An Anchorage man who admitted to killing his wife and stealing hundreds of thousands of dollars from a mentally disabled man was sentenced to serve 23 years in prison Friday.

William "Mike" Dixiano, 63, pleaded guilty this summer to second-degree murder and first-degree theft. Dixiano told an Anchorage detective in May he beat his wife, Angela Dixiano, to death with a baseball bat in 2010 and dumped her body near Long Lake in the Matanuska Valley north of Anchorage.

He also admitted to stealing money and a house from a man named Sam Lee, who, because of his mental disability, had a trust fund set up by his East Coast physicist parents to take care of him, according to charging documents.

Superior Court Judge Michael Spaan said Friday he "didn't like it at all" that prosecutors made a deal with Dixiano to put him behind bars for only 20 years for the murder and three for the theft.

"Both crimes are so bad, it does give me pause about taking this deal," Spaan said. "(But) life is uncertain, and I know finality is important."

Acting on those mixed feelings, the judge did something not included in the plea agreement: He eliminated the possibility of discretionary parole for Dixiano.

According to Dixiano's court-appointed lawyer, Marcelle McDannel, mandatory parole for good behavior meant her client would likely be released from prison around the age of 76 -- if he survived that long, she said.