CONDENSED STATEMENTS OF OPERATIONS AND COMPREHENSIVE INCOME - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
STATEMENTS OF OPERATIONS AND COMPREHENSIVE INCOME
Revenue	$ 8,193,616	$ 3,811,947	$ 22,794,464	$ 12,069,553
Cost of revenue	1,590,222	959,593	4,340,429	2,485,704
Gross profit	6,603,394	2,852,354	18,454,035	9,583,849
Operating expenses:
General and administrative	1,675,784	1,261,872	5,629,071	3,485,051
Sales and marketing	1,206,203	880,711	3,399,581	2,505,019
Research and development	518,562	303,463	1,264,310	753,267
Total operating expenses	3,400,549	2,446,046	10,292,962	6,743,337
Income from operations	3,202,845	406,308	8,161,073	2,840,512
Other income (expense), net	64,709	(8,808)	157,660	6,275
Income before provision for income taxes	3,267,554	397,500	8,318,733	2,846,787
Provision for income taxes	1,400,406	160,143	3,193,519	1,067,242
Net income	1,867,148	237,357	5,125,214	1,779,545
Other comprehensive (loss) income:
Change in fair value of available-for-sale securities, net of tax (benefit) expense of $(6,369) and $70 for the three months ended September 30, 2015 and 2014, respectively, and $(8,833) and $(2,681) for nine months ended September 30, 2015 and 2014, respectively	(10,341)	130	(14,343)	3,832
Realized gain on available-for-sale securities reclassified to net income, net of tax of $70 and $2,560 for the three and nine months ended September 30, 2014, respectively		(130)		(4,756)
Comprehensive income	$ 1,856,807	$ 237,357	$ 5,110,871	$ 1,778,621
Net income per share:
Basic (in dollars per share)	$ 0.17	$ 0.02	$ 0.47	$ 0.22
Diluted (in dollars per share)	$ 0.15	$ 0.02	$ 0.42	$ 0.18
Weighted average shares outstanding:
Basic (in shares)	11,028,551	10,112,139	10,970,189	8,048,779
Diluted (in shares)	12,382,531	11,269,358	12,294,307	9,688,602