Condensed Consolidated Balance Sheets (USD $)	Jun. 30, 2013	Dec. 31, 2012
CURRENT ASSETS
Cash and cash equivalents	$ 2,783,341	$ 3,435,117
Marketable securities	354,375	344,346
Accounts receivable
Trade, less allowance for doubtful accounts of $1,408,043 and $1,389,762, respectively	6,910,050	11,933,201
Related parties	110,478	522,557
Unbilled gas	1,637,002	4,612,258
Note receivable - related parties, current portion	1,785	12,615
Inventory
Natural gas and propane	3,620,164	5,092,240
Materials and supplies	2,742,919	1,835,816
Prepaid income taxes	454,883	498,297
Prepayments and other	463,853	2,224,267
Recoverable cost of gas purchases	3,072,480	2,329,524
Deferred tax asset	828,730	828,730
Total current assets	22,980,060	33,668,968
PROPERTY, PLANT, & EQUIPMENT
Property, plant, and equipment	174,527,428	165,662,163
Less accumulated depreciation, depletion and amortization	(49,835,133)	(47,034,673)
PROPERTY, PLANT, & EQUIPMENT, net	124,692,295	118,627,490
OTHER ASSETS
Notes receivable - related parties, less current portion	97,344	122,650
Regulatory assets
Property taxes	166,365	307,732
Income taxes	452,645	452,645
Rate case costs	160,966	176,250
Debt issuance costs, net of amortization	1,593,642	1,798,720
Goodwill	16,516,895	14,891,377
Customer relationships	3,105,083	616,500
Investment in unconsolidated affiliate	352,704	321,731
Restricted cash	2,089,006	3,150,847
Other assets	96,086	328,549
Total other assets	24,630,736	22,167,001
TOTAL ASSETS	172,303,091	174,463,459
CURRENT LIABILITIES
Checks in excess of amounts on deposit	604,232	720,340
Lines of credit	16,200,000	24,260,755
Accounts payable
Trade	7,897,182	9,201,722
Related parties	708,358	51,797
Notes payable, current portion	506,522	633,498
Contingent consideration, current portion	196,000
Accrued liabilities
Taxes other than income	2,118,662	2,548,717
Vacation	147,604	115,956
Employee benefit plans	284,596	145,959
Interest	180,426	191,263
Deferred payments received from levelized billing	1,601,969	2,822,926
Customer deposits	721,068	744,974
Related parties	46,783	595,240
Obligation under capital lease - current	167,518	167,518
Over-recovered gas purchases	1,146,878	1,185,034
Other current liabilities	668,093	729,550
Total current liabilities	33,195,891	44,115,249
LONG-TERM LIABILITIES
Deferred investment tax credits	144,786	155,317
Deferred tax liability	7,829,969	5,144,002
Asset retirement obligation	1,936,498	1,850,379
Customer advances for construction	1,019,632	1,009,232
Regulatory liability for income taxes	83,161	83,161
Regulatory liability for gas costs		20,745
Long-term obligation under capital lease, less current portion	2,040,508	2,040,508
Contingent consideration, less current portion	1,279,000
Total long-term liabilities	14,333,554	10,303,344
NOTES PAYABLE, less current portion	43,448,552	43,700,742
COMMITMENTS AND CONTINGENCIES (see Note 12)
STOCKHOLDERS' EQUITY
Preferred stock; $0.15 par value, 1,500,000 shares authorized, no shares issued or outstanding
Common stock; $0.15 par value, 15,000,000 shares authorized, 8,646,678 and 8,369,752 shares issued and outstanding, respectively	1,297,002	1,255,463
Capital in excess of par value	47,017,268	44,256,493
Accumulated other comprehensive income	71,996	65,789
Retained earnings	32,938,828	30,766,379
Total stockholders' equity	81,325,094	76,344,124
TOTAL CAPITALIZATION	124,773,646	120,044,866
TOTAL LIABILITIES AND CAPITALIZATION	$ 172,303,091	$ 174,463,459