Description of Business - Additional Information (Details)			12 Months Ended
	May 11, 2015 USD ($) $ / shares shares	Apr. 27, 2015	Dec. 31, 2016 Segment shares	Dec. 31, 2015 USD ($)
Significant Accounting Policies [Line Items]
Number of operating segments | Segment			1
Reverse stock split of outstanding common stock		0.0093
Gross proceeds from initial public offering				$ 47,654,190
IPO
Significant Accounting Policies [Line Items]
Issuance of common stock from initial public offering, shares | shares	3,570,000
Common stock, at the initial public offering price per shares | $ / shares	$ 14.00
Gross proceeds from initial public offering	$ 50,000,000
Net proceeds from initial public offering after underwriters' fees, commissions and offering costs	$ 45,400,000
Preferred stock, shares outstanding | shares			0
Over-Allotment Option
Significant Accounting Policies [Line Items]
Issuance of common stock from initial public offering, shares | shares	90,076
Proceeds from issuance of common stock	$ 1,300,000
Sales Revenue, Net | Customer Concentration Risk | Customers Located Outside Of United States
Significant Accounting Policies [Line Items]
Sales revenue percentage			16.00%	13.00%