The GeGI detector is a pixelated planar germanium detector nominally 90 mm diameter x 11 mm thick. The detector is operated at ~ 85 K using a long-lived maintenance-free Stirling-cycle mechanical cooler, eliminating the need for liquid nitrogen. The excellent energy resolution provides laboratory-level gamma-ray spectroscopy up to 3 MeV. More importantly, the detector pixilation provides the x-y-z location of each gamma-ray interaction in the detector, allowing the standard GeGI configuration to perform 4p Compton imaging or 60-degree pinhole-aperture planar imaging out of the box. The Compton imaging modality is ideal for locating the highest-intensity gamma-ray source in the 4p field of view very quickly while the pinhole modality provides detailed near-field images of complex objects (drums, warheads, containers) when longer dwell times are available. Combine this data with a wide-angle optical image, and the precise location and identity of a radioisotope is known.