Condensed Consolidated Statements of Cash Flows (USD $) In Thousands, unless otherwise specified	9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012
Operating Activities
Net Income	$ 23,104	$ 19,006
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	18,071	17,413
Depreciation and accretion included in other costs	4,504	4,079
Deferred income taxes, net	9,947	12,102
(Gain) loss on sale of assets	(142)	18
Unrealized (gain) loss on commodity contracts	(277)	147
Unrealized gain on investments	217	(401)
Realized gain on sales of investments, net	(702)	(20)
Employee benefits	708	2,268
Share-based compensation	1,246	1,111
Other, net	(84)	(21)
Changes in assets and liabilities:
Purchase of investments	(436)	(292)
Accounts receivable and accrued revenue	(567)	36,523
Propane inventory, storage gas and other inventory	(933)	3,722
Regulatory assets	(1,158)	(456)
Prepaid expenses and other current assets	(1,361)	(856)
Accounts payable and other accrued liabilities	8,174	(20,138)
Income taxes receivable	3,980	(1,010)
Accrued interest	1,144	1,509
Customer deposits and refunds	(2,559)	(1,086)
Accrued compensation	(1,060)	(554)
Regulatory liabilities	4,688	(4,097)
Other assets and liabilities, net	(77)	(4,502)
Net cash provided by operating activities	66,427	64,465
Investing Activities
Property, plant and equipment expenditures	(68,579)	(51,351)
Proceeds from sales of assets	154	2,281
Purchase of investments and acquisition	2,300	0
Payments to Acquire Businesses, Gross	(19,367)	(124)
Environmental expenditures	(276)	(345)
Net cash used in investing activities	(85,768)	(49,539)
Financing Activities
Common stock dividends	(9,716)	(9,160)
Purchase of stock for Dividend Reinvestment Plan	(1,001)	(946)
Change in cash overdrafts due to outstanding checks	(2,692)	(1,559)
Net borrowing (repayment) under line of credit agreements	32,790	(2,393)
Proceeds from issuance of long-term debt	7,000	0
Repayment of long-term debt	(8,609)	(1,459)
Net cash provided by (used in) financing activities	17,772	(15,517)
Net Decrease in Cash and Cash Equivalents	(1,569)	(591)
Cash and Cash Equivalents-Beginning of Period	3,361	2,637
Cash and Cash Equivalents-End of Period	$ 1,792	$ 2,046