Business Combinations (Pro Forma) (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Business Acquisition, Pro Forma Information
Operating revenue	$ 108,230	$ 79,103
Net Income (Loss) Attributable to Parent	$ 26,208	$ 26,427
Basic EPS	$ 0.83	$ 0.83
Diluted EPS	$ 0.83	$ 0.83
Revenue, Net, Increase (Decrease)	$ 29,127
Revenue, Net, Increase (Decrease), Percentage	36.80%
Parent, ItzCAsh, beBetter, YouFirst, WallStreet, PML, Via, and Transcorp [Member]
Business Acquisition, Pro Forma Information
Revenue, pro forma	$ 108,818	$ 111,849
Net income, pro forma	$ 26,267	$ 28,340
Basic EPS, pro forma	$ 0.83	$ 0.89
Diluted EPS, pro forma	$ 0.83	$ 0.89
Business Acquisition, Pro Forma Revenue, Increase (Decrease), Percentage	(2.70%)