Note 10 - Right-of-use Asset and Leasing Liabilities - Schedule of Items Appearing on the Statement of Operations (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Amortization expense – Finance ROU	$ 16	$ 16	$ 32	$ 33
Lease expense – Operating ROU	83	66	162	132
Interest expense – Finance ROU	$ 1		$ 2	$ 1