Fair Value Measurements (Details) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2013	Dec. 31, 2012
RECURRING FAIR VALUE MEASUREMENTS: [Member]
ASSETS
TOTAL RECURRING FAIR VALUE MEASUREMENTS	$ 357,816	$ 361,208
RECURRING FAIR VALUE MEASUREMENTS: [Member] | U.S. Government Agency Securities [Member]
ASSETS
Securities available for sale	20,736	20,822
RECURRING FAIR VALUE MEASUREMENTS: [Member] | Agency Mortgage-Backed Securities [Member]
ASSETS
Securities available for sale	222,577	221,425
RECURRING FAIR VALUE MEASUREMENTS: [Member] | Agency Collateralized Mortgage Obligations [Member]
ASSETS
Securities available for sale	72,307	68,376
RECURRING FAIR VALUE MEASUREMENTS: [Member] | Private Mortgage-Backed Securities [Member]
ASSETS
Securities available for sale	3,370	3,532
RECURRING FAIR VALUE MEASUREMENTS: [Member] | Single Issuer Trust Preferred Securities Issued by Banks [Member]
ASSETS
Securities available for sale		2,240
RECURRING FAIR VALUE MEASUREMENTS: [Member] | Pooled Trust Preferred Securities Issued by Banks and Insurers [Member]
ASSETS
Securities available for sale	3,292	2,981
RECURRING FAIR VALUE MEASUREMENTS: [Member] | Marketable Equity Securities [Member]
ASSETS
Securities available for sale	11,138	9,910
RECURRING FAIR VALUE MEASUREMENTS: [Member] | LOANS HELD FOR SALE [Member]
ASSETS
Assets, Fair Value Disclosure, Recurring	36,790	48,187
RECURRING FAIR VALUE MEASUREMENTS: [Member] | DERIVATIVE INSTRUMENTS [Member]
ASSETS
Assets, Fair Value Disclosure, Recurring	26,707	30,528
RECURRING FAIR VALUE MEASUREMENTS: [Member] | DERIVATIVE INSTRUMENTS [Member]
LIABILITIES
Liabilities, Fair Value Disclosure, Recurring	41,374	46,793
NONRECURRING FAIR VALUE MEASUREMENTS: [Member]
ASSETS
TOTAL NONRECURRING FAIR VALUE MEASUREMENTS	18,705	19,791
NONRECURRING FAIR VALUE MEASUREMENTS: [Member] | IMPAIRED LOANS [Member]
ASSETS
Assets, Fair Value Disclosure, Nonrecurring		7,817	[1]
NONRECURRING FAIR VALUE MEASUREMENTS: [Member] | COLLATERAL DEPENDENT IMPAIRED LOANS [Member]
ASSETS
Assets, Fair Value Disclosure, Nonrecurring	7,060
NONRECURRING FAIR VALUE MEASUREMENTS: [Member] | OTHER REAL ESTATE OWNED [Member]
ASSETS
Assets, Fair Value Disclosure, Nonrecurring	11,645	11,974
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | RECURRING FAIR VALUE MEASUREMENTS: [Member]
ASSETS
TOTAL RECURRING FAIR VALUE MEASUREMENTS	11,138	9,910
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | RECURRING FAIR VALUE MEASUREMENTS: [Member] | U.S. Government Agency Securities [Member]
ASSETS
Securities available for sale
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | RECURRING FAIR VALUE MEASUREMENTS: [Member] | Agency Mortgage-Backed Securities [Member]
ASSETS
Securities available for sale
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | RECURRING FAIR VALUE MEASUREMENTS: [Member] | Agency Collateralized Mortgage Obligations [Member]
ASSETS
Securities available for sale
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | RECURRING FAIR VALUE MEASUREMENTS: [Member] | Private Mortgage-Backed Securities [Member]
ASSETS
Securities available for sale
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | RECURRING FAIR VALUE MEASUREMENTS: [Member] | Single Issuer Trust Preferred Securities Issued by Banks [Member]
ASSETS
Securities available for sale
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | RECURRING FAIR VALUE MEASUREMENTS: [Member] | Pooled Trust Preferred Securities Issued by Banks and Insurers [Member]
ASSETS
Securities available for sale
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | RECURRING FAIR VALUE MEASUREMENTS: [Member] | Marketable Equity Securities [Member]
ASSETS
Securities available for sale	11,138	9,910
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | RECURRING FAIR VALUE MEASUREMENTS: [Member] | LOANS HELD FOR SALE [Member]
ASSETS
Assets, Fair Value Disclosure, Recurring
