Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands		9 Months Ended
		Sep. 30, 2017		Sep. 30, 2016
Operating Activities
Net Income		$ 32,023		$ 32,812
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization		27,267		23,493
Depreciation and accretion included in other costs		5,989		5,357
Deferred income taxes		29,520		12,004
Realized gain on commodity contracts/sale of assets/investments		(2,817)		(405)
Unrealized gain on investments/commodity contracts		(695)		(243)
Employee benefits and compensation		1,212		1,217
Share-based compensation		1,608		1,887
Other, net		(39)		42
Changes in assets and liabilities:
Accounts receivable and accrued revenue		12,912		(3,835)
Propane inventory, storage gas and other inventory		(8,256)		(2,179)
Regulatory assets/liabilities, net		927		(3,326)
Prepaid expenses and other current assets		(2,860)		485
Accounts payable and other accrued liabilities		4,515		7,187
Income taxes (payable) receivable		(3,810)		14,897
Customer deposits and refunds		3,255		(314)
Accrued compensation		(2,030)		(2,293)
Other assets and liabilities, net		(349)		(1,053)
Net cash provided by operating activities		98,372		85,733
Investing Activities
Property, plant and equipment expenditures		(130,137)		(109,589)
Proceeds from sales of assets		601		119
Payments to Acquire Businesses, Gross		(11,707)
Environmental expenditures		(210)		(260)
Net cash used in investing activities		(141,453)		(109,730)
Financing Activities
Common stock dividends		(14,780)		(12,964)
Issuance of stock for Dividend Reinvestment Plan		254		600
Stock issuance		(10)	[1]	57,306
Tax Withholding payments related to net settled stock compensation		(692)		(770)
Change in cash overdrafts due to outstanding checks		(3,013)		2,466
Net repayment under line of credit agreements		(3,760)		(21,379)
Proceeds from issuance of long-term debt		69,800		0
Repayment of long-term debt and capital lease obligation		(5,510)		(2,581)
Net cash provided by financing activities		42,289		22,678
Net Decrease in Cash and Cash Equivalents		(792)		(1,319)
Cash and Cash Equivalents—Beginning of Period		4,178		2,855
Cash and Cash Equivalents—End of Period		3,386		$ 1,536
Additional Paid-in Capital [Member]
Financing Activities
Stock issuance	[1]	$ (10)

[1] On September 22, 2016, we completed a public offering of 960,488 shares of our common stock at a price per share of $62.26. The net proceeds from the sale of common stock, after deducting underwriting commissions and expenses, were approximately $57.4 million.