X0306 4 2020-12-28 false 0001005409 DIME COMMUNITY BANCSHARES INC DCOM 0001237108 MAHON KENNETH J 300 CADMAN PLAZA WEST, 8TH FLOOR BROOKLYN NY 11201 true true false false CHIEF EXECUTIVE OFFICER Common Stock 2020-12-28 4 A false 15484.00 A 173182.00 D Common Stock 2020-12-28 4 F false 7583.00 D 165599.00 D Common Stock 2020-12-28 4 A false 16010.00 A 181609.00 D Common Stock 2020-12-28 4 F false 7841.00 D 173768.00 D Common Stock 2020-12-28 4 A false 18306.00 A 192074.00 D Common Stock 2020-12-28 4 F false 7992.00 D 184082.00 D Common Stock 2020-12-28 4 J false 3394.00 A 187476.00 D Common Stock 2020-12-28 4 F false 1663.00 D 185813.00 D Common Stock 2020-12-28 4 J false 5013.00 A 190826.00 D Common Stock 2020-12-28 4 F false 2455.00 D 188371.00 D Common Stock 2020-12-28 4 J false 7370.00 A 195741.00 D Common Stock 2020-12-28 4 F false 3610.00 D 192131.00 D Common Stock 2020-12-28 4 J false 18306.00 A 210437.00 D Common Stock 2020-12-28 4 F false 6219.00 D 204218.00 D Common Stock 2020-12-28 4 J false 3394.00 D 30689.00 I Restricted Stock Awards Common Stock 2020-12-28 4 J false 5013.00 D 25676.00 I Restricted Stock Awards Common Stock 2020-12-28 4 J false 7370.00 D 18306.00 I Restricted Stock Awards Common Stock 2020-12-28 4 J false 18306.00 D 0.00 I Restricted Stock Awards Common Stock 134756.00 I BMP Common Stock 244909.00 I KSOP Preferred Stock, Series A 10000.00 D Allocation of earned performance shares in the Company's Long-term Incentive Plan. Shares withheld by the Company to satisfy taxes. Vesting of restricted stock on December 28, 2020 Leslie Veluswamy, as attorney in fact for MAHON KENNETH J 2020-12-30