Who pays if a tenant shatters slider with weed eater?

[Ted Tucker]

I received a text from one of my tenants who has been in the property for 5+ years. He said, "I launched a rock into the sliding glass door with a weed eater and it shattered the outer pane". He asked if he pays for this out of his pocket or is some of this covered under the insurance. 

Should his renter's insurance pay for this?

Should we pay for this?

Should we split the cost?

He has been a great tenant and very rarely calls for anything, so I want to do the right thing, just don't know what that is...

Please let me know if anyone has had this type of situation and let me know how you handled it.