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	Sep. 30, 2020	Dec. 31, 2019	Sep. 30, 2019	Dec. 31, 2018
Cash and cash equivalents	$ 32,215	$ 26,662	$ 25,046
Restricted cash	1,628		1,631
Total cash, cash equivalents and restricted cash	$ 33,843	$ 28,293	$ 26,677	$ 14,985