CenterState Banks, Inc. reported unaudited consolidated earnings results for the fourth quarter ended December 31, 2011. The company reported net interest income of $18,567, income before income tax of $21,381, net income available to common share holders of $14,082 or $0.47 per basic and diluted share against net interest income of $15,607, income before income tax of $258, net income available to common share holders of $436 or $0.01 per basic and diluted share a year ago. Return on average assets (annualized) was 2.49% against 0.08% a year ago. Return on average equity (annualized) was 21.57% against 0.68% a year ago.