IOWA CITY — MidWestOne Financial Group, corporate parent of MidWestOne Bank, posted third-quarter earnings that were essentially the same the third quarter of 2013.The Iowa City bank holding company reported third-quarter net income of $4.9 million for the third quarter, or 59 cents per share, compared with $4.9 million, or 57 cents per share, for the same period last year.Earnings were driven primarily by a 2.3 percent increase in net interest income, a 40 percent decrease in the provision for loan loss expense, and a 5.4 percent increase in noninterest income.“It was a solid quarter and we believe that we are on target for our fourth consecutive year of record earnings per share,” said Charles Funk, president and CEO.