Fair Value Measurements (Fair Value Inputs, Assets, Quantitative Information) (Details) (USD $) In Thousands, unless otherwise specified							3 Months Ended	12 Months Ended	3 Months Ended	12 Months Ended	3 Months Ended	12 Months Ended	3 Months Ended	12 Months Ended	3 Months Ended	12 Months Ended	3 Months Ended	12 Months Ended
	Mar. 31, 2014	Dec. 31, 2013	Mar. 31, 2013	Dec. 31, 2012	Mar. 31, 2014 Level 3	Dec. 31, 2013 Level 3	Mar. 31, 2014 Impaired Loans Level 3	Dec. 31, 2013 Impaired Loans Level 3	Mar. 31, 2014 Impaired Loans Level 3 Minimum	Dec. 31, 2013 Impaired Loans Level 3 Minimum	Mar. 31, 2014 Impaired Loans Level 3 Maximum	Dec. 31, 2013 Impaired Loans Level 3 Maximum	Mar. 31, 2014 Other Real Estate Owned Level 3	Dec. 31, 2013 Other Real Estate Owned Level 3	Mar. 31, 2014 Other Real Estate Owned Level 3 Minimum	Dec. 31, 2013 Other Real Estate Owned Level 3 Minimum	Mar. 31, 2014 Other Real Estate Owned Level 3 Maximum	Dec. 31, 2013 Other Real Estate Owned Level 3 Maximum
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Impaired loans with specific valuation allowances	$ 8,571	$ 8,887			$ 8,571	$ 8,887	$ 8,571	$ 8,887
Other real estate owned	$ 2,995	$ 3,144	$ 5,684	$ 6,552	$ 2,995	$ 3,144							$ 2,995	$ 3,144
Valuation Techniques							Market approach	Market approach					Market approach	Market approach
Unobservable Input							Appraised value less selling costs of 5% to 10% Additional discounts of 5% to 50% to appraised value to reflect liquidation value	Appraised value less selling costs of 5% to 10% Additional discounts of 5% to 50% to appraised value to reflect liquidation value					Appraised value less selling costs of 5% to 10%	Appraised value less selling costs of 5% to 10%
Selling costs (as a percent)									5.00%	5.00%	10.00%	10.00%			5.00%	5.00%	10.00%	10.00%
Discount to appraised value (as a percent)									5.00%	5.00%	50.00%	50.00%