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Note 10 - Revenues - Allowance for Doubtful Accounts (Details) - USD ($)
$ in Thousands
9 Months Ended
Sep. 30, 2022
Sep. 30, 2021
Balance, beginning of period $ 136 $ 227
Bad debt expense (credit) 103 (13)
Charge-offs and other (60) (76)
Balance, end of period $ 179 $ 138