Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023
Operating Activities
Net Income	$ 64,439	$ 52,477
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	34,787	34,486
Depreciation and accretion included in other costs	8,196	5,714
Deferred income taxes	23,810	5,695
Realized loss on commodity contracts and sale of assets	(3,056)	(1,032)
Unrealized gain on investments and commodity contracts	(1,006)	(1,131)
Employee benefits and compensation	(48)	218
Share-based compensation	4,512	2,919
Changes in assets and liabilities:
Accounts receivable and accrued revenue	30,070	30,812
Propane inventory, storage gas and other inventory	4,894	5,052
Regulatory assets and liabilities, net	12,221	28,796
Prepaid expenses and other current assets	4,319	2,953
Accounts payable and other accrued liabilities	(4,624)	(18,273)
Income taxes receivable/payable	(6,036)	1,265
Customer deposits and refunds	(1,652)	1,316
Accrued compensation	(4,192)	(5,061)
Other assets and liabilities, net	4,341	2,697
Net cash provided by operating activities	167,378	148,983
Investing Activities
Property, plant and equipment expenditures	(157,960)	(90,265)
Proceeds from sale of assets	1,767	2,034
Environmental expenditures	205	760
Net cash used in investing activities	(155,795)	(88,991)
Financing Activities
Common stock dividends	(25,827)	(19,009)
Issuance of stock under the Dividend Reinvestment Plan, net of offering fees	2,471	(14)
Tax withholding payments related to net settled stock compensation	(1,466)	(2,455)
Change in cash overdrafts due to outstanding checks	235	(2,157)
Net borrowings (repayments) under line of credit agreements	27,003	(104,194)
Proceeds from long-term debt, net of offering fees	0	79,840
Repayment of long-term debt	(12,473)	(14,038)
Net cash used in financing activities	(10,057)	(62,027)
Net Increase (Decrease) in Cash and Cash Equivalents	1,526	(2,035)
Cash and Cash Equivalents—Beginning of Period	4,904	6,204
Cash and Cash Equivalents—End of Period	6,430	4,169
Payments to Acquire Businesses, Gross	603	0
Accrued compensation	(4,192)	(5,061)
Net Income	64,439	52,477
Depreciation and amortization	34,787	34,486
Depreciation and accretion included in other costs	8,196	5,714
Deferred Income Tax Expense (Benefit)	23,810	5,695
Gain (Loss) on Disposition of Property Plant Equipment, Excluding Oil and Gas Property and Timber Property	3,056	1,032
Unrealized Gain (Loss) on Commodity Contracts	1,006	1,131
Employee benefits and compensation	(48)	218
Share-based compensation	4,512	2,919
Other Noncash Expense	(229)	0
Increase (Decrease) in Accounts Receivable	(30,070)	(30,812)
Increase (Decrease) in Inventories	(4,894)	(5,052)
Increase (Decrease) in Regulatory Assets and Liabilities	(12,221)	(28,796)
Increase (Decrease) in Prepaid Expense and Other Assets	(4,319)	(2,953)
Accounts payable and other accrued liabilities	(4,624)	(18,273)
Increase (Decrease) in Income Taxes Receivable	6,036	(1,265)
Customer deposits and refunds	(1,652)	1,316
Increase (Decrease) in Interest Payable, Net	(3,368)	80
Increase (Decrease) in Other Operating Assets and Liabilities, Net	(4,341)	(2,697)
Net Cash Provided by (Used in) Operating Activities	167,378	148,983
Payments to Acquire Property, Plant, and Equipment	157,960	90,265
Proceeds from sale of assets	1,767	2,034
Environmental expenditures	205	760
Net cash used in investing activities	(155,795)	(88,991)
Payments of Ordinary Dividends, Common Stock	25,827	19,009
Issuance of stock under the Dividend Reinvestment Plan, net of offering fees	2,471	(14)
Payment, Tax Withholding, Share-based Payment Arrangement	1,466	2,455
Change in cash overdrafts due to outstanding checks	235	(2,157)
Net borrowings (repayments) under line of credit agreements	27,003	(104,194)
Proceeds from long-term debt, net of offering fees	0	(79,840)
Repayments of Long-term Debt	12,473	14,038
Net cash used in financing activities	(10,057)	(62,027)
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, Period Increase (Decrease), Including Exchange Rate Effect	1,526	(2,035)
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents	$ 6,430	$ 4,169