1. A radiographic image capture system comprising: a radiographic image capture section in which a plurality of radiographic imaging devices are placed adjacent to each other in a predetermined direction, with each of the radiographic imaging devices independently performing an imaging action in which the radiographic imaging device detects radiation that has been applied from a radiation source and has passed through a subject to acquire image data representing a radiographic image of the subject, a preparatory action that is performed before the imaging action, and a transition action in which the radiographic imaging device transitions, in response to a transition command, from a first state in which the radiographic imaging device performs the preparatory action to a second state in which the radiographic imaging device performs the imaging action; an output section that outputs the transition command to the plurality of radiographic imaging devices in a case in which imaging condition data has been input; a generation section that combines image data acquired by each of the radiographic imaging devices transitioned to the second state by the transition command, to generate elongated image data representing an elongated radiographic image; an acquisition section that acquires correction image data as a result of imaging being performed by the radiographic imaging devices in a state in which the radiation from the radiation source is not made incident thereon; and a correction section that corrects the image data or the elongated image data using the correction image data, wherein the correction image data is acquired each time before a plurality of sets of radiographic image data are acquired by the plurality of radiographic imaging devices, and the correction image data is used for offset correction.