Fair Value of Financial Instruments (Servicing Assets) (Details) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Mar. 31, 2016	Dec. 31, 2015
Fair Value Disclosures [Abstract]
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	$ (145)	$ (145)
Default rate increase	(280)	(282)
Cost to service increase	(79)	(79)
Cost to service increase	$ (158)	$ (159)