Note 11 - Income Taxes (Details Textual) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended		12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2019	Dec. 31, 2018	Jun. 30, 2019
Additional Tax Rate On Foreign Income			10.50%
Income Tax Expense (Benefit), Total	$ 615	$ 1,065	$ 1,113	$ 1,423
Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest, Total	$ 1,875	$ 2,991	$ 3,151	$ 3,933
Effective Income Tax Rate Reconciliation, Percent, Total	33.00%	36.00%	35.00%	36.00%
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent					21.00%
Deferred Tax Assets, Valuation Allowance, Total	$ 0		$ 0
Foreign Tax Authority [Member]
Effective Income Tax Rate Reconciliation, Foreign Income Tax Rate Differential, Percent					34.00%
Foreign Tax Authority [Member] | Secretariat of the Federal Revenue Bureau of Brazil [Member]
Unrecognized Tax Benefits, Ending Balance	$ 100		$ 100