Fair Value of Financial Instruments (Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation) (Details) - Significant Other Unobservable Inputs (Level 3) [Member] - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Beginning Balance	$ 832	$ 1,501
Principal Paydowns	(415)	(614)
Ending Balance	344	832
Total Gains - Realized/Unrealized [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Included in earnings
Included in other comprehensive loss	13	48
Total Losses - Realized/Unrealized [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Included in other comprehensive loss	$ (86)	$ (103)