Long-Term Debt and Convertible Debt (Schedule of Debt) (Details) (USD $)	12 Months Ended
Dec. 31, 2012	Dec. 31, 2011
Debt Instrument [Line Items]
Outstanding Balance	$ 5,601,654	$ 5,950,995
Less: Capital leases	28,285	52,098
Less: Current maturities	146,949	451,674
Long-term debt, Total	5,426,420	5,447,223
Less: Line of credit	3,583,358	2,999,887
Long-term debt, less current maturities	1,843,062	2,447,336
NTR line of Credit [Member]
Debt Instrument [Line Items]
Outstanding Balance	3,583,358
Current Interest Rate	2.00%
Maturity	Aug. 01, 2014
Texas Capital Bank note and line of credit [Member]
Debt Instrument [Line Items]
Outstanding Balance		3,683,214
Current Interest Rate	6.00%
Maturity	Jun. 22, 2012
Mortgage payable [Member]
Debt Instrument [Line Items]
Outstanding Balance	1,957,678	2,064,887
Current Interest Rate	6.70%
Maturity	Aug. 01, 2016
Settlement payable [Member]
Debt Instrument [Line Items]
Outstanding Balance	23,890	136,860
Current Interest Rate	8.00%
Maturity	Feb. 15, 2013
Notes Payable [Member]
Debt Instrument [Line Items]
Outstanding Balance	8,443	13,936
Capital leases [Member]
Debt Instrument [Line Items]
Outstanding Balance	$ 28,285	$ 52,098
Current Interest Rate	17.40%
Maturity	Dec. 31, 2013

Amount equal to the present value (the principal) at the beginning of the lease term of minimum lease payments during the lease term (excluding that portion of the payments representing executory costs such as insurance, maintenance, and taxes to be paid by the lessor, together with any profit thereon) net of payments or other amounts applied to the principal through the balance sheet date.

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-Number 210

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The effective interest rate at the end of the reporting period.

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Date when the debt instrument is scheduled to be fully repaid, in CCYY-MM-DD format.

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Carrying amount of long-term debt, net of unamortized discount or premium, including current and noncurrent amounts. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

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Carrying amount of long-term debt, net of unamortized discount or premium, scheduled to be repaid within one year or the normal operating cycle, if longer. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

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The carrying value as of the balance sheet date of the noncurrent portion of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount. Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the agreement.

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