Commercial banks and savings institutions generated $3.37 billion in mortgage banking income during the first quarter of 2014, according to a new Inside Mortgage Trends analysis of call reports. First-quarter bank and thrift mortgage banking profits were down 36.2 percent from the fourth quarter of last year and 56.2 percent off the robust $7.70 billion the industry earned in the first three months of 2013. The first quarter of 2014 marked the lowest ... [Includes one data chart]