Note 11 - Related-party Transactions (Details Textual) - USD ($) |
May 03, 2019 |
Jun. 30, 2019 |
Dec. 31, 2018 |
|---|---|---|---|
| Chief Executive Officer [Member] | Severance Pay [Member] | |||
| Related Party Transaction, Amounts of Transaction | $ 1,091,000 | ||
| Majority Investors [Member] | |||
| Notes Payable, Related Parties | $ 5,500,000 | ||
| Debt Instrument, Face Amount | $ 4,500,000 | ||
| Debt Instrument, Interest Rate, Stated Percentage | 8.00% | ||
| Interest Payable | $ 126,000 |
| X | ||||||||||
- Definition Face (par) amount of debt instrument at time of issuance. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition Contractual interest rate for funds borrowed, under the debt agreement. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition Amount of interest payable on debt, including, but not limited to, trade payables. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition The amount for notes payable (written promise to pay), due to related parties. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition Amount of transactions with related party during the financial reporting period. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Details
|
| X | ||||||||||
- Details
|
| X | ||||||||||
- Details
|