| Schedule of Debt [Table Text Block] |
| | | | | | | | | | | | | | Virginia Real Estate Loan ($6.5 million original principal) payable in monthly installments of $36,426, including interest (at 4.25%), with final payment of $4,858,220 due April 30, 2018 | | $ | 5,271,411 | | | $ | 5,374,777 | | North Carolina Real Estate Loan ($2.24 million original principal) payable in monthly installments of $12,553, including interest (at 4.25%), with final payment of $1,674,217 due April 30, 2018 | | | 1,816,609 | | | | 1,852,230 | | | | | | 7,088,020 | | | | 7,227,007 | | Less current installments | | | 287,937 | | | | 280,999 | | Long-term debt, excluding current installments | | $ | 6,800,083 | | | $ | 6,946,008 | | |