Note 19 - Other Equity Transactions - Shares Issued Recorded In Expense Using Grant-date Fair Value (Details) $ in Thousands	6 Months Ended
	Jun. 30, 2019 USD ($) shares
Shares issued, share-based compensation (in shares) | shares	79,416
Grant date fair value, share-based compensation | $	$ 92
Shares issued, Total (in shares) | shares	79,416
Grant date fair value, Total | $	$ 92
Three Directors [Member] | Issuance of Vested Restricted Common Stock for Director Compensation [Member]
Date of issuance, share-based compensation	January and April 2019
Shares issued, share-based compensation (in shares) | shares	60,579
Grant date fair value, share-based compensation | $	$ 75
Shares issued, Total (in shares) | shares	60,579
Grant date fair value, Total | $	$ 75
Employee [Member] | Issuance of Common Stock for Bonues [Member]
Date of issuance, share-based compensation	May 2019
Shares issued, share-based compensation (in shares) | shares	18,837
Grant date fair value, share-based compensation | $	$ 17
Shares issued, Total (in shares) | shares	18,837
Grant date fair value, Total | $	$ 17