Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Operating Activities
Net Income	$ 19,144	$ 20,367
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	8,812	7,503
Depreciation and accretion included in other costs	1,939	1,646
Deferred income taxes	7,849	4,326
Realized loss on commodity contracts/sale of assets/investments	1,330	479
Unrealized loss on investments/commodity contracts	132	18
Employee benefits and compensation	423	380
Share-based compensation	639	649
Other, net	(4)	24
Changes in assets and liabilities:
Accounts receivable and accrued revenue	5,095	(3,738)
Propane inventory, storage gas and other inventory	6,688	3,073
Regulatory assets/liabilities, net	6,103	3,941
Prepaid expenses and other current assets	1,136	1,358
Accounts payable and other accrued liabilities	(5,897)	102
Income taxes receivable	9,500	8,841
Customer deposits and refunds	400	(134)
Accrued compensation	(4,966)	(5,943)
Other assets and liabilities, net	1,631	1,242
Net cash provided by operating activities	59,954	44,134
Investing Activities
Property, plant and equipment expenditures	(42,172)	(37,783)
Proceeds from sales of assets	36	51
Environmental expenditures	(57)	(99)
Net cash used in investing activities	(42,193)	(37,831)
Financing Activities
Common stock dividends	(4,815)	(4,204)
Issuance of stock for Dividend Reinvestment Plan	222	195
Payments Related to Tax Withholding for Share-based Compensation	(692)	(770)
Change in cash overdrafts due to outstanding checks	587	(1,501)
Net (repayment) borrowing under line of credit agreements	(11,125)	839
Repayment of long-term debt and capital lease obligation	(416)	(402)
Net cash used by financing activities	(16,239)	(5,843)
Net Increase in Cash and Cash Equivalents	1,522	460
Cash and Cash Equivalents—Beginning of Period	4,178	2,855
Cash and Cash Equivalents—End of Period	$ 5,700	$ 3,315