Derivative Financial Instruments (Income Statement Disclosures) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
Derivative [Line Items]
Amount of pre-tax gain (loss) reclassified from AOCI into earnings (Effective Portion)	$ 463	$ (123)
Derivatives designated in cash flow hedging relationships | Interest rate swap
Derivative [Line Items]
Amount of pre-tax gain (loss) recognized in OCI (Effective Portion)	(69)	(40)
Derivatives designated in cash flow hedging relationships | Interest rate swap | Interest on junior subordinated debt
Derivative [Line Items]
Amount of pre-tax gain (loss) reclassified from AOCI into earnings (Effective Portion)	(157)	(146)
Derivatives not designated as hedging instruments: | Forward Sale Agreements | Mortgage banking income
Derivative [Line Items]
Amount of pre-tax gain (loss) reclassified from AOCI into earnings (Effective Portion)	355	248
Derivatives not designated as hedging instruments: | Written Interest Rate Options (Locks) | Mortgage banking income
Derivative [Line Items]
Amount of pre-tax gain (loss) reclassified from AOCI into earnings (Effective Portion)	$ 108	$ (371)