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Note 5 - Accounts Receivable, Net - Summary of Accounts Receivable, Net (Details) - USD ($)
$ in Thousands
Dec. 31, 2019
Dec. 31, 2018
Accounts receivable $ 13,785 $ 9,246
Less allowance for uncollectible accounts receivable (116) (88)
Accounts receivable, net $ 13,669 $ 9,158