Condensed Consolidated Balance Sheets (Parenthetical) (Parentheticals) - USD ($) $ in Thousands	Sep. 30, 2015	Dec. 31, 2014
Allowance for Doubtful Accounts Receivable, Current	$ 1,079	$ 1,960
Allowance for Doubtful Other Receivables, Current	220	144
Allowance for Doubtful Accounts Receivable, Noncurrent	$ 552	$ 552
Common Stock, No Par Value
Common Stock, Shares Authorized	120,000,000	120,000,000
Common Stock, Shares, Issued	50,352,051	50,308,702
Treasury Stock, Shares	11,363	38,764
Idaho Power Company
Allowance for Doubtful Accounts Receivable, Current	$ 1,079	$ 1,960
Allowance for Doubtful Other Receivables, Current	$ 220	$ 144
Common Stock, Par or Stated Value Per Share	$ 2.50	$ 2.50
Common Stock, Shares Authorized	50,000,000	50,000,000
Common Stock, Shares, Issued	39,150,812	39,150,812