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Note 5 - Leases - Supplemental Cash Flow Information Related to Leases (Details) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Sep. 30, 2019
Sep. 30, 2019
Cash paid for amounts included in the measurements of lease liabilities $ 191 $ 385
Operating lease assets obtained in exchange for operating lease obligations $ 73