Fair Value Measurements Quantitative Inputs - Nonrecurring (Details) - Fair Value, measurements, nonrecurring [Member] - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2015
Fair Value Measurements, Nonrecurring, Valuation Techniques [Line Items]
Collateral dependent impaired loans	$ 1,266	$ 98
Other real estate owned	2,235	0
Fair value, inputs, level 3 [Member]
Fair Value Measurements, Nonrecurring, Valuation Techniques [Line Items]
Collateral dependent impaired loans	1,266	98
Other real estate owned	2,235	0
Evaluation of collateral [Member] | Estimate of fair value, fair value disclosure [Member] | Collateral dependent impaired loans [Member] | Fair value, inputs, level 3 [Member]
Fair Value Measurements, Nonrecurring, Valuation Techniques [Line Items]
Collateral dependent impaired loans	1,266	$ 98
Market Approach Valuation Technique [Member] | Appraisal adjustment [Member] | Other real estate owned [Member] | Fair value, inputs, level 3 [Member]
Fair Value Measurements, Nonrecurring, Valuation Techniques [Line Items]
Other real estate owned	$ 2,235
Market Approach Valuation Technique [Member] | Appraisal adjustment [Member] | Maximum [Member] | Other real estate owned [Member] | Fair value, inputs, level 3 [Member]
Fair Value Measurements, Nonrecurring, Valuation Techniques [Line Items]
Fair Value Inputs, Discount Rate	25.00%
Market Approach Valuation Technique [Member] | Appraisal adjustment [Member] | Minimum [Member] | Other real estate owned [Member] | Fair value, inputs, level 3 [Member]
Fair Value Measurements, Nonrecurring, Valuation Techniques [Line Items]
Fair Value Inputs, Discount Rate	0.00%
Market Approach Valuation Technique [Member] | Appraisal adjustment [Member] | Weighted Average [Member] | Other real estate owned [Member] | Fair value, inputs, level 3 [Member]
Fair Value Measurements, Nonrecurring, Valuation Techniques [Line Items]
Fair Value Inputs, Discount Rate	25.00%