Compher then gave Detroit a 3-2 lead at 11:43, shooting into an open net from the left post off a backdoor pass from Seider.
Horvat tied it 3-3 with a power-play goal at 15:49, scoring on a one-timer off a pass from Mathew Barzal.
“Message was still the same,” Walman said. “We never got down on each other, and we just knew we were playing a good game and eventually it would go in.
“So that's what we did. We kept hounding at it and it worked out.”
Casey Cizikas gave the Islanders a 1-0 lead at 18:39 of the second period with a short-handed goal. He skated around Seider down the left wing before sneaking a backhand five-hole on Husso.
Brock Nelson pushed it to 2-0 at 1:05 of the third period with a deflection of Dobson's one-timer from the right point.
“We can't give up three unanswered there in the third,” Dobson said. “We battled hard at the end there on the power play to get a point at least, but not good enough in the third, that’s for sure.”