(CNN) Robin Thicke broke his silence early Wednesday morning on the sudden death of his father, Alan Thicke. "My Father passed away today," Thicke wrote on Instagram. "He was the best man I ever knew. The best friend I ever had. We love you Alan Thicke. Love, your grateful son." "Today I lost my best friend and my idol, and the world lost one of its finest," he wrote alongside a picture with his dad.