Condensed Consolidated Balance Sheets (Parenthetical) (Parentheticals) - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
Accounts Receivable, Allowance for Credit Loss, Current	$ 4,094	$ 4,766
Allowance for Doubtful Other Receivables, Current	$ 642	$ 497
Common Stock, No Par Value	$ 0	$ 0
Common Stock, Shares Authorized	120,000,000	120,000,000
Common Stock, Shares, Issued	50,516,479	50,462,000
Treasury Stock, Shares	0	0
Idaho Power Company [Member]
Accounts Receivable, Allowance for Credit Loss, Current	$ 4,094	$ 4,766
Allowance for Doubtful Other Receivables, Current	$ 642	$ 497
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	39,151,000	39,151,000