Every time a vacancy develops in the Mountain West Plaza office center at the corner of Ironwood and Government Way in Coeur d'Alene, the property manager notifies Mountain West Bank President Jon Hippler. Hippler is almost always in need of a little more space. His 12-year-old institution has become the largest state-chartered bank in Idaho, with assets of $700 million. From a single branch in a manufactured building, Mountain West has expanded to 17, with four more planned by the end of 2006. The growth has taken the bank into wealthy enclaves like Park City, Utah, business centers like Boise, and hamlets like Ione, Wash. Mountain West just completed the purchase of a former Zions First National Bank office in Bonners Ferry, where a struggling economy would not appear to offer much to a bank on the make.