Fair Value Measurements Quantitative information about Level III fair value measurements (Details) (Impaired Loans [Member], Discounted appraised value [Member], Level III [Member], USD $) In Thousands, unless otherwise specified	3 Months Ended	12 Months Ended
	Mar. 31, 2014	Dec. 31, 2013
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Impaired Loans, Fair Value	$ 1,695	$ 1,858
Minimum [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Discount rate	0.00%	0.00%
Maximum [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Discount rate	100.00%	100.00%
Weighted Average [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Discount rate	2.00%	4.00%