Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Operating Activities
Net Income	$ 20,367	$ 21,109
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	7,503	6,975
Depreciation and accretion included in other costs	1,646	1,689
Deferred income taxes, net	4,326	(496)
Realized (gain) loss on commodity contracts/sale of assets/investments	479	(840)
Unrealized loss on investments/commodity contracts	18	21
Employee benefits and compensation	380	300
Share-based compensation	649	537
Other, net	24	4
Changes in assets and liabilities:
Accounts receivable and accrued revenue	(3,738)	(8,014)
Propane inventory, storage gas and other inventory	3,073	5,337
Regulatory assets/liabilities, net	3,941	16,507
Prepaid expenses and other current assets	1,358	2,500
Accounts payable and other accrued liabilities	(1,604)	350
Income taxes receivable	8,841	21,753
Customer deposits and refunds	(134)	(2,890)
Accrued compensation	(5,943)	(5,262)
Other assets and liabilities, net	1,242	2,753
Net cash provided by operating activities	42,428	62,333
Investing Activities
Property, plant and equipment expenditures	(36,847)	(25,482)
Proceeds from sales of assets	51	198
Environmental expenditures	(99)	(49)
Net cash used in investing activities	(36,895)	(25,333)
Financing Activities
Common stock dividends	(4,204)	(3,763)
Issuance of stock for Dividend Reinvestment Plan	195	217
Change in cash overdrafts due to outstanding checks	(1,501)	(2,191)
Net borrowing (repayment) under line of credit agreements	839	(19,269)
Repayment of long-term debt and capital lease obligation	(402)	(398)
Net cash used in financing activities	(5,073)	(25,404)
Net Increase in Cash and Cash Equivalents	460	11,596
Cash and Cash Equivalents—Beginning of Period	2,855	4,574
Cash and Cash Equivalents—End of Period	$ 3,315	$ 16,170