Derivative Financial Instruments (Balance Sheet Disclosures) (Details) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2013	Dec. 31, 2012
Derivatives, Fair Value [Line Items]
Asset Derivatives, Notional Amount	$ 1,946	$ 30,566
Asset Derivative, Fair Value	31	317
Liability Derivative, Notional Amount	31,458	44,175
Liability Derivative, Fair Value	1,611	2,610
Derivatives designated in cash flow hedging relationships | Interest rate swap | Other Assets
Derivatives, Fair Value [Line Items]
Asset Derivatives, Notional Amount	0	0
Asset Derivative, Fair Value	0	0
Derivatives designated in cash flow hedging relationships | Interest rate swap | Other Liabilities
Derivatives, Fair Value [Line Items]
Liability Derivative, Notional Amount	30,000	30,000
Liability Derivative, Fair Value	1,565	2,484
Derivatives not designated as hedging instruments: | Forward Sale Agreements | Other Assets
Derivatives, Fair Value [Line Items]
Asset Derivatives, Notional Amount	1,836	21,925
Asset Derivative, Fair Value	30	168
Derivatives not designated as hedging instruments: | Forward Sale Agreements | Other Liabilities
Derivatives, Fair Value [Line Items]
Liability Derivative, Notional Amount	0	10,888
Liability Derivative, Fair Value	0	63
Derivatives not designated as hedging instruments: | Written Interest Rate Options (Locks) | Other Assets
Derivatives, Fair Value [Line Items]
Asset Derivatives, Notional Amount	110	8,641
Asset Derivative, Fair Value	1	149
Derivatives not designated as hedging instruments: | Written Interest Rate Options (Locks) | Other Liabilities
Derivatives, Fair Value [Line Items]
Liability Derivative, Notional Amount	1,458	3,287
Liability Derivative, Fair Value	$ 46	$ 63