What does 1 Samuel 4:18 mean?

As soon as the man mentioned the Ark, Eli fell backward off his seat by the gate, broke his neck, and died. He was old and heavy. He had led Israel for forty years. 1 Samuel 4:18 - Modern Text Bible

(The shock of losing the Ark is too much for Eli. He falls, dies, and his long leadership ends abruptly.)