Note 6 - Long-term Debt - Long-term Debt Instruments (Details) (Parentheticals) - USD ($) $ in Thousands |
6 Months Ended | 12 Months Ended |
|---|---|---|
Jun. 30, 2017 |
Dec. 31, 2016 |
|
| Revolving Credit [Member] | ||
| Effective interest rate | 4.40% | 4.40% |
| Term Loan [Member] | ||
| Effective interest rate | 4.40% | 4.40% |
| Principal amount | $ 102 | $ 102 |
| X | ||||||||||
- Definition Effective interest rate for the funds borrowed under the debt agreement considering interest compounding and original issue discount or premium. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
- Definition Amount of the required periodic payments applied to principal. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
- Details
|
| X | ||||||||||
- Details
|