Mortgage banking operations owned by banks and thrifts – and that’s most of them – posted their most profitable year ever in 2012, but the tide clearly appeared to be turning in the fourth quarter. A new Inside Mortgage Trends analysis of call report data shows that banks reported a whopping $31.925 billion in non-interest income from their mortgage banking operations. That was more than six times the $5.240 billion they earned back in 2011, a year when industry-wide results were ... [Includes one data chart]