SEATTLE — Seattle-based Washington Federal is acquiring 51 Bank of America branches in eastern Washington, Oregon, Idaho and New Mexico. The company announced the move Friday with its earnings report and also said it has completed its conversion to a national bank charter. The acquisitions will give Washington Federal a total of 236 branches. The additions: Washington: Clarkston, Cle Elum, Chelan, Chewelah, Colfax, Colville, Dayton, Deer Park, Leavenworth, Moses Lake, Newport, Odessa, Omak, Pullman, Quincy, Republic, Walla Walla and two in Wenatchee. Idaho: Four in Boise, Gooding, Hailey, Idaho Falls, Ketchum, Nampa, Osburn, Payette, Pocatello, Salmon, Sandpoint and Twin Falls. Oregon: Hermiston, Hood River, La Grande, Milton-Freewater, Ontario and The Dalles. New Mexico: Angel Fire, Chama, two in Clovis, Espanola, Hobbs, Raton, Roswell, two in Silver City, and Socorro.