Note 7 - Indebtedness (Details Textual)
|
|
12 Months Ended |
|
Oct. 11, 2012 |
Dec. 31, 2016
USD ($)
|
Dec. 31, 2015
USD ($)
|
Dec. 02, 2013
USD ($)
|
| Long-term Debt |
|
$ 856,000
|
$ 1,870,000
|
|
| Loans Payable [Member] |
|
|
|
|
| Number of Machines Financed |
2
|
|
|
|
| Debt Instrument, Interest Rate, Stated Percentage |
1.83%
|
|
|
|
| Advances on Loan Payable |
|
5,000,000
|
|
|
| Long-term Debt |
|
856,000
|
$ 1,870,000
|
|
| Debt Instrument, Term |
|
|
5 years
|
|
| Revolving Credit Facility [Member] |
|
|
|
|
| Line of Credit Facility, Maximum Borrowing Capacity |
|
|
|
$ 40,000,000
|
| Letters of Credit Outstanding, Amount |
|
400,000
|
|
|
| Long-term Line of Credit |
|
$ 0
|
|
|
| Revolving Credit Facility [Member] | London Interbank Offered Rate (LIBOR) [Member] | Minimum [Member] |
|
|
|
|
| Debt Instrument, Basis Spread on Variable Rate |
|
1.00%
|
|
|
| Revolving Credit Facility [Member] | London Interbank Offered Rate (LIBOR) [Member] | Maximum [Member] |
|
|
|
|
| Debt Instrument, Basis Spread on Variable Rate |
|
1.50%
|
|
|
| Revolving Credit Facility [Member] | Prime Rate [Member] | Minimum [Member] |
|
|
|
|
| Debt Instrument, Basis Spread on Variable Rate |
|
0.00%
|
|
|
| Revolving Credit Facility [Member] | Prime Rate [Member] | Maximum [Member] |
|
|
|
|
| Debt Instrument, Basis Spread on Variable Rate |
|
0.25%
|
|
|