CONSOLIDATED STATEMENTS OF CASH FLOWS (USD $)	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
CASH FLOWS FROM OPERATING ACTIVITIES:
Net income	$ 807,264	$ 1,615,327	$ 1,443,219
Discontinued operation costs	0	0	256,110
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	3,000,275	2,628,174	2,511,488
Stock compensation expense	600,936	335,076	835,736
Provision for doubtful accounts	579,419	627,713	574,688
Provision for (benefit from) deferred income taxes	680,053	1,054,046	727,040
Change in fair value of contingent liabilities	0	(830,000)	0
Changes in assets and liabilities net of effects from acquisitions:
Accounts receivable	(337,845)	(54,067)	(879,900)
Prepaid expenses and other assets	112,796	(40,819)	(133,218)
Deferred charges and other assets	6,951	(9,593)	(1,940)
Accounts payable	(191,698)	(51,927)	228,614
Accrued expenses	(334,217)	(516,530)	657,258
Accrued payroll and related expenses	(12,856)	(213,747)	149,052
Income taxes payable/(receivable)	(557,668)	532,354	(684,478)
Other long-term obligations	42,685	80,145	142,144
Net cash provided by operating activities	4,396,095	5,156,152	5,825,813
CASH FLOWS FROM INVESTING ACTIVITIES:
Notes receivable	33,724	12,001	24,137
Capital expenditures	(4,202,648)	(2,447,755)	(3,440,815)
Net cash used in investing activities	(4,168,924)	(2,435,754)	(3,416,678)
CASH FLOWS FROM FINANCING ACTIVITIES:
Advances - line of credit	21,662,666	17,235,465	19,203,634
Advances - term loan	2,000,000	0	0
Repayments - line of credit	(21,239,691)	(16,731,414)	(19,128,641)
Repayments - term loan	(200,000)	(690,000)	(920,000)
Proceeds from exercise of Common Stock options	0	0	50,120
Purchase and retirement of Common Stock	(621,697)	(479,344)	(676,082)
Tax benefit of Common Stock options exercised	(18,189)	18,816	119,609
Common Stock cash dividends	(1,621,627)	(1,556,251)	(1,431,189)
Net cash used in financing activities	(38,538)	(2,202,728)	(2,782,549)
NET INCREASE (DECREASE) IN CASH AND CASH EQUIVALENTS	188,633	517,670	(373,414)
CASH AND CASH EQUIVALENTS, beginning of year	923,878	406,208	779,622
CASH AND CASH EQUIVALENTS, end of year	1,112,511	923,878	406,208
SUPPLEMENTAL DISCLOSURE OF CASH FLOW INFORMATION:
Cash paid during the year for interest	132,374	119,546	215,331
Cash paid during the year for income taxes	397,759	91,896	854,498
Cash received during the year for income taxes	0	631,640	0
NON-CASH ITEMS:
Gain/(loss) recognized on interest rate swap (net of taxes)	$ 0	$ 5,150	$ 17,002