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Note 10 - Revenues - Allowance for Doubtful Accounts (Details) - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2022
Mar. 31, 2021
Balance, beginning of period $ 136 $ 227
Bad debt (credit) expense (6) 5
Charge-offs and other 6 22
Balance, end of period $ 136 $ 254