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Note 10 - Revenues - Allowance for Doubtful Accounts (Details) - USD ($)
$ in Thousands
6 Months Ended
Jun. 30, 2022
Jun. 30, 2021
Balance, beginning of period $ 136 $ 227
Bad debt (credit) expense 107 (17)
Charge-offs and other (48) (65)
Balance, end of period $ 195 $ 145