Schedule of Quantitative Information, Unobservable Inputs (Details) (USD $) In Thousands, unless otherwise specified			12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2012 Consensus pricing Level 3		Dec. 31, 2012 Market comparable properties Level 3	Dec. 31, 2012 Minimum Consensus pricing Level 3	Dec. 31, 2012 Minimum Market comparable properties Level 3	Dec. 31, 2012 Maximum Consensus pricing Level 3	Dec. 31, 2012 Maximum Market comparable properties Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Pooled trust preferred securities			$ 19,542	[1]
Pooled trust preferred securities						42.40%
Pooled trust preferred securities								83.40%
Impaired loans (collateral-dependent)	46,584	52,920			10,292
Impaired loans (collateral-dependent)							10.00%
Impaired loans (collateral-dependent)									10.00%
Other real estate owned					$ 2,492
Other real estate owned							10.00%
Other real estate owned									10.00%
Weighting of pricing, average			57.90%		10.00%

[1] Consensus pricing is provided by a widely used pricing source.