General - Additional Information (Detail) (USD $) In Thousands, except Share data, unless otherwise specified	0 Months Ended
	Mar. 05, 2014	Mar. 31, 2014 Subsidiary	Mar. 13, 2014	Dec. 31, 2013	Dec. 31, 2012
Accounting Policies and General Information [Line Items]
Number of subsidiaries		5
Stockholders' equity (deficiency)		$ 102,267		$ (43,008)	$ (37,448)
Common stock shares sold to public		24,453,983		3,953,314
Aggregate net proceeds received	$ 106,071
Convertible preferred stock converted into common stock	15,082,141
Convertible preferred stock converted into warrants to purchase common stock	122,572
Warrants exercised in net share settlement, shares issued			107,217
IPO [Member]
Accounting Policies and General Information [Line Items]
Common stock shares sold to public	5,300,436
Common stock shares pursuant to the full exercise of an over-allotment option granted to the underwriters	500,436