Fair Value (Valuation Techniques) (Details) (USD $) In Thousands, unless otherwise specified	6 Months Ended
	Jun. 30, 2012
Mortgage interest rate lock agreements | Discounted cash flow
Fair Value Inputs [Abstract]
Pull through rates	85.00%
Mortgage interest rate lock agreements | Discounted cash flow | Weighted Average
Fair Value Inputs [Abstract]
Pull through rates	85.00%
Mortgage forward sale agreements | Consensus pricing
Fair Value Inputs [Abstract]
Pull through rates	85.00%
Mortgage forward sale agreements | Consensus pricing | Weighted Average
Fair Value Inputs [Abstract]
Pull through rates	85.00%
Interest rate swap | Discounted cash flow | Minimum
Fair Value Inputs [Abstract]
Discount rate	0.52%
Interest rate swap | Discounted cash flow | Maximum
Fair Value Inputs [Abstract]
Discount rate	1.10%
Interest rate swap | Discounted cash flow | Weighted Average
Fair Value Inputs [Abstract]
Discount rate	0.68%
Collateralized debt obligations | Discounted cash flow | Minimum
Fair Value Inputs [Abstract]
Discount rate	15.00%
Default rates	0.25%
Collateralized debt obligations | Discounted cash flow | Maximum
Fair Value Inputs [Abstract]
Discount rate	25.00%
Default rates	1.76%
Collateralized debt obligations | Discounted cash flow | Weighted Average
Fair Value Inputs [Abstract]
Discount rate	18.63%
Default rates	0.74%
Impaired loans | Consensus pricing | Minimum
Fair Value Inputs [Abstract]
Adjustments for market conditions since appraisal	1
Impaired loans | Consensus pricing | Maximum
Fair Value Inputs [Abstract]
Adjustments for market conditions since appraisal	559
Impaired loans | Consensus pricing | Weighted Average
Fair Value Inputs [Abstract]
Adjustments for market conditions since appraisal	51
Loan foreclosures | Consensus pricing | Minimum
Fair Value Inputs [Abstract]
Adjustments for market conditions since appraisal	1
Loan foreclosures | Consensus pricing | Maximum
Fair Value Inputs [Abstract]
Adjustments for market conditions since appraisal	68
Loan foreclosures | Consensus pricing | Weighted Average
Fair Value Inputs [Abstract]
Adjustments for market conditions since appraisal	25
Other real estate | Consensus pricing | Minimum
Fair Value Inputs [Abstract]
Adjustments for market conditions since appraisal	9
Other real estate | Consensus pricing | Maximum
Fair Value Inputs [Abstract]
Adjustments for market conditions since appraisal	116
Other real estate | Consensus pricing | Weighted Average
Fair Value Inputs [Abstract]
Adjustments for market conditions since appraisal	55
Level 3 | Mortgage interest rate lock agreements | Discounted cash flow
Fair Value Inputs [Abstract]
Assets, Fair Value	309
Level 3 | Mortgage forward sale agreements | Consensus pricing
Fair Value Inputs [Abstract]
Liabilities, Fair Value	(37)
Level 3 | Interest rate swap | Discounted cash flow
Fair Value Inputs [Abstract]
Liabilities, Fair Value	(2,349)
Level 3 | Collateralized debt obligations | Discounted cash flow
Fair Value Inputs [Abstract]
Assets, Fair Value	850
Nonrecurring | Level 3 | Impaired loans | Consensus pricing
Fair Value Inputs [Abstract]
Assets, Fair Value	8,245
Nonrecurring | Level 3 | Loan foreclosures | Consensus pricing
Fair Value Inputs [Abstract]
Assets, Fair Value	1,855
Nonrecurring | Level 3 | Other real estate | Consensus pricing
Fair Value Inputs [Abstract]
Assets, Fair Value	8,732