Note 12 - Leases (Details Textual) - USD ($) $ in Thousands	Jan. 01, 2019	Dec. 31, 2019	Dec. 31, 2018
Operating Lease, Right-of-use Assets, Reduction for Amounts Recognized Previously	$ 458
Accounting Standards Update 2016-02 [Member]
Operating Lease, Liability, Total	4,400
Other Liabilities [Member]
Operating Lease, Liability, Total		$ 3,855	$ 459
Other Liabilities [Member] | Office Space Lease [Member]
Operating Lease, Liability, Total		267
Other Liabilities [Member] | Accounting Standards Update 2016-02 [Member]
Operating Lease, Liability, Total	4,400
Other Assets [Member] | Office Space Lease [Member]
Operating Lease, Offsetting Right-of-Use Asset		$ 267
Other Assets [Member] | Accounting Standards Update 2016-02 [Member]
Operating Lease, Offsetting Right-of-Use Asset	$ 4,400