Equity Incentive Plans - Additional Information (Detail) - shares	1 Months Ended	12 Months Ended
	Feb. 28, 2011	Dec. 31, 2016
Omnibus Securities and Incentive Plan 2006
Equity Incentive Plan [Line Items]
Common stock reserved for issuance		837
Stock Incentive Plan 2010
Equity Incentive Plan [Line Items]
Common stock reserved for issuance		16,078
Stock option grant, expiry period from grant date	10 years
Common stock, available for grant		160,873
Employee Stock Purchase Plan
Equity Incentive Plan [Line Items]
Common stock reserved for issuance		4,285
Common stock, available for grant		3,802
Share price as percentage of fair market value		85.00%