Consolidated Balance Sheets (USD $) In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Property, Plant and Equipment
Regulated energy	$ 691,522	$ 585,429
Unregulated energy	76,267	70,218
Other	21,002	20,067
Total property, plant and equipment	788,791	675,714
Less: Accumulated depreciation and amortization	(174,148)	(155,378)
Plus: Construction work in progress	16,603	21,445
Net property, plant and equipment	631,246	541,781
Current Assets
Cash and cash equivalents	3,356	3,361
Accounts receivable (less allowance for uncollectible accounts of $1,635 and $826, respectively)	75,293	53,787
Accrued revenue	13,910	11,688
Propane inventory, at average cost	10,456	7,612
Other inventory, at average cost	4,880	5,841
Regulatory assets	2,436	2,736
Storage gas prepayments	4,318	3,716
Income taxes receivable	2,609	4,703
Deferred income taxes	1,696	791
Prepaid expenses	6,910	6,020
Mark-to-market energy assets	385	210
Other current assets	160	132
Total current assets	126,409	100,597
Deferred Charges and Other Assets
Goodwill	4,354	4,090
Other intangible assets, net	2,975	2,798
Investments, at fair value	3,098	4,168
Regulatory assets	66,584	77,408
Receivables and other deferred charges	2,856	2,904
Total deferred charges and other assets	79,867	91,368
Total Assets	837,522	733,746
Stockholders’ equity
Common stock, par value $0.4867 per share (authorized 25,000,000)	4,691	4,671
Additional paid-in capital	152,341	150,750
Retained earnings	124,274	106,239
Accumulated other comprehensive loss	(2,533)	(5,062)
Deferred compensation obligation	1,124	982
Treasury stock	(1,124)	(982)
Total stockholders’ equity	278,773	256,598
Long-term debt, net of current maturities	117,592	101,907
Total capitalization	396,365	358,505
Current Liabilities
Current portion of long-term debt	11,353	8,196
Short-term borrowing	105,666	61,199
Accounts payable	53,482	41,992
Customer deposits and refunds	26,140	29,271
Accrued interest	1,235	1,437
Dividends payable	3,710	3,502
Accrued compensation	8,394	7,435
Regulatory liabilities	4,157	1,577
Mark-to-market energy liabilities	127	331
Other accrued liabilities	7,678	7,226
Total current liabilities	221,942	162,166
Deferred Credits and Other Liabilities
Deferred income taxes	142,597	125,205
Deferred investment tax credits	74	113
Regulatory liabilities	4,402	5,454
Environmental liabilities	9,155	9,114
Other pension and benefit costs	21,000	33,535
Accrued asset removal cost—Regulatory liability	39,510	38,096
Other liabilities	2,477	1,558
Total deferred credits and other liabilities	219,215	213,075
Total Capitalization and Liabilities	$ 837,522	$ 733,746