On Michael Cohen, Donald Trump's former lawyer and self-described "fixer," Judge Engoron wrote in his ruling that he found the star witness to be a credible witness despite having been convicted of perjury.

"His testimony was significantly compromised by his having pleaded guilty to perjury and by some seeming contradictions in what he said at trial," Engoron wrote. "However, carefully parsed, he testified that although Donald Trump did not expressly direct him to reverse engineer financial statements, he ordered him to do so indirectly, in his 'mob voice.'"

Engoron continued that although the "animosity between the witness and the defendant is palpable, providing Cohen with an incentive to lie, the Court found his testimony credible, based on the relaxed manner in which he testified, the general plausibility of his statements, and, most importantly, the way his testimony was corroborated by other trial evidence."

A "less-forgiving factfinder" might have come to a different conclusion and not believed "a single word of a convicted perjurer," Engoron wrote.

"This factfinder does not believe that pleading guilty to perjury means that you can never tell the truth," he continued. "Michael Cohen told the truth."

Cohen, who pleaded guilty in 2018 to lying to Congress about the Russia probe, addressed the passage on social media, writing on X, "Judge Engoron's determination regarding my veracity at the NYAG Trump civil fraud trial. Michael Cohen told the truth!"

Members of the Trump family and their attorneys roundly called the ruling unjust and indicated they plan to appeal.

Eric Trump told ABC News the judgment against him and his family is "a total joke" and "insane." He said the family will immediately appeal the ruling, which he said shows the court and the attorney general in his opinion are "living in an alternate universe."

Donald Trump Jr. accused the case of being politically motivated.

"We've reached the point where your political beliefs combined with what venue your case is heard are the primary determinants of the outcome; not the facts of the case!" he said in a statement to ABC News.

Donald Trump's lawyer, Chris Kise, also claimed the case was an "unjust political crusade" against the leading Republican presidential candidate and that there was no evidence of fraud.

"Hard to imagine a more unfair process and hard to believe this is happening in America," Kise said, adding that the former president "will of course appeal."

Donald Trump's legal spokesperson, Alina Habba, called the verdict a "manifest injustice" and the "culmination of a multi-year, politically fueled witch hunt."

"Countless hours of testimony proved that there was no wrongdoing, no crime, and no victim," Habba said in a statement. "Given the grave stakes, we trust that the Appellate Division will overturn this egregious verdict and end this relentless persecution against my clients."

The Trump Organization also said the ruling was a "gross miscarriage of justice."

"Every member of the New York business community, no matter the industry, should be gravely concerned with this gross overreach and brazen attempt by the Attorney General to exert limitless power where no private or public harm has been established," a spokesperson said in a statement. "If allowed to stand, this ruling will only further expedite the continuing exodus of companies from New York."

Judge Engoron took direct aim at several of the Trumps' core defenses, including Trump's claim that real estate appraisal is imprecise and subjective, and that property valuations reflect nuances in the market that only sophisticated practitioners can understand.

Engoron called that argument a "great red herring in this case."

"True enough, as appraising is an art as well as a science," Engoron wrote. "However, the science part cannot be fraudulent. When two appraisals rely on starkly different assumptions, that is not evidence of a difference of opinion, that is evidence of deceit."

Engoron also undercut a common refrain from defendants' that their accountants were responsible for maintaining above-board business practices.

In a section of his ruling titled, "Blame the Accountants," Engoron wrote that, "There is overwhelming evidence … that the buck for being truthful in the supporting data valuations stopped with the Trump Organization, not the accountants."

Former President Trump appears to be done watching his civil fraud trial, and he had a lot to say about it on his way out of the courthouse.

Speaking to reporters, Trump renewed his attacks on Judge Engoron and accused the "whole system" of being rigged against him while referencing the criminal charges he faces in Washington, D.C., and Fulton County, Georgia.

"Our whole system is corrupt. This is corrupt. Atlanta is corrupt, and what's coming out of DC is corrupt," Trump said.

Trump again claimed that his net worth is more than is represented in his financial documents, and said that his Mar-a-Lago estate is worth "50 to 100 times more" than what Engoron determined.

Trump also resumed attacks on the judge -- who he said is "run by the Democrats" -- and New York Attorney General Letitia James, who he alleged is communicating with the Department of Justice to "keep me nice and busy."

The former president said he's been "stuck" in court when he would rather be campaigning in early primary states.

Asked by ABC News why he attended the trial despite no obligation to do so, he claimed his attendance was necessary to expose corruption to the press.

"Why attend? Because they want to point it out to the press how corrupt it is, because nobody else seems to be able to do it," Trump said.

Trump departed the courthouse and is not expected to return to court for the afternoon session.