Stock-Based Compensation - Additional Information (Detail) - USD ($)		3 Months Ended
	Jan. 04, 2016	Mar. 31, 2016	Mar. 31, 2015	Dec. 31, 2015
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock options granted		533,000
Number of options exercised		0
Options to purchase common stock, outstanding		2,176,000	1,637,000	1,657,000
Weighted average remaining contractual term		8 years 2 months 12 days	8 years 4 months 24 days
Weighted average exercise price		$ 15.16	$ 13.41	$ 14.28
Weighted average grant date fair value of options granted		$ 12.82	$ 23.27
Unrecognized stock-based compensation expense		$ 10,838,000	$ 12,643,000
Unrecognized compensation costs, weighted-average recognition periods		2 years 10 months 24 days	3 years 2 months 12 days
Performance-Based Awards [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Aggregate number of restricted common stock units granted under performance-based vesting		189,000
Performance based RSUs vested		0
Restricted Stock Units (RSUs) [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Aggregate number of restricted common stock units granted under performance-based vesting	189,300
Grant date fair value of restricted common stock units under performance-based vesting	$ 3,445,000