Mumbai: State-run IDBI Bank today said R M Malla has been appointed as the Chairman and Managing Director of the bank for a period of three years. The Ministry of Finance, as per its letter dated July 7, has appointed Malla to the post of CMD, IDBI Bank said in a filing to the Bombay Stock Exchange. Malla has been appointed for a period up to May 31, 2013, when he would attain the age of superannuation, or until further orders, whichever is earlier, it added.