IDBI Bank has reported a 57% increase in net profit to Rs 1,458 crore for the third quarter, with net interest income rising 17% to Rs 3,435 crore. The bank's net advances grew by 18% to Rs 1.75 lakh crore, aided by growth in the retail segment. Gross net performing assets were down to 4.69%, while provision coverage ratio improved to 99.17%.