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Note 15 - Commitments and Contingencies - Allowance of Doubtful Accounts (Details) - USD ($)
$ in Thousands
9 Months Ended
Sep. 30, 2021
Sep. 30, 2020
Balance at beginning of period $ 473 $ 127
Bad debt expense 0 130
Write-offs (432) (47)
Other adjustments (2) (36)
Balance at end of period $ 39 $ 174