Note 16 - Supplemental Cash Flow Information - Reconciliation of Cash and Cash Equivalents and Restricted Cash Reported Within the Statement of Financial Position (Details) - USD ($) $ in Thousands	Jun. 30, 2020	Dec. 31, 2019	Jun. 30, 2019	Dec. 31, 2018
Cash and cash equivalents	$ 44,379	$ 26,662	$ 23,920
Restricted cash	1,628		1,631
Total cash, cash equivalents and restricted cash	$ 46,007	$ 28,293	$ 25,551	$ 14,985