Fair Value (Fair Value Inputs, Assets, Quantitative Information) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Impaired loans with specific valuation allowances	$ 6,701	$ 4,217
Other real estate owned	1,677	3,274	$ 3,309	$ 3,144
Level 3
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Impaired loans with specific valuation allowances	66	50
Other real estate owned	1,677	3,274
Impaired loans | Level 3
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Impaired loans with specific valuation allowances	$ 66	$ 50
Valuation Techniques	Market approach	Market approach
Unobservable Input	Appraised value less selling costs of 5% to 10% Additional discounts of 70% to 100% 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
Impaired loans | Minimum | Level 3
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Selling costs (as a percent)	5.00%	5.00%
Discount to appraised value (as a percent)	5.00%	5.00%
Impaired loans | Maximum | Level 3
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Selling costs (as a percent)	10.00%	10.00%
Discount to appraised value (as a percent)	50.00%	50.00%
Other real estate owned | Level 3
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Other real estate owned	$ 1,677	$ 3,274
Valuation Techniques	Market approach	Market approach
Unobservable Input	Appraised value less selling costs of 5% to 10%	Appraised value less selling costs of 5% to 10%
Other real estate owned | Minimum | Level 3
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Selling costs (as a percent)	5.00%	5.00%
Other real estate owned | Maximum | Level 3
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Selling costs (as a percent)	10.00%	10.00%