Flagstar Bancorp Inc., the holding company for Flagstar Bank, today reported a 64% decrease in year-over-year net income in the first quarter while stating it was the result of a “transitionary period.” The Troy, Mich.-based bank, which provides home loans through a wholesale network of brokers and correspondents in all 50 states and 82 retail locations in 28 states, also reported it had responded to the difficult quarter by cutting costs, including reducing its mortgage staff by 20%.