Consolidated Statements of Income and Comprehensive Income (Unaudited) (Parenthetical) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Income Statement [Abstract]
Payment processing revenue from affiliates	$ 7,644	$ 7,458	$ 15,016	$ 14,706
Business solutions revenue from affiliates	35,568	34,243	69,258	67,601
Other comprehensive income, income tax expense	$ 26	$ 48	$ 33	$ 54