Short-term Loans (Details) (USD $)

6 Months Ended

Jun. 30, 2013

Dec. 31, 2012

Short-term loans

$ 3,608,772

$ 3,519,999

STL Loan 1

Short-term Debt, Lender

M&T Bank

Short-term Debt, Terms

M&T Bank line of credit for up to $3.0 million is collateralized by real property, a certificate of deposit, and guarantees of Portables Unlimited, Inc. (the 49.9% owner of Portables); at 1 month LIBOR plus 3.00%.

Short-term loans

2,488,424

2,994,999

STL Loan 2

Short-term Debt, Lender

SKAVYNIA HOLDINGS LTD 

Short-term loans

525,000

525,000

STL Loan 3

Short-term Debt, Lender

M&T Bank

Short-term Debt, Terms

M&T Bank short term portion of $2.5 million loan at 1-month LIBOR plus 3.50% due in 4 years from February 5, 2013, amortizing monthly.

Short-term loans

$ 595,348

$ 0