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Note 2 - Summary of Significant Accounting Policies - Allowance for Doubtful Accounts (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Balance, beginning of the year $ 1,525 $ 1,914 $ 194
Provision (recovery) for doubtful accounts (499) 57 1,609
Amounts recovered (505) (360)
Amounts written off (33) (6)
Translation adjustments (31) (86) 117
Balance, end of the year $ 962 $ 1,525 $ 1,914