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Note 5 - Receivables and Allowance for Credit Losses - Summary of Allowance for Doubtful Accounts (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2022
Dec. 31, 2021
Allowance - beginning of period $ 519 $ 484
Provision for expected credit losses 293 179
Amounts written off against the allowance, net of recoveries (40) (144)
Decrease due to sale of Molded Fiber business (39) 0
Allowance - end of period $ 733 $ 519