds [Member]
Assets and liabilities measured at fair value on a recurring basis
Trading securities	26	23
Significant Other Observable Inputs (Level 2) [Member]
Assets and liabilities measured at fair value on a recurring basis
Securities available for sale	680,562	572,875
Trading securities	159	155
Interest Rate Swaps, Fair Value	(1,745)	(1,669)
Significant Other Observable Inputs (Level 2) [Member] \| U.S. Treasury [Member]
Assets and liabilities measured at fair value on a recurring basis
Securities available for sale	4,036	8,130
Significant Other Observable Inputs (Level 2) [Member] \| U.S. Government sponsored entities [Member]
Assets and liabilities measured at fair value on a recurring basis
Securities available for sale	163,781	105,492
Trading securities	58	55
Significant Other Observable Inputs (Level 2) [Member] \| States and political subdivisions [Member]
Assets and liabilities measured at fair value on a recurring basis
Securities available for sale	181,279	153,782
Significant Other Observable Inputs (Level 2) [Member] \| Residential & multi-family mortgage [Member]
Assets and liabilities measured at fair value on a recurring basis
Securities available for sale	316,822	291,549
Significant Other Observable Inputs (Level 2) [Member] \| Commercial mortgage [Member]
Assets and liabilities measured at fair value on a recurring basis
Securities available for sale	1,304	2,122
Significant Other Observable Inputs (Level 2) [Member] \| Corporate notes and bonds [Member]
Assets and liabilities measured at fair value on a recurring basis
Securities available for sale	13,044	11,800
Trading securities	101	100
Significant Other Observable Inputs (Level 2) [Member] \| Pooled trust preferred [Member]
Assets and liabilities measured at fair value on a recurring basis
Securities available for sale
Significant Other Observable Inputs (Level 2) [Member] \| Pooled SBA [Member]
Assets and liabilities measured at fair value on a recurring basis
Securities available for sale	296
Significant Other Observable Inputs (Level 2) [Member] \| Other securities [Member]
Assets and liabilities measured at fair value on a recurring basis
Securities available for sale
Significant Other Observable Inputs (Level 2) [Member] \| Corporate equity securities [Member]
Assets and liabilities measured at fair value on a recurring basis
Trading securities
Significant Other Observable Inputs (Level 2) [Member] \| Certificates of deposit [Member]
Assets and liabilities measured at fair value on a recurring basis
Trading securities
Significant Other Observable Inputs (Level 2) [Member] \| International mutual funds [Member]
Assets and liabilities measured at fair value on a recurring basis
Trading securities
Significant Other Observable Inputs (Level 2) [Member] \| Large cap growth mutual funds [Member]
Assets and liabilities measured at fair value on a recurring basis
Trading securities
Significant Other Observable Inputs (Level 2) [Member] \| Money market mutual funds [Member]
Assets and liabilities measured at fair value on a recurring basis
Trading securities
Significant Other Observable Inputs (Level 2) [Member] \| Large cap value mutual funds [Member]
Assets and liabilities measured at fair value on a recurring basis
Trading securities
Significant Other Observable Inputs (Level 2) [Member] \| Real estate investment trust mutual funds [Member]
Assets and liabilities measured at fair value on a recurring basis
Trading securities
Significant Other Observable Inputs (Level 2) [Member] \| Small cap mutual funds [Member]
Assets and liabilities measured at fair value on a recurring basis
Trading securities
Significant Other Observable Inputs (Level 2) [Member] \| Mid cap mutual funds [Member]
Assets and liabilities measured at fair value on a recurring basis
Trading securities
Significant Unobservable Inputs (Level 3) [Member]
Assets and liabilities measured at fair value on a recurring basis
Securities available for sale	2,580	2,400
Trading securities
Interest Rate Swaps, Fair Value
Significant Unobservable Inputs (Level 3) [Member] \| U.S. Treasury [Member]
Assets and liabilities measured at fair value on a recurring basis
Securities available for sale
Significant Unobservable Inputs (Level 3) [Member] \| U.S. Government sponsored entities [Member]
Assets and liabilities measured at fair value on a recurring basis
Securities available for sale
Trading securities
Significant Unobservable Inputs (Level 3) [Member] \| States and political subdivisions [Member]
Assets and liabilities measured at fair value on a recurring basis
Securities available for sale
Significant Unobservable Inputs (Level 3) [Member] \| Residential & multi-family mortgage [Member]
Assets and liabilities measured at fair value on a recurring basis
Securities available for sale
Significant Unobservable Inputs (Level 3) [Member] \| Commercial mortgage [Member]
Assets and liabilities measured at fair value on a recurring basis
Securities available for sale
Significant Unobservable Inputs (Level 3) [Member] \| Corporate notes and bonds [Member]
Assets and liabilities measured at fair value on a recurring basis
Securities available for sale	1,980	2,060
Trading securities
Significant Unobservable Inputs (Level 3) [Member] \| Pooled trust preferred [Member]
Assets and liabilities measured at fair value on a recurring basis
Securities available for sale	600	340
Significant Unobservable Inputs (Level 3) [Member] \| Pooled SBA [Member]
Assets and liabilities measured at fair value on a recurring basis
Securities available for sale
Significant Unobservable Inputs (Level 3) [Member] \| Other securities [Member]
Assets and liabilities measured at fair value on a recurring basis
Securities available for sale
Significant Unobservable Inputs (Level 3) [Member] \| Corporate equity securities [Member]
Assets and liabilities measured at fair value on a recurring basis
Trading securities
Significant Unobservable Inputs (Level 3) [Member] \| Certificates of deposit [Member]
Assets and liabilities measured at fair value on a recurring basis
Trading securities
Significant Unobservable Inputs (Level 3) [Member] \| International mutual funds [Member]
Assets and liabilities measured at fair value on a recurring basis
Trading securities
Significant Unobservable Inputs (Level 3) [Member] \| Large cap growth mutual funds [Member]
Assets and liabilities measured at fair value on a recurring basis
Trading securities
Significant Unobservable Inputs (Level 3) [Member] \| Money market mutual funds [Member]
Assets and liabilities measured at fair value on a recurring basis
Trading securities
Significant Unobservable Inputs (Level 3) [Member] \| Large cap value mutual funds [Member]
Assets and liabilities measured at fair value on a recurring basis
Trading securities
Significant Unobservable Inputs (Level 3) [Member] \| Real estate investment trust mutual funds [Member]
Assets and liabilities measured at fair value on a recurring basis
Trading securities
Significant Unobservable Inputs (Level 3) [Member] \| Small cap mutual funds [Member]
Assets and liabilities measured at fair value on a recurring basis
Trading securities
Significant Unobservable Inputs (Level 3) [Member] \| Mid cap mutual funds [Member]
Assets and liabilities measured at fair value on a recurring basis
Trading securities

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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-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

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

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+ Details