Seattle's Regal Financial Bank and Northwest Bank have merged. Regal Financial struggled during the economic downturn, but its cease-and-desist order from the Federal Deposit Insurance Corp. and the Washington Department of Financial Institutions was terminated 18 months ago after the bank raised $12 million from investors. The bank was one of the most troubled in the state during the height of the financial crisis because of bad loans and its lack of oversight with third parties. Boise-based…