Condensed Consolidated Statements of Cash Flows (USD $) In Thousands, unless otherwise specified	6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012
Operating Activities
Net Income	$ 19,225	$ 15,787
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	11,797	11,646
Depreciation and accretion included in other costs	3,030	2,686
Deferred income taxes, net	5,796	8,562
(Gain) loss on sale of assets	(39)	33
Unrealized (gain) loss on commodity contracts	(153)	232
Unrealized gain on investments	(42)	(502)
Realized gain on sales of investments, net	(310)	0
Employee benefits	458	1,541
Share-based compensation	861	697
Other, net	(22)	(14)
Changes in assets and liabilities:
Purchase of investments	(398)	(232)
Accounts receivable and accrued revenue	(6,268)	37,103
Propane inventory, storage gas and other inventory	2,180	5,416
Regulatory assets	1,721	(162)
Prepaid expenses and other current assets	2,312	2,084
Accounts payable and other accrued liabilities	8,074	(18,359)
Income taxes receivable	6,599	920
Accrued interest	(316)	(215)
Customer deposits and refunds	(3,958)	(927)
Accrued compensation	(2,060)	(1,853)
Regulatory liabilities	5,588	(2,859)
Other assets and liabilities, net	(12)	(825)
Net cash provided by operating activities	54,063	60,759
Investing Activities
Property, plant and equipment expenditures	(41,220)	(34,386)
Proceeds from sales of assets	45	2,249
Purchase of investments and acquisition	(19,541)	(124)
Environmental expenditures	(209)	(194)
Net cash used in investing activities	(60,925)	(32,455)
Financing Activities
Common stock dividends	(6,356)	(5,987)
Purchase of stock for Dividend Reinvestment Plan	(655)	(619)
Change in cash overdrafts due to outstanding checks	(1,240)	(2,144)
Net borrowing (repayment) under line of credit agreements	15,532	(19,010)
Proceeds from issuance of long-term debt	7,000	0
Repayment of long-term debt	(8,570)	(1,444)
Net cash provided by (used in) financing activities	5,711	(29,204)
Net Decrease in Cash and Cash Equivalents	(1,151)	(900)
Cash and Cash Equivalents-Beginning of Period	3,361	2,637
Cash and Cash Equivalents-End of Period	$ 2,210	$ 1,737