The Greater Boise Auditorium District board has approved the purchase of the former Mardi Gras building on 9th and Lee.The approval secures the final piece of what its exploratory committee identified as necessary land for future development. Together, the three parcels give the district 6.46 acres of contiguous space in downtown Boise.The three parcels are: 11th & River: 4.13 acres / 180,000 square feet 9th & River: 1.84 acres / 80,542 square f…