Condensed Consolidated Balance Sheets (USD $) In Thousands, unless otherwise specified	Sep. 30, 2014	Dec. 31, 2013
Property, Plant and Equipment
Regulated energy	$ 730,879	$ 691,522
Unregulated energy	80,500	76,267
Other	21,974	21,002
Total property, plant and equipment	833,353	788,791
Less: Accumulated depreciation and amortization	(192,515)	(174,148)
Plus: Construction work in progress	38,611	16,603
Net property, plant and equipment	679,449	631,246
Current Assets
Cash and cash equivalents	2,285	3,356
Accounts receivable (less allowance for uncollectible accounts of $1,282 and $1,635, respectively)	43,270	75,293
Accrued revenue	7,629	13,910
Propane inventory, at average cost	7,303	10,456
Other inventory, at average cost	2,991	4,880
Storage gas prepayments	4,990	4,318
Prepaid expenses	7,887	6,910
Income taxes receivable	2,100	2,609
Mark-to-market energy assets	187	385
Regulatory assets	7,790	2,436
Deferred income taxes	1,700	1,696
Other current assets	201	160
Total current assets	88,333	126,409
Deferred Charges and Other Assets
Investments, at fair value	3,481	3,098
Regulatory assets	66,241	66,584
Goodwill	4,625	4,354
Other intangible assets, net	2,675	2,975
Receivables and other deferred charges	2,746	2,856
Total deferred charges and other assets	79,768	79,867
Total Assets	847,550	837,522
Stockholders' equity
Common stock, par value $0.4867 per share (authorized 25,000,000 shares)	7,095	4,691
Additional paid-in capital	155,407	152,341
Retained earnings	136,188	124,274
Accumulated other comprehensive loss	(2,469)	(2,533)
Deferred compensation obligation	1,217	1,124
Treasury stock	(1,217)	(1,124)
Total stockholders' equity	296,221	278,773
Long-term debt, net of current maturities	165,044	117,592
Total capitalization	461,265	396,365
Current Liabilities
Current portion of long-term debt	11,113	11,353
Short-term borrowing	71,169	105,666
Accounts payable	33,371	53,482
Accrued compensation	7,269	8,394
Accrued interest	3,347	1,235
Dividends payable	3,936	3,710
Mark-to-market energy liabilities	141	127
Regulatory liabilities	2,797	4,157
Customer deposits and refunds	24,970	26,140
Other accrued liabilities	10,950	7,678
Total current liabilities	169,063	221,942
Deferred Credits and Other Liabilities
Deferred income taxes	142,507	142,597
Deferred investment tax credits	49	74
Regulatory liabilities	3,772	4,402
Accrued asset removal cost-Regulatory liability	39,851	39,510
Environmental liabilities	9,022	9,155
Other pension and benefit costs	18,246	21,000
Other liabilities	3,775	2,477
Total deferred credits and other liabilities	217,222	219,215
Other commitments and contingencies (Note 6)
Total Capitalization and Liabilities	$ 847,550	$ 837,522