Orlando Parker and Latif Rivers added 10 points apiece for the Seahawks (19-4, 10-2 Northeast Conference), who have won four in a row and 12 of their past 13. Thompson also grabbed 10 rebounds for Wagner and Mario Moody had four of the Seahawks' eight blocks.
Wagner outrebounded the Red Flash 50-32 and scored 22 second-chance points off 18 offensive rebounds.
The Seahawks led 39-24 at halftime and remained comfortably ahead over the final 20 minutes. A layup and free throw by Thompson gave Wagner its biggest lead off the game at 65-42 with 5:13 remaining.