BOISE--IDACORP, Inc. (NYSE: IDA) reported first quarter 2015 net income attributable to IDACORP of $23.4 million, or $0.47 per diluted share, compared with $27.4 million, or $0.55 per diluted share, in 2014. Idaho Power Company, IDACORP's principal operating subsidiary, reported first quarter 2015 net income of $23.5 million compared with $27.9 million in 2014.