1. A radiographic image capture device comprising: a radiation detector comprising a plurality of detection pixels configured to detect a radiation application state and a plurality of imaging pixels configured to 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, the application section comprising a switching section that selectively switches a feed-destination of the bias voltage generated by a power supply section between the plurality of detection pixels and the plurality of imaging pixels; and a controller that effects control such that, when a 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, wherein the first state is a state in which the bias voltage is applied to the detection pixels and the bias voltage is not applied to the imaging pixels, and the second state is a state in which the bias voltage applied to the detection pixels is reduced and the bias voltage is applied to the imaging pixels.