Equity - Additional Information (Detail) - USD ($) $ in Thousands		1 Months Ended
	Dec. 11, 2020	Jun. 30, 2018	Dec. 31, 2016	Dec. 31, 2020
Class Of Stock [Line Items]
Stock repurchase program period			3 years
Stock repurchase program, authorized amount			$ 100,000
Authorized increase and extension in stock repurchase program amount		$ 300,000
Stock repurchase program extended expiration date		2020-12
Remaining authorized repurchase amount				$ 74,226
2020 Stock Repurchase Program
Class Of Stock [Line Items]
Stock repurchase program period	3 years
Stock repurchase program expiration date	Dec. 15, 2023
Maximum | 2020 Stock Repurchase Program
Class Of Stock [Line Items]
Stock repurchase program, authorized to repurchase amount	150,000