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | RECURRING FAIR VALUE MEASUREMENTS: [Member] | DERIVATIVE INSTRUMENTS [Member]
ASSETS
Assets, Fair Value Disclosure, Recurring
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | RECURRING FAIR VALUE MEASUREMENTS: [Member] | DERIVATIVE INSTRUMENTS [Member]
LIABILITIES
Liabilities, Fair Value Disclosure, Recurring
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | NONRECURRING FAIR VALUE MEASUREMENTS: [Member]
ASSETS
TOTAL NONRECURRING FAIR VALUE MEASUREMENTS
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | NONRECURRING FAIR VALUE MEASUREMENTS: [Member] | IMPAIRED LOANS [Member]
ASSETS
Assets, Fair Value Disclosure, Nonrecurring			[1]
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | NONRECURRING FAIR VALUE MEASUREMENTS: [Member] | COLLATERAL DEPENDENT IMPAIRED LOANS [Member]
ASSETS
Assets, Fair Value Disclosure, Nonrecurring
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | NONRECURRING FAIR VALUE MEASUREMENTS: [Member] | OTHER REAL ESTATE OWNED [Member]
ASSETS
Assets, Fair Value Disclosure, Nonrecurring
Significant Other Observable Inputs (Level 2) [Member] | RECURRING FAIR VALUE MEASUREMENTS: [Member]
ASSETS
TOTAL RECURRING FAIR VALUE MEASUREMENTS	340,016	344,785
Significant Other Observable Inputs (Level 2) [Member] | RECURRING FAIR VALUE MEASUREMENTS: [Member] | U.S. Government Agency Securities [Member]
ASSETS
Securities available for sale	20,736	20,822
Significant Other Observable Inputs (Level 2) [Member] | RECURRING FAIR VALUE MEASUREMENTS: [Member] | Agency Mortgage-Backed Securities [Member]
ASSETS
Securities available for sale	222,577	221,425
Significant Other Observable Inputs (Level 2) [Member] | RECURRING FAIR VALUE MEASUREMENTS: [Member] | Agency Collateralized Mortgage Obligations [Member]
ASSETS
Securities available for sale	72,307	68,376
Significant Other Observable Inputs (Level 2) [Member] | RECURRING FAIR VALUE MEASUREMENTS: [Member] | Private Mortgage-Backed Securities [Member]
ASSETS
Securities available for sale
Significant Other Observable Inputs (Level 2) [Member] | RECURRING FAIR VALUE MEASUREMENTS: [Member] | Single Issuer Trust Preferred Securities Issued by Banks [Member]
ASSETS
Securities available for sale		2,240
Significant Other Observable Inputs (Level 2) [Member] | RECURRING FAIR VALUE MEASUREMENTS: [Member] | Pooled Trust Preferred Securities Issued by Banks and Insurers [Member]
ASSETS
Securities available for sale
Significant Other Observable Inputs (Level 2) [Member] | RECURRING FAIR VALUE MEASUREMENTS: [Member] | Marketable Equity Securities [Member]
ASSETS
Securities available for sale
Significant Other Observable Inputs (Level 2) [Member] | RECURRING FAIR VALUE MEASUREMENTS: [Member] | LOANS HELD FOR SALE [Member]
ASSETS
Assets, Fair Value Disclosure, Recurring	36,790	48,187
Significant Other Observable Inputs (Level 2) [Member] | RECURRING FAIR VALUE MEASUREMENTS: [Member] | DERIVATIVE INSTRUMENTS [Member]
ASSETS
Assets, Fair Value Disclosure, Recurring	26,707	30,528
Significant Other Observable Inputs (Level 2) [Member] | RECURRING FAIR VALUE MEASUREMENTS: [Member] | DERIVATIVE INSTRUMENTS [Member]
LIABILITIES
Liabilities, Fair Value Disclosure, Recurring	41,374	46,793
Significant Other Observable Inputs (Level 2) [Member] | NONRECURRING FAIR VALUE MEASUREMENTS: [Member]
ASSETS
TOTAL NONRECURRING FAIR VALUE MEASUREMENTS
Significant Other Observable Inputs (Level 2) [Member] | NONRECURRING FAIR VALUE MEASUREMENTS: [Member] | IMPAIRED LOANS [Member]
ASSETS
Assets, Fair Value Disclosure, Nonrecurring			[1]
Significant Other Observable Inputs (Level 2) [Member] | NONRECURRING FAIR VALUE MEASUREMENTS: [Member] | COLLATERAL DEPENDENT IMPAIRED LOANS [Member]
ASSETS
Assets, Fair Value Disclosure, Nonrecurring
Significant Other Observable Inputs (Level 2) [Member] | NONRECURRING FAIR VALUE MEASUREMENTS: [Member] | OTHER REAL ESTATE OWNED [Member]
ASSETS
Assets, Fair Value Disclosure, Nonrecurring
