go so far as (doing something)
go so far as (doing something)
To reach the point of doing something extreme, risky, or controversial. Often used in the negative. Although I wouldn't go so far as calling him a coward, he definitely likes to avoid confrontation when he can. They went so far as threatening us with legal action if we didn't delete the video in question.
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.