Consolidated Statements of Operations - USD ($)	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Revenue:
Net revenue	$ 13,684,513	$ 12,132,770
Cost of revenue:
Payment processing service fees	2,691,224	2,588,204
Processing and service costs	3,500,668	3,237,940
Total cost of revenue	6,191,892	5,826,144
Selling, general and administrative expenses	5,480,714	4,470,400
Total operating expenses	11,672,606	10,296,544
Income from operations	2,011,907	1,836,226
Other (expense) income:
Interest expense	(14,676)	(14,613)
Interest income	424	426
Total other expense, net	(14,252)	(14,187)
Income from operations before provision for income taxes	1,997,655	1,822,039
Provision for income taxes	(237,350)	(110,413)
Net income	$ 1,760,305	$ 1,711,626
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)	50,771,451	53,800,606
Weighted-average common stock outstanding (diluted) (in shares)	52,062,499	54,448,382