Note 3- Revenue From Contracts With Customers (Details Textual) $ in Thousands	6 Months Ended	12 Months Ended
Dec. 31, 2018 USD ($)	Jun. 30, 2018
Contract with Customer, Asset, Net, Total	$ 0
Contract with Customer, Liability, Total	$ 300
Number of Reportable Segments	2	2
Prepaid Expenses and Other Current Assets [Member]
Contract with Customer, Right to Recover Product, Total	$ 100
Accrued Expenses [Member]
Contract with Customer, Refund Liability, Total	$ 300

Amount, after allowance for credit loss, of right to consideration in exchange for good or service transferred to customer when right is conditioned on something other than passage of time.

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Amount of obligation to transfer good or service to customer for which consideration has been received or is receivable.

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Amount of liability for consideration received or receivable from customer which is not included in transaction price, when consideration is expected to be refunded to customer.

+ References

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Amount of right to recover product from customer on settling refund liability.

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