Fair Value of Financial Instruments (Servicing Assets) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Default rate assumption, default rate increase of 25%	25.00%
Default rate assumption, default rate increase of 50%	50.00%
Cost to service assumption, cost to service increase by 25%	25.00%
Cost to service assumption, cost to service increase by 50%	50.00%
Default rate increase	$ (98)	$ (145)
Default rate increase	(188)	(282)
Cost to service increase	(60)	(79)
Cost to service increase	$ (120)	$ (159)