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Consolidated Condensed Statements of Income and Comprehensive Income (Unaudited) (Parenthetical) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2015
Dec. 31, 2014
Dec. 31, 2013
Income Statement [Abstract]      
Payment processing revenue from affiliates $ 30,504 $ 27,094 $ 26,747
Business solutions revenue from affiliates 138,929 137,242 140,693
Other comprehensive income, income tax expense $ 8 $ 4 $ 59