Fair Value of Financial Instruments and Fair Value Measurements, Quantitative Information (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2013
Impaired Loans [Member] | Commercial [Member] | Nonrecurring [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Assets measured at fair value	1,009
Impaired Loans [Member] | Sales Comparison [Member] | Commercial [Member] | Nonrecurring [Member] | Minimum [Member]
Unobservable Inputs [Abstract]
Adjustment for Differences Between the Comparable Sales (in hundredths)	0.00%
Management Adjustments for Age of Appraisals and/or Current Market Conditions (in hundredths)	0.00%
Impaired Loans [Member] | Sales Comparison [Member] | Commercial [Member] | Nonrecurring [Member] | Maximum [Member]
Unobservable Inputs [Abstract]
Adjustment for Differences Between the Comparable Sales (in hundredths)	0.00%
Management Adjustments for Age of Appraisals and/or Current Market Conditions (in hundredths)	80.00%
Impaired Loans [Member] | Sales Comparison [Member] | Commercial [Member] | Nonrecurring [Member] | Weighted Average [Member]
Unobservable Inputs [Abstract]
Adjustment for Differences Between the Comparable Sales (in hundredths)	0.00%
Management Adjustments for Age of Appraisals and/or Current Market Conditions (in hundredths)	40.00%
Real Estate [Member] | Commercial Construction [Member] | Nonrecurring [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Assets measured at fair value	3,197
Real Estate [Member] | Residential Real Estate [Member] | Nonrecurring [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Assets measured at fair value	4,798
Real Estate [Member] | Commercial Real Estate [Member] | Nonrecurring [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Assets measured at fair value	8,491
Real Estate [Member] | Sales Comparison [Member] | Commercial Construction [Member] | Nonrecurring [Member] | Minimum [Member]
Unobservable Inputs [Abstract]
Adjustment for Differences Between the Comparable Sales (in hundredths)	(16.00%)
Management Adjustments for Age of Appraisals and/or Current Market Conditions (in hundredths)	0.00%
Real Estate [Member] | Sales Comparison [Member] | Commercial Construction [Member] | Nonrecurring [Member] | Maximum [Member]
Unobservable Inputs [Abstract]
Adjustment for Differences Between the Comparable Sales (in hundredths)	45.00%
Management Adjustments for Age of Appraisals and/or Current Market Conditions (in hundredths)	10.00%
Real Estate [Member] | Sales Comparison [Member] | Commercial Construction [Member] | Nonrecurring [Member] | Weighted Average [Member]
Unobservable Inputs [Abstract]
Adjustment for Differences Between the Comparable Sales (in hundredths)	14.50%
Management Adjustments for Age of Appraisals and/or Current Market Conditions (in hundredths)	5.00%
Real Estate [Member] | Sales Comparison [Member] | Residential Real Estate [Member] | Nonrecurring [Member] | Minimum [Member]
Unobservable Inputs [Abstract]
Adjustment for Differences Between the Comparable Sales (in hundredths)	(0.40%)
Management Adjustments for Age of Appraisals and/or Current Market Conditions (in hundredths)	0.00%
Real Estate [Member] | Sales Comparison [Member] | Residential Real Estate [Member] | Nonrecurring [Member] | Maximum [Member]
Unobservable Inputs [Abstract]
Adjustment for Differences Between the Comparable Sales (in hundredths)	168.20%
Management Adjustments for Age of Appraisals and/or Current Market Conditions (in hundredths)	50.00%
Real Estate [Member] | Sales Comparison [Member] | Residential Real Estate [Member] | Nonrecurring [Member] | Weighted Average [Member]
Unobservable Inputs [Abstract]
Adjustment for Differences Between the Comparable Sales (in hundredths)	83.90%
Management Adjustments for Age of Appraisals and/or Current Market Conditions (in hundredths)	25.00%
Real Estate [Member] | Sales Comparison [Member] | Commercial Real Estate [Member] | Nonrecurring [Member] | Minimum [Member]
