Credit unions continue to nibble at the edges of a mortgage business dominated by large banks and finely tuned mortgage banking operations, but credit unions’ share of the market climbed to a record 7.36 percent in 2011, according to a new analysis and ranking by Inside Mortgage Finance. While most of the industry has fled to the highest ground in underwriting standards, credit unions have been more flexible lenders willing to hold mortgages on their balance sheets and originate loans that don’t conform to the secondary market. “Credit unions sell about 45 percent of...(Includes two data charts)