Committed Lines of Credit (Tables)

12 Months Ended

Dec. 31, 2020

Avista Utilities [Member]

Line of Credit Facility [Line Items]

Schedule of Balances Outstanding and Interest Rates of Borrowings

Balances outstanding and interest rates of borrowings (excluding letters of credit) under the Company’s revolving committed lines of credit were as follows as of December 31 (dollars in thousands):

	2020			2019
Balance outstanding at end of period	$	102,000		$	182,300
Letters of credit outstanding at end of period	$	27,618		$	21,473
Average interest rate at end of period		1.22	%		2.64	%

Alaska Electric Light & Power [Member]

Line of Credit Facility [Line Items]

Schedule of Balances Outstanding and Interest Rates of Borrowings

Balances outstanding and interest rates of borrowings under AEL&P's revolving committed lines of credit were as follows as of December 31 (dollars in thousands):

	2020			2019
Balance outstanding at end of period	$	1,000		$	3,500
Average interest rate at end of period		1.65	%		3.45	%