Note 11 - Leases - Supplemental Cash Flow Information (Details) - USD ($) $ in Thousands		3 Months Ended	9 Months Ended
		Sep. 30, 2019	Sep. 30, 2019
Operating cash flows from operating leases		$ 501	$ 1,553
Operating leases	[1]	$ 5,736	$ 5,736

[1] Amounts for the nine months ended September 30, 2019 include the translation adjustment for the adoption of ASU 2016-02 discussed in Note 10.