A mutual bank may at a time by resolution of its board of trustees require that up to 90 days' advance notice be given to it by each depositor before the withdrawal of any deposit or portion thereof. If the board of trustees adopts a resolution, a deposit does not need to be paid until the expiration of the notice period specified in the resolution. A mutual bank shall notify the department in writing on the day of the adoption of the resolution. Notwithstanding adoption of the resolution, a mutual bank may permit withdrawal of all or a part of any deposit prior to the expiration of the notice period prescribed by the resolution. The resolution may be rescinded at any time.