Note 14 - Leases - Lease Expense (Details) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2019
Operating lease cost	$ 976	$ 3,960
Variable lease cost	228	1,039
Total lease cost	$ 1,204	4,999
Operating cash flows from operating leases		5,020
Lease assets obtained in exchange for new operating lease liabilities		$ 1,921