Stockholders' Equity (Deficit) (Tables)

12 Months Ended

Dec. 31, 2015

Disclosure of Compensation Related Costs, Share-based Payments [Abstract]

Summary of Stock Based Compensation Expense

Stock compensation expense was allocated between departments as follows;

	Year ended
	December 31, 2015		December 31, 2014
Research & Development	$	148,948	$	64,020
Sales & Marketing	62,533		8,335
General & Administrative	730,888		273,080
Total	$	942,369	$	345,435

Schedule of Fair Value of Award Granted Using Black-Scholes Option Pricing Model

The fair value of each award granted was estimated on the date of grant using the Black-Scholes option pricing model with the following assumptions for the year ended December 31, 2015:

	Year Ended
	December 31, 2015	December 31, 2014
Expected life (years)	6.1	5.8-6.1
Risk-free interest rate	1.6%-1.7%	1.6%-1.8%
Volatility	56% - 66%	43% - 59%
Dividend rate	—%	—%

Summary of Stock Option Transactions

The following table summarizes stock option transactions for the years ended December 31, 2015 and 2014 as issued under the Plans:

	Shares Available for Grant		Number of Options Outstanding		Weighted-Average Exercise Price per Share		Weighted Average Remaining Contractual Term
							(in years)
Balance at December 31, 2013	124,824		239,606		$	3.36
2014 Plan authorized	1,437,165		—		—
Closed 2010 Plan	(123,523	)	—		—
Options granted	(926,384	)	926,384		7.15
Options canceled/forfeited	93,979		(93,979	)	6.75
Balance at December 31, 2014	606,061		1,072,011		6.34		8.67
Additional shares authorized	270,764		—		—
Options granted	(955,713	)	955,713		3.08
Options exercised	—		(83,848	)	3.50
Options canceled/forfeited	85,037		(85,037	)	5.03
Balance at December 31, 2015	6,149		1,858,839		$	4.82	8.75
Options vested at December 31, 2014	—		578,889		$	5.58	7.46
Options vested and expected to vest at December 31, 2014	—		1,072,011		$	6.34	8.67
Options vested at December 31, 2015	—		922,927		$	5.06	7.47
Options vested and expected to vest at December 31, 2015	—		1,858,839		$	4.82	8.75