Stockholders' Equity - Stock Option Activity (Details)	9 Months Ended
	Sep. 30, 2016 USD ($) $ / shares shares
Stockholders’ Equity
Shares available for issuance under omnibus incentive compensation plan	2,718,919
Number of shares
Beginning balance outstanding (in shares)	998,198
Granted (in shares)	786,654
Exercised (in shares)	(4,000)
Forfeited (in shares)	(3,996)
Ending balance outstanding (in shares)	1,776,856
Vested and expected to vest (in shares)	1,770,687
Exercisable (in shares)	747,830
Weighted average exercise price
Beginning balance outstanding (in dollars per share) | $ / shares	$ 3.94
Granted (in dollars per share) | $ / shares	8.00
Exercised (in dollars per share) | $ / shares	3.67
Forfeited (in dollars per share) | $ / shares	6.47
Ending balance outstanding (in dollars per share) | $ / shares	5.73
Vested and expected to vest (in dollars per share) | $ / shares	5.75
Exercisable (in dollars per share) | $ / shares	$ 3.31
Weighted average contractual term
Outstanding (in years)	8 years 9 months 18 days
Vested and expected to vest (in years)	8 years 9 months 18 days
Exercisable (in years)	8 years
Aggregate intrinsic value
Outstanding (in dollars) | $	$ 4,001,441
Vested and expected to vest (in dollars) | $	3,960,849
Exercisable (in dollars) | $	$ 3,436,797