X0306 4 2019-05-02 false 0000752714 MCGRATH RENTCORP MGRC 0001357113 Whitney David M 5700 LAS POSITAS ROAD LIVERMORE CA 94551 false true false false VP, Controller, PAO Common Stock 2019-05-02 4 M false 400 34.57 A 9346 D Common Stock 2019-05-02 4 M false 1005 24.6 A 10351 D Common Stock 2019-05-02 4 M false 335 31.99 A 10686 D Common Stock 2019-05-02 4 M false 245 32.64 A 10931 D Common Stock 2019-05-02 4 M false 835 34.57 A 14966 I Spouse's Holding Common Stock 2019-05-02 4 M false 1905 24.6 A 16871 I Spouse's Holding Common Stock 2019-05-02 4 M false 630 31.99 A 17501 I Spouse's Holding Common Stock 2019-05-02 4 M false 465 32.64 A 17966 I Spouse's Holding Common Stock 2019-05-02 4 F false 541 63.8 D 10390 D Common Stock 2019-05-02 4 D false 899 63.8 D 9491 D Common Stock 2019-05-02 4 F false 1040 63.8 D 16926 I Spouse's Holding Common Stock 2019-05-02 4 D false 1742 63.8 D 15184 I Spouse's Holding Stock Appreciation Right 34.57 2019-05-02 4 M false 400 0 D 2018-03-02 2024-03-02 Common Stock 400 4800 D Stock Appreciation Right 24.6 2019-05-02 4 M false 1005 0 D 2017-03-01 2023-03-01 Common Stock 1005 8040 D Stock Appreciation Right 31.99 2019-05-02 4 M false 335 0 D 2016-03-02 2022-03-02 Common Stock 335 1340 D Stock Appreciation Right 32.64 2019-05-02 4 M false 245 0 D 2015-03-03 2021-03-03 Common Stock 245 0 D Stock Appreciation Right 34.57 2019-05-02 4 M false 835 0 D 2018-03-02 2024-03-02 Common Stock 835 10020 I Spouse's Holding Stock Appreciation Right 24.6 2019-05-02 4 M false 1905 0 D 2017-03-01 2023-03-01 Common Stock 1905 15240 I Spouse's Holding Stock Appreciation Right 31.99 2019-05-02 4 M false 630 0 D 2016-03-02 2022-03-02 Common Stock 630 2520 I Spouse's Holding Stock Appreciation Right 32.64 2019-05-02 4 M false 465 0 D 2015-03-03 2021-03-03 Common Stock 465 0 I Spouse's Holding Kay Dashner, POA for David Whitney 2019-05-06