Note 12 - Leases - Maturities of Lease Liabilities (Details) - USD ($) $ in Thousands	Jun. 30, 2019	Jan. 01, 2019
2019, operating leases	$ 362
2019, financing leases	7
2020, operating leases	764
2020, financing leases	15
2021, operating leases	452
2021, financing leases	3
Total operating lease payments	1,578
Total financing lease payments	25
Less: operating lease interest	(107)
Less: financing lease interest	(2)
Total present value of operating lease liabilities	1,471	$ 1,800
Total present value of financing lease liabilities	$ 23