XML 80 R65.htm IDEA: XBRL DOCUMENT v3.19.1
Reconciliation of Unrecognized Tax Benefits (Parenthetical) (Detail) - USD ($)
$ in Thousands
Dec. 31, 2018
Dec. 31, 2017
Income Tax Disclosure [Abstract]    
Unrecognized tax benefit $ 18,413 $ 5,451