SIOUX FALLS, S.D. (AP) — SIOUX FALLS, S.D. (AP) — NorthWestern Corp. (NWE) on Wednesday reported profit of $25 million…SIOUX FALLS, S.D. (AP) — SIOUX FALLS, S.D. (AP) — NorthWestern Corp. (NWE) on Wednesday reported profit of $25 million in its second quarter.