Sale of Business Line (Narrative) (Details) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Sale of Business Line [Abstract]
Gain on sale of business line, before tax	$ 0	$ 0	$ 6,265
Gain on sale of business line, after tax			$ 4,000
Earnings per share impact, gain on sale of business line			$ 0.24
Divestiture costs, before tax			$ 355
Divestiture costs, after tax			$ 227
Earnings per share impact, divestiture costs			$ 0.01
Net proceeds from the sale of business line	0	0	$ 7,205
Deferred revenue from sale of business line			900
Merchant referral revenue earned	180	$ 180	$ 180
Deferred merchant referral revenue remaining	$ 360