A radiographic imaging system includes a radiation detector, a controller, and determining unit. The radiation detector detects radiation emitted from a radiation source. The controller is capable of selectively performing wired communication or wireless communication with the radiation detector and controls the radiation detector and the radiation source. The determining unit determines whether or not a delivered dose delivered to the radiation detector reaches a reference value, by using a predetermined determination criterion on the basis of the detection result from the radiation detector. The controller controls the radiation source on the basis of the determination result from the determining unit, and the determining unit switches the predetermined determination criterion in accordance with whether the selected communication is the wireless communication or the wired communication.