CONSOLIDATED STATEMENTS OF CASH FLOWS (USD $)	12 Months Ended
Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
CASH FLOWS FROM OPERATING ACTIVITIES:
Net income/(loss)	$ (923,634)us-gaap_NetIncomeLoss	$ 89,173us-gaap_NetIncomeLoss	$ 807,264us-gaap_NetIncomeLoss
Adjustments to reconcile net income/(loss) to net cash provided by operating activities:
Depreciation and amortization	4,452,272	3,649,138	3,000,275
Stock compensation expense	364,880us-gaap_ShareBasedCompensation	467,028us-gaap_ShareBasedCompensation	600,936us-gaap_ShareBasedCompensation
Provision for doubtful accounts	873,269us-gaap_ProvisionForDoubtfulAccounts	390,218us-gaap_ProvisionForDoubtfulAccounts	579,419us-gaap_ProvisionForDoubtfulAccounts
Provision for (benefit from) deferred income taxes	(421,305)us-gaap_DeferredIncomeTaxExpenseBenefit	(34,433)us-gaap_DeferredIncomeTaxExpenseBenefit	680,053us-gaap_DeferredIncomeTaxExpenseBenefit
Change in fair value of contingent liabilities	0	(196,000)	0
Gain from early extinguishment of debt	0	(22,059)	0
Loss on sale of assets	9,220us-gaap_GainLossOnDispositionOfAssets1	0us-gaap_GainLossOnDispositionOfAssets1	0us-gaap_GainLossOnDispositionOfAssets1
Changes in assets and liabilities, net of effects from acquisitions:
Accounts receivable	(808,086)	(1,026,385)	(337,845)
Prepaid expenses and other assets	(65,029)	27,139	112,796
Deferred charges and other assets	4,808	(7,345)	6,951
Accounts payable	363,922	628,783	(191,698)
Accrued expenses	(85,266)	(803)	(334,217)
Accrued payroll and related expenses	319,458	474,078	(12,856)
Income taxes payable/(receivable)	183,573	265,695	(557,668)
Other long-term obligations	80,674	(363,351)	42,685
Net cash provided by operating activities	4,348,756	4,340,876	4,396,095
CASH FLOWS FROM INVESTING ACTIVITIES:
Notes receivable	26,572	22,022	33,724
Capital expenditures	(4,730,059)	(4,980,584)	(4,202,648)
Proceeds from sale of assets	19,275	0	0
Net cash used in investing activities	(4,684,212)	(4,958,562)	(4,168,924)
CASH FLOWS FROM FINANCING ACTIVITIES:
Advances - line of credit	27,809,707us-gaap_ProceedsFromLinesOfCredit	28,417,653us-gaap_ProceedsFromLinesOfCredit	21,662,666us-gaap_ProceedsFromLinesOfCredit
Advances - term loan	0	2,000,000	2,000,000
Repayments - line of credit	(26,068,044)us-gaap_RepaymentsOfLinesOfCredit	(24,999,905)us-gaap_RepaymentsOfLinesOfCredit	(21,239,691)us-gaap_RepaymentsOfLinesOfCredit
Repayments - term loan	0us-gaap_RepaymentsOfMediumTermNotes	(3,800,000)us-gaap_RepaymentsOfMediumTermNotes	(200,000)us-gaap_RepaymentsOfMediumTermNotes
Proceeds from exercise of Common Stock options	64,500	43,000	0
Purchase and retirement of Common Stock	(6,293)	0	(621,697)
Tax benefit (expense) of Common Stock options exercised	11,211	(59,506)	(18,189)
Common Stock cash dividends	(1,635,223)us-gaap_PaymentsOfDividendsCommonStock	(1,626,240)us-gaap_PaymentsOfDividendsCommonStock	(1,621,627)us-gaap_PaymentsOfDividendsCommonStock
Net cash provided by (used in) financing activities	175,858	(24,998)	(38,538)
NET CHANGE IN CASH AND CASH EQUIVALENTS	(159,598)	(642,684)	188,633
CASH AND CASH EQUIVALENTS, beginning of year	469,827	1,112,511	923,878
CASH AND CASH EQUIVALENTS, end of year	310,229	469,827	1,112,511
SUPPLEMENTAL DISCLOSURE OF CASH FLOW INFORMATION:
Cash paid during the year for interest	133,686us-gaap_InterestPaid	157,204us-gaap_InterestPaid	132,374us-gaap_InterestPaid
Cash paid during the year for income taxes	16,226us-gaap_IncomeTaxesPaid	172,104us-gaap_IncomeTaxesPaid	397,759us-gaap_IncomeTaxesPaid
Cash received during the year for income taxes	$ 192,491us-gaap_ProceedsFromIncomeTaxRefunds	$ 221,900us-gaap_ProceedsFromIncomeTaxRefunds	$ 0us-gaap_ProceedsFromIncomeTaxRefunds

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The cash inflow associated with principal collections from a borrowing supported by a written promise to pay an obligation.

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The amount of cash received during the period as refunds for the overpayment of taxes.

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-Publisher FASB

-Name Accounting Standards Codification

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The cash inflow from a debt funding received on a regular basis with maturities ranging from 5-10 years.

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Amount of cash inflow from contractual arrangement with the lender, including but not limited to, letter of credit, standby letter of credit and revolving credit arrangements.

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The cash inflow associated with the amount received from holders exercising their stock options. This item inherently excludes any excess tax benefit, which the entity may have realized and reported separately.

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Amount of expense related to write-down of receivables to the amount expected to be collected. Includes, but is not limited to, accounts receivable and notes receivable.

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Amount of cash outflow for payment of an obligation from a lender, including but not limited to, letter of credit, standby letter of credit and revolving credit arrangements.

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The cash outflow to pay off borrowing used to receive debt funding on a regular basis with maturities ranging from 5-10 years.

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-Publisher FASB

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The aggregate amount of noncash, equity-based employee remuneration. This may include the value of stock or unit options, amortization of restricted stock or units, and adjustment for officers' compensation. As noncash, this element is an add back when calculating net cash generated by operating activities using the indirect method.

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