Note 8 - Accounts Payable, Accrued Liabilities and Other (Details Textual) - USD ($) |
Jun. 30, 2019 |
Dec. 31, 2018 |
|---|---|---|
| Termination Costs, Bonuses and Director Fees [Member] | Accrued Liabilities and Other [Member] | ||
| Due to Related Parties, Current, Total | $ 309,000 | $ 1,600,000 |
| X | ||||||||||
- Definition Carrying amount as of the balance sheet date of obligations due all related parties. For classified balance sheets, represents the current portion of such liabilities (due within one year or within the normal operating cycle if longer). Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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