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Note 7 - Accounts Receivable - Summary of Accounts Receivable (Details) - USD ($)
$ in Thousands
Sep. 30, 2019
Mar. 31, 2019
Accounts receivable (billed) $ 6,079 $ 5,642
Accounts receivable (unbilled) 3,994 2,213
Accounts receivable, net $ 10,073 $ 7,855