Significant Unobservable Inputs (Level 3) [Member] | Private Mortgage-Backed Securities [Member]
ASSETS
Assets, Fair Value Disclosure, Recurring	3,370
Significant Unobservable Inputs (Level 3) [Member] | IMPAIRED LOANS [Member]
ASSETS
Assets, Fair Value Disclosure, Recurring	7,060
Significant Unobservable Inputs (Level 3) [Member] | OTHER REAL ESTATE OWNED [Member]
ASSETS
Assets, Fair Value Disclosure, Recurring	11,645
Significant Unobservable Inputs (Level 3) [Member] | RECURRING FAIR VALUE MEASUREMENTS: [Member]
ASSETS
TOTAL RECURRING FAIR VALUE MEASUREMENTS	6,662	6,513
Significant Unobservable Inputs (Level 3) [Member] | RECURRING FAIR VALUE MEASUREMENTS: [Member] | U.S. Government Agency Securities [Member]
ASSETS
Securities available for sale
Significant Unobservable Inputs (Level 3) [Member] | RECURRING FAIR VALUE MEASUREMENTS: [Member] | Agency Mortgage-Backed Securities [Member]
ASSETS
Securities available for sale
Significant Unobservable Inputs (Level 3) [Member] | RECURRING FAIR VALUE MEASUREMENTS: [Member] | Agency Collateralized Mortgage Obligations [Member]
ASSETS
Securities available for sale
Significant Unobservable Inputs (Level 3) [Member] | RECURRING FAIR VALUE MEASUREMENTS: [Member] | Private Mortgage-Backed Securities [Member]
ASSETS
Securities available for sale	3,370	3,532
Significant Unobservable Inputs (Level 3) [Member] | RECURRING FAIR VALUE MEASUREMENTS: [Member] | Single Issuer Trust Preferred Securities Issued by Banks [Member]
ASSETS
Securities available for sale
Significant Unobservable Inputs (Level 3) [Member] | RECURRING FAIR VALUE MEASUREMENTS: [Member] | Pooled Trust Preferred Securities Issued by Banks and Insurers [Member]
ASSETS
Securities available for sale	3,292	2,981
Significant Unobservable Inputs (Level 3) [Member] | RECURRING FAIR VALUE MEASUREMENTS: [Member] | Marketable Equity Securities [Member]
ASSETS
Securities available for sale
Significant Unobservable Inputs (Level 3) [Member] | RECURRING FAIR VALUE MEASUREMENTS: [Member] | LOANS HELD FOR SALE [Member]
ASSETS
Assets, Fair Value Disclosure, Recurring
Significant Unobservable Inputs (Level 3) [Member] | RECURRING FAIR VALUE MEASUREMENTS: [Member] | DERIVATIVE INSTRUMENTS [Member]
ASSETS
Assets, Fair Value Disclosure, Recurring
Significant Unobservable Inputs (Level 3) [Member] | RECURRING FAIR VALUE MEASUREMENTS: [Member] | DERIVATIVE INSTRUMENTS [Member]
LIABILITIES
Liabilities, Fair Value Disclosure, Recurring
Significant Unobservable Inputs (Level 3) [Member] | NONRECURRING FAIR VALUE MEASUREMENTS: [Member]
ASSETS
TOTAL NONRECURRING FAIR VALUE MEASUREMENTS	18,705	19,791
Significant Unobservable Inputs (Level 3) [Member] | NONRECURRING FAIR VALUE MEASUREMENTS: [Member] | IMPAIRED LOANS [Member]
ASSETS
Assets, Fair Value Disclosure, Nonrecurring		7,817	[1]
Significant Unobservable Inputs (Level 3) [Member] | NONRECURRING FAIR VALUE MEASUREMENTS: [Member] | COLLATERAL DEPENDENT IMPAIRED LOANS [Member]
ASSETS
Assets, Fair Value Disclosure, Nonrecurring	7,060
Significant Unobservable Inputs (Level 3) [Member] | NONRECURRING FAIR VALUE MEASUREMENTS: [Member] | OTHER REAL ESTATE OWNED [Member]
ASSETS
Assets, Fair Value Disclosure, Nonrecurring	11,645	11,974
Total Gains (Losses) [Member] | NONRECURRING FAIR VALUE MEASUREMENTS: [Member]
ASSETS
TOTAL NONRECURRING FAIR VALUE MEASUREMENTS	(738)	(1,284)
Total Gains (Losses) [Member] | NONRECURRING FAIR VALUE MEASUREMENTS: [Member] | IMPAIRED LOANS [Member]
ASSETS
Assets, Fair Value Disclosure, Nonrecurring		(1,284)	[1]
Total Gains (Losses) [Member] | NONRECURRING FAIR VALUE MEASUREMENTS: [Member] | COLLATERAL DEPENDENT IMPAIRED LOANS [Member]
ASSETS
Assets, Fair Value Disclosure, Nonrecurring	(738)
Total Gains (Losses) [Member] | NONRECURRING FAIR VALUE MEASUREMENTS: [Member] | OTHER REAL ESTATE OWNED [Member]
ASSETS
Assets, Fair Value Disclosure, Nonrecurring

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