Unobservable Inputs [Abstract]
Adjustment for Differences Between the Comparable Sales (in hundredths)	(7.40%)
Management Adjustments for Age of Appraisals and/or Current Market Conditions (in hundredths)	0.00%
Real Estate [Member] | Sales Comparison [Member] | Commercial Real Estate [Member] | Nonrecurring [Member] | Maximum [Member]
Unobservable Inputs [Abstract]
Adjustment for Differences Between the Comparable Sales (in hundredths)	52.00%
Management Adjustments for Age of Appraisals and/or Current Market Conditions (in hundredths)	30.00%
Real Estate [Member] | Sales Comparison [Member] | Commercial Real Estate [Member] | Nonrecurring [Member] | Weighted Average [Member]
Unobservable Inputs [Abstract]
Adjustment for Differences Between the Comparable Sales (in hundredths)	22.30%
Management Adjustments for Age of Appraisals and/or Current Market Conditions (in hundredths)	15.00%
Real Estate [Member] | Income Approach [Member] | Commercial Construction [Member] | Nonrecurring [Member] | Weighted Average [Member]
Unobservable Inputs [Abstract]
Capitalization Rate (in hundredths)	8.50%
Discount Rate (in hundredths)	3.00%
Real Estate [Member] | Income Approach [Member] | Commercial Real Estate [Member] | Nonrecurring [Member] | Weighted Average [Member]
Unobservable Inputs [Abstract]
Capitalization Rate (in hundredths)	10.50%
Discount Rate (in hundredths)	5.13%
Other Real Estate Owned [Member] | Nonrecurring [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Assets measured at fair value	9,157
Other Real Estate Owned [Member] | Sales Comparison [Member] | Nonrecurring [Member] | Minimum [Member]
Unobservable Inputs [Abstract]
Adjustment for Differences Between the Comparable Sales (in hundredths)	(35.00%)
Management Adjustments for Age of Appraisals and/or Current Market Conditions (in hundredths)	3.10%
Other Real Estate Owned [Member] | Sales Comparison [Member] | Nonrecurring [Member] | Maximum [Member]
Unobservable Inputs [Abstract]
Adjustment for Differences Between the Comparable Sales (in hundredths)	129.50%
Management Adjustments for Age of Appraisals and/or Current Market Conditions (in hundredths)	87.24%
Other Real Estate Owned [Member] | Sales Comparison [Member] | Nonrecurring [Member] | Weighted Average [Member]
Unobservable Inputs [Abstract]
Adjustment for Differences Between the Comparable Sales (in hundredths)	47.25%
Management Adjustments for Age of Appraisals and/or Current Market Conditions (in hundredths)	38.57%
Other Real Estate Owned [Member] | Income Approach [Member] | Nonrecurring [Member] | Weighted Average [Member]
Unobservable Inputs [Abstract]
Discount Rate (in hundredths)	3.00%
Asset-Backed Securities [Member] | Recurring [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Assets measured at fair value	132
Asset-Backed Securities [Member] | Discounted Cash Flow Member] | Recurring [Member] | Minimum [Member]
Unobservable Inputs [Abstract]
Discount Rate (in hundredths)	2.95%
Asset-Backed Securities [Member] | Discounted Cash Flow Member] | Recurring [Member] | Maximum [Member]
Unobservable Inputs [Abstract]
Discount Rate (in hundredths)	3.42%
Asset-Backed Securities [Member] | Discounted Cash Flow Member] | Recurring [Member] | Weighted Average [Member]
Unobservable Inputs [Abstract]
Discount Rate (in hundredths)	3.19%
State, County and Municipal [Member] | Recurring [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Assets measured at fair value	1,009
State, County and Municipal [Member] | Discounted Cash Flow Member] | Recurring [Member] | Weighted Average [Member]
Unobservable Inputs [Abstract]
Discount Rate (in hundredths)		[1]

[1] The Company relies on a third-party pricing service to value its municipal securities. The details of the unobservable inputs and other adjustments used by the third-party pricing service were not readily available to the Company.