Consolidated Statements of Income - USD ($)	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Revenue:
Net revenue	$ 12,728,885	$ 13,684,513
Cost of revenue:
Payment processing service fees	2,115,609	2,691,224
Processing and service costs	3,192,073	3,500,668
Total cost of revenue	5,307,682	6,191,892
Selling, general and administrative expenses	5,287,338	5,480,714
Restructuring charges	65,458
Total operating expenses	10,660,478	11,672,606
Income from operations	2,068,407	2,011,907
Other (expense) income:
Interest expense	(116,332)	(14,676)
Interest income	523	424
Total other expense, net	(115,809)	(14,252)
Income from operations before provision for income taxes	1,952,598	1,997,655
Provision for income taxes	(535,058)	(237,350)
Net income	$ 1,417,540	$ 1,760,305
Basic net income per share applicable to common stockholders ( in dollars per share)	$ 0.03	$ 0.03
Diluted net income per share applicable to common stockholders (in dollars per share)	$ 0.03	$ 0.03
Weighted-average common stock outstanding (basic) (in shares)	48,917,601	50,771,451
Weighted-average common stock outstanding (diluted) (in shares)	51,353,807	52,062,499