1. A radiographic image capture device comprising: a radiation detector comprising a plurality of detection pixels that detect a radiation application state and a plurality of imaging pixels that capture a radiographic image; an application section that applies a bias voltage to each of the plurality of detection pixels and to each of the plurality of imaging pixels; and a controller that effects control such that, if the radiation application amount detected by the detection pixels is equal to or greater than a first threshold value during a first state in which the bias voltage is applied to the plurality of detection pixels, the application section is caused to transition to a second state in which the bias voltage applied to the detection pixels is reduced.