Condensed Consolidated Balance Sheets (Unaudited) - USD ($) $ in Thousands	Mar. 31, 2023		Dec. 31, 2022	Mar. 31, 2022
Property, Plant and Equipment
Regulated Energy	$ 1,835,261		$ 1,802,999
Unregulated Energy	395,052		393,215
Other businesses and eliminations	29,695		29,890
Total property, plant and equipment	2,260,008		2,226,104
Less: Accumulated depreciation and amortization	(476,407)		(462,926)
Property, Plant and Equipment, Net	1,836,695		1,810,473
Current Assets
Cash and cash equivalents	3,065		6,204
Trade and other receivables	62,310		62,881
Accounts Receivable, Allowance for Credit Loss, Current	(2,820)		(2,877)
Accounts Receivable, before Allowance for Credit Loss, Current	65,130		65,758
Accrued revenue	24,135		29,206
Propane inventory, at average cost	8,505		9,365
Other inventory, at average cost	17,520		16,896
Regulatory assets	27,874		41,439
Storage gas prepayments	1,228		6,364
Income taxes receivable			2,541
Prepaid expenses	12,990		15,865
Derivative assets, at fair value	1,248		2,787
Other current assets	629		428
Total current assets	159,504		193,976
Deferred Charges and Other Assets
Goodwill	46,213		46,213
Other intangible assets, net	17,412		17,859
Investments, at fair value	10,866		10,576
Operating Lease, Right-of-Use Asset	14,272		14,421
Regulatory assets	99,379		108,214
Receivables and other deferred charges	12,312		12,323
Total deferred charges and other assets	201,352		210,588
Total Assets	2,197,551		2,215,037
Stockholders’ equity
Preferred stock, par value $0.01 per share (authorized 2,000,000 shares), no shares issued and outstanding	0		0
Common stock, par value $0.4867 per share (authorized 50,000,000 shares)	8,659		8,635
Additional paid-in capital	379,703		380,036
Retained earnings	472,209		445,509
Accumulated other comprehensive income (loss)	(1,983)		(1,379)	$ 1,850
Deferred compensation obligation	8,816		7,060
Treasury stock	(8,816)		(7,060)
Total stockholders’ equity	858,588	[1]	832,801	805,512	[1]
Total capitalization	1,514,872		1,411,189
Current Liabilities
Less: current maturities	21,489		21,483
Short-term borrowing	94,079		202,157
Accounts payable	38,193		61,496
Customer deposits and refunds	36,676		37,152
Accrued interest	4,849		3,349
Dividends payable	9,518		9,492
Accrued compensation	6,350		14,660
Regulatory liabilities	10,556		5,031
Derivative liabilities, at fair value	798		585
Other accrued liabilities	16,717		13,618
Total current liabilities	246,779		369,023
Deferred Credits and Other Liabilities
Deferred income taxes	258,399		256,167
Regulatory liabilities	143,642		142,989
Environmental liabilities	2,530		3,272
Other pension and benefit costs	17,190		16,965
Operating Lease, Liability, Noncurrent	12,110		12,392
Deferred investment tax credits and other liabilities	1,393		1,410
Total deferred credits and other liabilities	435,900		434,825
Environmental and other commitments and contingencies (Notes 5 and 6)
Total Capitalization and Liabilities	2,197,551		2,215,037
Other businesses and eliminations	29,695		29,890
Property, Plant and Equipment, Gross	2,260,008		2,226,104
Construction Work in Progress	53,094		47,295
Property, Plant and Equipment, Net	1,836,695		1,810,473
Trade and other receivables	62,310		62,881
Income taxes receivable			2,541
Other current assets	629		428
Assets, Current	159,504		193,976
Receivables and other deferred charges	12,312		12,323
Deferred Charges And Other Assets	201,352		210,588
Total identifiable assets	2,197,551		2,215,037
Regulated Energy	1,835,261		1,802,999
Unregulated Energy	395,052		393,215
Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment	476,407		462,926
Cash and cash equivalents	3,065		6,204
Accounts Receivable, before Allowance for Credit Loss, Current	65,130		65,758
Allowance for uncollectible accounts	2,820		2,877
Accrued revenue	24,135		29,206
Propane inventory, at average cost	8,505		9,365
Other inventory, at average cost	17,520		16,896
Regulatory assets	27,874		41,439
Storage gas prepayments	1,228		6,364
Income Taxes Receivable	0
Prepaid expenses	12,990		15,865
Derivative assets, at fair value	1,248		2,787
Goodwill	46,213		46,213
Other intangible assets, net	17,412		17,859
Investments, at fair value	10,866		10,576
Operating Lease, Right-of-Use Asset	14,272		14,421
Regulatory assets	99,379		108,214
Preferred stock, par value $0.01 per share (authorized 2,000,000 shares), no shares issued and outstanding	0		0
Stockholders' Equity Attributable to Parent	858,588	[1]	832,801	805,512	[1]
Capitalization, Long-term Debt and Equity	1,514,872		1,411,189
Accounts payable	38,193		61,496
Other accrued liabilities	16,717		13,618
Liabilities, Current	246,779		369,023
Regulatory liabilities	143,642		142,989
Operating Lease, Liability, Noncurrent	12,110		12,392
Deferred investment tax credits and other liabilities	1,393		1,410
Deferred Credits and Other Liabilities	435,900		434,825
Environmental and other commitments and contingencies (Notes 5 and 6)
Liabilities and Equity	2,197,551		2,215,037
Common stock, par value $0.4867 per share (authorized 50,000,000 shares)	8,659		8,635
Additional paid-in capital	379,703		380,036
Retained earnings	472,209		445,509
Accumulated other comprehensive income (loss)	(1,983)		(1,379)	1,850
Deferred compensation obligation	8,816		7,060
Treasury Stock, Value	8,816		7,060
Long-term Debt and Capital Lease Obligations, Net of Current Maturities	656,284		578,388
Less: current maturities	21,489		21,483
Short-term borrowing	94,079		202,157
Customer deposits and refunds	36,676		37,152
Accrued interest	4,849		3,349
Dividends payable	9,518		9,492
Accrued compensation	6,350		14,660
Regulatory liabilities	10,556		5,031
Taxes Payable, Current	7,554			$ 0
Energy Marketing Contract Liabilities, Current	798		585
Deferred income taxes	258,399		256,167
Environmental liabilities	2,530		3,272
Other pension and benefit costs	17,190		16,965
Energy Marketing Contracts Assets, Noncurrent	898		982
Energy Marketing Contract Liabilities, Noncurrent	$ 636		$ 1,630

[1] 2,000,000 shares of preferred stock at $0.01 par value have been authorized. No shares have been issued or are outstanding; accordingly, no information has been included in the statements of stockholders’ equity.