Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Operating Activities
Net Income	$ 36,344	$ 36,933
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	17,183	16,977
Depreciation and accretion included in other costs	2,834	2,744
Deferred income taxes	2,453	7,398
Realized gain on commodity contracts and sale of assets	(284)	(4,274)
Unrealized loss (gain) on investments/commodity contracts	(551)	541
Employee benefits and compensation	119	(260)
Share-based compensation	2,408	2,213
Changes in assets and liabilities:
Accounts receivable and accrued revenue	5,641	7,532
Propane inventory, storage gas and other inventory	5,373	4,031
Regulatory assets/liabilities, net	24,607	5,774
Prepaid expenses and other current assets	3,985	6,626
Accounts payable and other accrued liabilities	(21,166)	(12,918)
Income taxes receivable/payable	10,095	6,134
Customer deposits and refunds	(476)	(3,114)
Accrued compensation	(8,436)	(6,392)
Other assets and liabilities, net	1,538	(825)
Net cash provided by operating activities	81,667	69,120
Investing Activities
Property, plant and equipment expenditures	(42,418)	(29,887)
Proceeds from sale of assets	506	219
Environmental expenditures	742	267
Net cash used in investing activities	(42,654)	(29,935)
Financing Activities
Common stock dividends	(9,492)	(8,274)
Issuance of stock under the Dividend Reinvestment Plan, net of offering fees	0	3,242
Tax withholding payments related to net settled stock compensation	(2,455)	(2,838)
Change in cash overdrafts due to outstanding checks	(323)	1,223
Net repayments under line of credit agreements	(107,755)	(82,008)
Proceeds from long-term debt, net of offering fees	79,840	49,915
Repayment of long-term debt	(1,967)	(213)
Net cash used in financing activities	(42,152)	(38,953)
Net Increase (Decrease) in Cash and Cash Equivalents	(3,139)	232
Cash and Cash Equivalents—Beginning of Period	6,204	4,976
Cash and Cash Equivalents—End of Period	$ 3,065	$ 5,208