Consolidated Statements of Operations - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Revenue:
Net revenue	$ 13,621,239	$ 12,618,413	$ 40,409,128	$ 37,434,542
Cost of revenue:
Payment processing service fees	2,781,289	2,692,090	8,207,202	7,871,179
Processing and service costs	2,878,088	3,776,232	9,902,879	10,399,830
Total cost of revenue	5,659,377	6,468,322	18,110,081	18,271,009
Selling, general and administrative expenses	5,222,560	5,657,740	15,908,166	14,840,844
Restructuring charges	229,121	283,726	354,389	283,726
Total operating expenses	11,111,058	12,409,788	34,372,636	33,395,579
Income from operations	2,510,181	208,625	6,036,492	4,038,963
Other income (expense):
Interest expense	(88,669)	(10,372)	(186,366)	(38,815)
Interest income	428	392	1,250	1,183
Other income	93,016		93,016
Total other income (expense), net	4,775	(9,980)	(92,100)	(37,632)
Income from operations before provision for income taxes	2,514,956	198,645	5,944,392	4,001,331
Provision for income taxes	(289,543)	(92,674)	(675,951)	(308,406)
Net income	$ 2,225,413	$ 105,971	$ 5,268,441	$ 3,692,925
Basic net income per share applicable to common stockholders ( in dollars per share)	$ 0.04	$ 0.00	$ 0.10	$ 0.06
Diluted net income per share applicable to common stockholders (in dollars per share)	$ 0.04	$ 0.00	$ 0.09	$ 0.06
Weighted-average common stock outstanding (basic) (in shares)	49,179,596	51,360,758	49,848,634	52,985,106
Weighted-average common stock outstanding (diluted) (in shares)	51,254,223	52,384,391	52,002,249	53,611,968