Select Balance Sheet Information (Tables)

9 Months Ended

Sep. 30, 2023

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Schedule of Receivables

Receivables as of September 30, 2023 and December 31, 2022 are as follows:

(in thousands)	September 30, 2023		December 31, 2022
Receivables
Trade	$	171,745	$	112,126
Other	7,738		9,983
Unbilled Receivables	15,679		23,932
Total Receivables	195,162		146,041
Less: Allowance for Credit Losses	1,987		1,648
Receivables, net of allowance for credit losses	$	193,175	$	144,393

Schedule of Activity in Allowance for Credit Losses

The following is a summary of activity in the allowance for credit losses for the nine months ended September 30, 2023 and 2022:

(in thousands)	2023		2022
Beginning Balance, January 1	$	1,648	$	1,836
Additions Charged to Expense	1,176		518
Reductions for Amounts Written Off, Net of Recoveries	(837)		(806)
Ending Balance, September 30	$	1,987	$	1,548

Schedule of Inventories

Inventories consist of the following as of September 30, 2023 and December 31, 2022:

(in thousands)	September 30, 2023		December 31, 2022
Raw Material, Fuel and Supplies	$	72,657	$	70,374
Work in Process	30,267		31,766
Finished Goods	39,083		43,812
Total Inventories	$	142,007	$	145,952

Schedule of Investments

The following is a summary of our investments as of September 30, 2023 and December 31, 2022:

(in thousands)	September 30, 2023		December 31, 2022
Corporate-Owned Life Insurance Policies	$	39,794	$	38,991
Corporate and Government Debt Securities	8,986		8,761
Money Market Funds	3,223		1,560
Mutual Funds	7,289		5,503
Other Investments	30		30
Total Investments	$	59,322	$	54,845

Schedule of Property, Plant and Equipment

Major classes of property, plant and equipment as of September 30, 2023 and December 31, 2022 include:

(in thousands)	September 30, 2023		December 31, 2022
Electric Plant
Electric Plant in Service	$	3,009,031	$	2,844,379
Construction Work in Progress	129,810		113,932
Total Gross Electric Plant	3,138,841		2,958,311
Less Accumulated Depreciation and Amortization	889,136		859,988
Net Electric Plant	2,249,705		2,098,323
Nonelectric Property, Plant and Equipment
Nonelectric Property, Plant and Equipment in Service	303,641		293,928
Construction Work in Progress	39,885		15,170
Total Gross Nonelectric Property, Plant and Equipment	343,526		309,098
Less Accumulated Depreciation and Amortization	205,971		194,704
Net Nonelectric Property, Plant and Equipment	137,555		114,394
Net Property, Plant and Equipment	$	2,387,260	$	2,212,717