Long-Term Loans (Narrative) (Details) (USD $)	6 Months Ended
Jun. 30, 2013
Long-Term Loans Narrative Details
Debt Instrument, Issuer	On February 5, 2013, Portables entered into a loan agreement
Debt Instrument, Description	On February 5, 2013, Portables entered into a loan agreement with M&T Bank for a monthly amortizing loan for $2,500,000 with an interest rate of 1-month LIBOR plus 3.50%. The loan matures in four years from date of inception.
Debt Instrument, Face Amount	$ 2,500,000
Debt, Long-term and Short-term, Combined Amount	2,304,276
Short-term Debt	595,348
Long-term Debt	$ 1,708,928

Identification of the lender and information about a contractual promise to repay a short-term or long-term obligation, which includes borrowings under lines of credit, notes payable, commercial paper, bonds payable, debentures, and other contractual obligations for payment. This may include rationale for entering into the arrangement, significant terms of the arrangement, which may include amount, repayment terms, priority, collateral required, debt covenants, borrowing capacity, call features, participation rights, conversion provisions, sinking-fund requirements, voting rights, basis for conversion if convertible and remarketing provisions. The description may be provided for individual debt instruments, rational groupings of debt instruments, or by debt in total.

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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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- Definition

Reflects the total carrying amount as of the balance sheet date of debt having initial terms less than one year or the normal operating cycle, if longer.

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