Stockholders' Equity - Summary of Stock Option Plan Activity (Detail) - $ / shares	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Number of Options
Number of Options, Outstanding at Beginning of the year	94,500
Number of Options, Granted	172,504	94,500
Number of Options, Forfeited	(51,636)
Number of Options, Outstanding at End of Year	215,368	94,500
Number of Options, Exercisable at End of Year	94,500	6,038
Weighted Average Exercise Price
Weighted Average Exercise Price, Outstanding at Beginning Balance	$ 10.00
Weighted Average Exercise Price, Granted	12.14	$ 10.00
Weighted Average Exercise Price, Forfeited	12.50
Weighted Average Exercise Price, Outstanding at Ending Balance	11.38	10.00
Weighted Average Exercise Price, Exercisable	$ 10.00	$ 10.00