Organization and Business - Additional Information (Detail) - USD ($) $ in Thousands	1 Months Ended	3 Months Ended
	Jun. 29, 2016	Jun. 30, 2015	Sep. 30, 2016	Dec. 31, 2015	Sep. 30, 2015	Dec. 31, 2014
Organization and Nature of Operations [Line Items]
Cash			$ 11,299	$ 8,854	$ 9,855	$ 13,859
Stock issued during period, shares, new issues	5,882,352
Stock issued during period, value, new issues	$ 10,000
Proceeds from issuance initial public offering	9,300
Debt Issuance Costs, Net	$ 300
Common Stock
Organization and Nature of Operations [Line Items]
Stock To Be Issued		25,000,000
Warrant
Organization and Nature of Operations [Line Items]
Stock issued during period, shares, new issues	2,941,176