The number of defendants being held before trial since New Jersey overhauled its bail system last year dropped by 20 percent, but the judge overseeing the program says it faces financial difficulties.

A report submitted last week by Judge Glenn Grant, who runs the state's court system, also shows the program faces financial difficulties because it relies on court fees instead of a "stable sustainable funding stream."

Proponents say the reforms championed by former Republican Gov. Chris Christie keep violent offenders detained until trial while providing poor, low-level defendants the opportunity to be freed.

But critics — including some lawmakers, law enforcement officials and the bail bond industry — say it has led to the quick release of some who weren't deemed a threat but were soon re-arrested on new charges.

The data shows 44,319 people were issued complaint warrants in New Jersey last year. Prosecutors sought to have 19,366 defendants detained until trial, but only 8,043 of those people were ordered held.

That means the state's pretrial jail population dropped by 20 percent from January 2017 to January 2018, and by 35 percent from January 2015 to January 2018.

At least two lawsuits have been filed seeking to overturn the changes, including one from a group backed by reality TV star Dog the Bounty Hunter.