Stockholders' Equity - Additional Information (Details) - $ / shares	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Class Of Stock [Line Items]
Preferred stock, shares authorized	5,000,000
Preferred stock, par value	$ 0.0001
Preferred stock, shares outstanding	0
Preferred stock, shares issued	0
Common stock, shares outstanding		12,897,001
Conversion of stock, description	Each share of Class B common stock is convertible at any time at the option of the holder into one share of Class A common stock. In addition, each share of Class B common stock will convert automatically into one share of Class A common stock upon transfer, subject to certain exceptions, and upon the earlier of (1) the seventh anniversary of the closing of the IPO, and (2) the date on which the Class B common stock ceases to represent at least 25% of the outstanding common stock.
Class B Common Stock
Class Of Stock [Line Items]
Convertible preferred stock converted into common stock	18,239,475
Conversion of convertible securities ratio	100.00%
Common stock, shares authorized	44,000,000
Common stock, par value	$ 0.0001
Common stock, shares issued	31,437,741
Common stock, shares outstanding	31,437,741
Common stock, entitled for voting rights	ten votes per share
Percentage of outstanding common stock, minimum	25.00%
Class A Common Stock
Class Of Stock [Line Items]
Conversion of convertible securities ratio	100.00%
Common stock, shares authorized	451,000,000
Common stock, par value	$ 0.0001
Common stock, shares issued	6,900,000
Common stock, shares outstanding	6,900,000
Common stock, entitled for voting rights	one vote per share