v3.20.2
Summary of Significant Accounting Policies - Summary of Carrying Amount Reported on Condensed Consolidated Balance Sheets (Detail) - USD ($)
$ in Thousands
Jun. 30, 2020
Dec. 31, 2019
Summary Of Significant Accounting Policies [Abstract]    
Carrying amount $ 2,038,172 $ 1,989,451
Fair value $ 2,172,559 $ 2,047,860