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Other Comprehensive Income (Tables)

12 Months Ended

Dec. 31, 2022

Statement of Comprehensive Income [Abstract]

Reclassification out of Accumulated Other Comprehensive Income

The following table details reclassifications out of AOCI and into Net income. The amounts in parentheses below indicate decreases to Net income in the Consolidated Statements of Income for the period, net of tax (in thousands):


		Location on the Consolidated		Amount Reclassified from AOCI
		Statements of Income		December 31, 2022				December 31, 2021
Gains and (losses) on cash flow hedges:
Interest rate swaps		Interest expense		$	(2,850	)		$	(2,851	)
Commodity contracts		Fuel, purchased power and cost of natural gas sold			2,708				2,051
					(142	)			(800	)
Income tax		Income tax benefit (expense)			58				175
Total reclassification adjustments related to cash flow hedges, net of tax				$	(84	)		$	(625	)

Amortization of components of defined benefit plans:
Prior service cost		Operations and maintenance		$	93			$	98

Actuarial gain (loss)		Operations and maintenance			(751	)			(2,391	)
					(658	)			(2,293	)
Income tax		Income tax benefit (expense)			198				638
Total reclassification adjustments related to defined benefit plans, net of tax				$	(460	)		$	(1,655	)

Total reclassifications				$	(544	)		$	(2,280	)

Schedule of Accumulated Other Comprehensive Income (Loss)

Balances by classification included within AOCI, net of tax on the accompanying Consolidated Balance Sheets were as follows (in thousands):


		Derivatives Designated as Cash Flow Hedges
		Interest Rate Swaps				Commodity Derivatives				Employee Benefit Plans				Total
As of December 31, 2021		$	(10,384	)		$	1,476			$	(11,176	)		$	(20,084	)
Other comprehensive income (loss)
before reclassifications			—				(631	)			4,604				3,973
Amounts reclassified from AOCI			2,129				(2,045	)			460				544
As of December 31, 2022		$	(8,255	)		$	(1,200	)		$	(6,112	)		$	(15,567	)

		Derivatives Designated as Cash Flow Hedges
		Interest Rate Swaps				Commodity Derivatives				Employee Benefit Plans				Total
As of December 31, 2020		$	(12,558	)		$	2			$	(14,790	)		$	(27,346	)
Other comprehensive income (loss)
before reclassifications			—				3,023				1,959				4,982
Amounts reclassified from AOCI			2,174				(1,549	)			1,655				2,280
As of December 31, 2021		$	(10,384	)		$	1,476			$	(11,176	)		$	(20,084	)