Note 11 - Leases - Supplemental Cash Flow Information (Details) - USD ($) $ in Thousands		3 Months Ended	6 Months Ended
		Jun. 30, 2019	Jun. 30, 2019
Operating cash flows from operating leases		$ 562	$ 1,071
Operating leases	[1]	$ 5,736	$ 5,736

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