Selected Balance Sheet Information:

3 Months Ended

Mar. 31, 2022

Selected Balance Sheet Information [Abstract]

Accounts Receivable and Allowance for Credit Losses

Following is a summary of Accounts receivable, net included in the accompanying Condensed Consolidated Balance Sheets (in thousands) as of:


	March 31, 2022		December 31, 2021
Billed Accounts Receivable	$	257,982	$	181,027
Unbilled Revenue	130,294		142,738
Less: Allowance for Credit Losses	(4,486)		(2,113)
Accounts Receivable, net	$	383,790	$	321,652

Changes to allowance for credit losses for the three months ended March 31, 2022 and 2021, respectively, were as follows (in thousands):


	Balance at Beginning of Year		Additions Charged to Costs and Expenses		Recoveries and Other Additions		Write-offs and Other Deductions		Balance at March 31,
2022	$	2,113	$	3,416	$	655	$	(1,698)	$	4,486
2021	$	7,003	$	1,877	$	1,014	$	(1,643)	$	8,251

Materials, Supplies and Fuel

The following amounts by major classification are included in Materials, supplies and fuel on the accompanying Condensed Consolidated Balance Sheets (in thousands) as of:


	March 31, 2022		December 31, 2021
Materials and supplies	$	92,224	$	86,400
Fuel - Electric Utilities	1,459		1,267
Natural gas in storage	14,549		63,312
Total materials, supplies and fuel	$	108,232	$	150,979

Accrued Liabilities

The following amounts by major classification are included in Accrued liabilities on the accompanying Condensed Consolidated Balance Sheets (in thousands) as of:


	March 31, 2022		December 31, 2021
Accrued employee compensation, benefits and withholdings	$	51,032	$	74,387
Accrued property taxes	53,389		50,874
Customer deposits and prepayments	39,543		48,814
Accrued interest	46,396		33,680
Other (none of which is individually significant)	36,849		37,004
Total accrued liabilities	$	227,209	$	244,759