BOISE--IDACORP, Inc. (NYSE: IDA) reported first quarter 2013 net income attributable to IDACORP of $33.5 million, or $0.67 per diluted share, compared to $24.9 million, or $0.50 per diluted share, in the first quarter of 2012. Idaho Power Company, IDACORP's principal subsidiary, reported first quarter 2013 net income of $34.0 million compared to $25.8 million in the first quarter of 2012.