Stockholders' Equity - Schedule of Stock Option Activity (Detail) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2020 USD ($) $ / shares shares
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]
Number of Shares, Outstanding at December 31, 2019 | shares	436
Number of Shares, Exercised | shares	(17)
Number of Shares, Forfeited | shares	(33)
Number of Shares, Outstanding at March 31, 2020 | shares	386
Number of Shares, Exercisable at March 31, 2020 | shares	378
Number of Shares, Vested and expected to vest at March 31,2020 | shares	386
Weighted - Average Exercise Price Per Share, Outstanding, Beginning balance | $ / shares	$ 35.62
Weighted - Average Exercise Price Per Share, Exercised | $ / shares	33.53
Weighted - Average Exercise Price Per Share, Forfeited | $ / shares	38.46
Weighted - Average Exercise Price Per Share, Outstanding, Ending balance | $ / shares	35.47
Weighted - Average Exercise Price Per Share, Exercisable at March 31, 2020 | $ / shares	35.42
Weighted - Average Exercise Price Per Share, Vested and expected to vest at March 31,2020 | $ / shares	$ 35.47
Weighted - Average Remaining Contractual Term, Outstanding at March 31, 2020	3 years 6 months 14 days
Weighted - Average Remaining Contractual Term, Exercisable at March 31, 2020	3 years 6 months 21 days
Weighted - Average Remaining Contractual Term, Vested and expected to vest at March 31, 2020	3 years 6 months 14 days
Aggregate Intrinsic Value, Outstanding at March 31, 2020 | $	$ 4
Aggregate Intrinsic Value, Exercisable at March 31, 2020 | $	4
Aggregate Intrinsic Value, Vested and expected to vest at March 31, 2020 | $	$ 4