Subsequent Events - Additional Information (Detail) (Subsequent Event, USD $) In Millions, except Share data, unless otherwise specified	0 Months Ended
	Apr. 04, 2014
Common stock
Subsequent Event [Line Items]
Issuance of common stock related to IPO	4,000,000
Issuance of common stock price per share related to IPO	$ 26.00
Aggregate shares of common stock that convertible Series A preferred stock automatically converted into	19,284,113
IPO
Subsequent Event [Line Items]
Issuance of common stock related to IPO	4,000,000
Issuance of common stock price per share related to IPO	$ 26.00
Net proceeds from IPO	$ 95.5
IPO | Underwriting discounts and commissions
Subsequent Event [Line Items]
Offering expenses	6.5
IPO | Other Offering Costs
Subsequent Event [Line Items]
Offering expenses	$ 2.0
IPO | Selling stockholders
Subsequent Event [Line Items]
Issuance of common stock related to IPO	3,405,614
Number of options to purchase shares of common stock offered to underwriters	1,110,842