Stockholders' Equity - Summary of Option Activity under 2010 Plan and 2013 Plan (Details) - USD ($)	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
Options
Number of Shares, Options outstanding at beginning of period	122,000
Number of Shares, Options granted	347,225
Number of Shares, Options exercised	0
Number of Shares, Options cancelled/forfeited	(5,625)
Number of Shares, Options outstanding at end of period	463,600	122,000
Number of Shares, Options exercisable at end of period	139,634
Weighted Average Exercise Price, Options
Weighted Average Exercise Price, Options outstanding at beginning of period	$ 2.55
Weighted Average Exercise Price, Options granted	14.10
Weighted Average Exercise Price, Options exercised	0
Weighted Average Exercise Price, Options cancelled/forfeited	2.55
Weighted Average Exercise Price, Options outstanding at end of period	11.23	$ 2.55
Weighted Average Exercise Price, Options exercisable at end of period	$ 3.49
Weighted Average Remaining Contract Term/Aggregate Intrinsic Value, Options
Weighted Average Remaining Contractual Term, Options outstanding at beginning of period	9 years 6 months	8 years 9 months 18 days
Weighted Average Remaining Contractual Term, Options exercisable at end of period	8 years 10 months 24 days
Aggregate Intrinsic Value, Options outstanding at end of period	$ 1,752,470
Aggregate Intrinsic Value, Options exercisable at end of period	$ 1,448,223