Note 11 - Income Taxes (Details Textual) - USD ($) $ in Thousands	3 Months Ended			12 Months Ended
	Sep. 30, 2019	Jun. 30, 2019	Sep. 30, 2018	Jun. 30, 2019
Additional Tax Rate On Foreign Income	10.50%
Income Tax Expense (Benefit), Total	$ 498		$ 358
Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest, Total	$ 1,276		$ 942
Effective Income Tax Rate Reconciliation, Percent, Total	39.00%		38.00%
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent	21.00%			21.00%
Tax Adjustments, Settlements, and Unusual Provisions		$ 100
Deferred Tax Assets, Valuation Allowance, Total	$ 0
Foreign Tax Authority [Member] | Secretariat of the Federal Revenue Bureau of Brazil [Member]
Effective Income Tax Rate Reconciliation, Foreign Income Tax Rate Differential, Percent				34.00%
Unrecognized Tax Benefits, Ending Balance	$ 100