Common Stock and Share-Based Compensation - Summary of Stock Option Activity (Detail)	3 Months Ended
	Mar. 31, 2017 USD ($) $ / shares shares
Options
Options outstanding, beginning balance, in shares | shares	2,038,829
Forfeited and canceled, in shares | shares	(487,971)
Exercised, in shares | shares	(31,567)
Options outstanding, ending balance, in shares | shares	1,519,291
Weighted Average Exercise Price
Options outstanding, beginning balance, Weighted average exercise price (in dollars per share) | $ / shares	$ 19.78
Forfeited and canceled, Weighted average exercise price (in dollars per share) | $ / shares	26.07
Exercised, Weighted average exercise price (in dollars per share) | $ / shares	17.26
Options outstanding, ending balance, Weighted average exercise price (in dollars per share) | $ / shares	$ 17.81
Options outstanding and exercisable, ending balance, Weighted Average Contractual Life	1 year 11 months 27 days
Options outstanding and exercisable, ending balance, Aggregate Intrinsic Value | $	$ 4,957,607